This page is updated frequently with new Acid Anhydride-related patent applications.
|Process for the production of carboxylic esters and use of these as plasticizers|
The invention relates to a method for producing carboxylic acid esters by reacting carboxylic acids and/or carboxylic acid anhydrides with at least one alcohol having at least 5 carbon atoms, selected from alkanols and cycloalkanols, in the presence of an ionic liquid and an acidic esterification catalyst. The invention also relates to the use of the thus obtained carboxylic acid esters as a plasticizer or in a plasticizer composition for thermoplastic polymers and elastomers..
|Electrolyte and magnesium secondary battery|
To provide an electrolyte and a magnesium secondary battery that can embody a magnesium secondary battery having room-temperature operability and satisfactory cyclability. An electrolyte 13 including an organic solvent, magnesium salt and cyclic acid anhydride is provided.
|Fiber-reinforced resin composite body, and reinforced matrix resin for fiber-reinforced resin|
The present invention provides a fiber-reinforced resin composite as a fiber-reinforced resin composite (e) including a fiber-reinforced resin (c), which contains a reinforcing fiber (a) and a matrix resin (b), and a reinforcing material (d), in which the reinforcing material (d) contains a cellulose nanofiber (f), and the cellulose nanofiber (f) is obtained by micronizing cellulose in a fibrillated resin (g), and provides a reinforced matrix resin for the fiber-reinforced resin. The present invention also provides a fiber-reinforced resin composite in which the cellulose nanofiber (f) is a modified cellulose nanofiber (f1) that is obtained by micronizing cellulose in the fibrillated resin (g) and then reacting the cellulose with a cyclic polybasic acid anhydride (j)..
|Nonaqueous electrolyte compositions|
Electrolyte compositions containing a solvent, a co-solvent, certain cyclic carboxylic acid anhydride additives, certain phosphorus-containing additives, and an electrolyte salt are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide significantly improved cycle life with no loss of discharge capacity..
E I Du Pont De Nemours And Company
|Method for producing optically active carboxylic acid ester|
Provided is a method for producing an optically active carboxylic acid ester at a high yield and with high enantioselectivity using dynamic kinetic resolution, said optically active carboxylic acid ester having an α-nitrogen substituent. This method for producing an optically active carboxylic acid ester includes a step in which racemic carboxylic acid represented by formula (a) and a specific alcohol or phenol derivative are reacted in a polar solvent having a dipole moment of at least 3.5 in the presence of an acid anhydride and an asymmetric catalyst, one enantiomer of the racemic carboxylic acid is selectively esterified, and the other enantiomer is racemized.
Tokyo University Of Science Foundation
|Cleaning solution, cleaning facility and cleaning mount substrate|
A method of cleaning a mount substrate comprising the step of: preparing a cleaning solution and cleaning the mount substrate by using the cleaning solution. The cleaning solution is a chemical solution produced by providing organic amine as a content in a hydrocarbon-based solvent containing a ketone or an aromatic and by adding unsaturated carboxylic acid anhydride or carboxylic anhydride to this solvent..
Mitsubishi Electric Corporation
|Method for producing carboxylic acid anhydride, producing carboxylic imide, and manufacturing electrophotographic photosensitive member|
A method for producing a carboxylic acid anhydride includes heating a composition containing a specific compound in a solvent to yield the carboxylic acid anhydride. The solvent is an aprotic polar solvent having a boiling point of 50° c.
Canon Kabushiki Kaisha
|Positive photosensitive resin composition, cured film formed by curing same, and optical device equipped with same|
A positive photosensitive resin composition including: a polysiloxane synthesised by hydrolysing and partially condensing a specific organosilane and an organosilane that has a carboxyl group and/or a dicarboxylic acid anhydride structure; particles of one or more metal compounds selected from an aluminium compound, a tin compound, a titanium compound, and a zirconium compound, or composite particles of a silicon compound and one or more metal compounds selected from an aluminium compound, a tin compound, a titanium compound, and a zirconium compound; a naphthoquinone diazide compound; and a solvent.. .
Toray Industries, Inc.
|Method for producing oxymethylene copolymer|
The present invention provides a method for producing an oxymethylene copolymer which involves polymerizing trioxane and a comonomer cationically at a polymerization temperature of 135° c. To 300° c.
Mitsubishi Gas Chemical Company, Inc.
|Resin composition, prepreg and laminate board|
A resin composition contains a preliminary reaction product obtained through mixing an epoxy resin and a monofunctional acid anhydride as a first curing agent in an equivalence ratio of the epoxy resin to the monofunctional acid anhydride in a range of 1:0.1 to 1:0.6, and reacting the epoxy resin and the monofunctional acid anhydride such that a percentage of ring opening of the monofunctional acid anhydride is 80% or more, and a second curing agent being a different compound from the monofunctional acid anhydride.. .
Panasonic Intellectual Property Management Co., Ltd.
Ionomer resin composition, optical film, polarizing plate, and liquid crystal display apparatus
[solution] an ionomer resin composition according to the present invention is an ionomer resin composition obtained by reacting an acrylic thermoplastic resin (x) including a chain alkyl (meth)acrylate unit (a), an n-substituted maleimide unit (b), and an unsaturated acid and/or unsaturated acid anhydride unit (c) with a metal compound (y), in which the acrylic thermoplastic resin (x) includes the chain alkyl (meth)acrylate unit (a), the n-substituted maleimide unit (b), and the unsaturated acid and/or unsaturated acid anhydride unit (c) in a total amount of 80% by mass or more, and contents of the structural units (a), (b), and (c) with respect to 100 parts by mass in total of the acrylic thermoplastic resin (x) except for the unsaturated acid and/or unsaturated acid anhydride unit (c) are from 65 to 87 parts by mass, from 1 to 30 parts by mass, and from 0.1 to 5 parts by mass, respectively.. .
Electrolytic capacitor and manufacturing same
An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, and a solid electrolyte layer covering at least a portion of the dielectric layer. The solid electrolyte layer includes a first conductive polymer layer covering at least a portion of the dielectric layer, and a second conductive polymer layer covering at least a portion of the first conductive polymer layer.
Panasonic Intellectual Property Management Co., Ltd.
Polymer resin composition, polymer composite tape, and front bumper of automobile
Disclosed are a polymer resin composition comprising: a binder resin including an olefin-based polymer resin; a carbon fiber surface-treated with a predetermined compound; and a modified polyolefin resin grafted with polyetheramine-bonded dicarboxylic acid or an acid anhydride thereof, a polymer composite tape including the polymer resin composition, and a front bumper of a vehicle equipped with the polymer composite tape.. .
Hyundai Motor Company
Pneumatic tire and run-flat tire
Provided is a pneumatic tire including a sidewall that has a good balance of excellent handling stability, rolling resistance, and durability and further has excellent flex crack growth resistance. The sidewall is formed from a modified cellulose fiber-containing rubber composition that is allowed to simultaneously achieve excellent rigidity, excellent tensile properties, and low energy loss by improving the dispersibility of the cellulose fiber in rubber.
Sumitomo Rubber Industries, Ltd.
Rubber composition, rubber composition for tires, and pneumatic tire
Provided are a modified cellulose fiber-containing rubber composition and rubber composition for tires that are allowed to simultaneously achieve excellent rigidity, excellent tensile properties, and low energy loss by improving the dispersibility of the cellulose fiber in rubber, as well as a pneumatic tire formed from the rubber composition, having excellent handling stability, excellent rolling resistance properties, and excellent durability. The present invention relates to a modified cellulose fiber-containing rubber composition containing: a modified cellulose fiber (a) obtained by adding a c15 or higher cyclic polybasic acid anhydride (a) containing a hydrophobic group to a cellulose fiber through esterification; a dispersing polymer (b) having a softening point of 135° c.
Sumitomo Rubber Industries, Ltd.
Blends of polyamide and acid anhydride-modified polyolefins for use in golf balls
Multi-layered golf balls having at least one layer made of polyamide/acid anhydride-modified polyolefin blended compositions are provided. Preferably, a transparent polyamide is used.
Copolymer for improving methacrylic resin heat resistance
A copolymer for improving heat resistance of a methacrylic resin which can achieve preservation of excellent transparency of the methacrylic resin and improvement in heat resistance, and can provide a molded product having excellent appearance, by adding the copolymer to the methacrylic resin, is provided. According to the present invention, a copolymer for improving heat resistance of a methacrylic resin, including: 45 to 85 mass % of an aromatic vinyl monomer unit; 5 to 45 mass % of a (meth)acrylic acid ester monomer unit; and 10 to 20 mass % of an unsaturated dicarboxylic acid anhydride monomer unit; wherein the copolymer has a total light transmittance of 88% or more, the total light transmittance being measured in accordance with astm d1003 for a sample with 2 mm-thickness, is provided..
Denka Company Limited
Current collector, electrode structure, electrical storage device, and composition for current collectors
A current collector having high safety, the current collector being capable of stably maintaining the ptc function even when the temperature further increases after realizing the ptc function when used for the electrode structure of electrical storage devices such as non-aqueous electrolyte batteries, electrical double layer capacitors, and lithium ion capacitors; electrode structures; electrical storage devices; and composition for current collectors, is provided. A current collector 100 including a conductive substrate 103 and a resin layer 105 provided onto at least one side of the conductive substrate 103, is provided.
Furukawa Electric Co., Ltd.
Silane vulcanized thermoplastic elastomers
The present invention relates to novel polymer compositions, particularly in the form of thermoplastic vulcanisates, said compositions comprising the reaction product of a first polymer (rubber phase); a second polymer (thermoplastic phase); a carboxylic acid anhydride; either a vinylsilane in combination with a peroxide or a sulphursilane; and whereby said silane is allowed to react with the polymers first. The invention further provides for processes of manufacturing such compositions and for articles comprising such compositions..
Falcone Specialties Ag
Cross-linkable silicone composition
Silicone elastomers exhibiting non-transitory biofilm inhibiting properties are prepared from crosslinkable components which include an organopolysiloxane bearing at least one silicon-bonded hydrogen and/or at least one alkenyl group, and at least one carboxylic acid, carboxylic acid ester, or carboxylic acid anhydride group, which becomes covalently bonded to the polymer before or during curing.. .
Wacker Chemie Ag
Liquid epoxy resin composition for semiconductor sealing and resin-sealed semiconductor device
The present invention relates to a liquid epoxy resin composition for semiconductor sealing, which contains: (a) a liquid epoxy resin that does not contain a siloxane bond in each molecule; (b) an acid anhydride-based curing agent; (c) a surface-treated spherical inorganic filler which is a spherical inorganic filler having an average particle diameter of 0.1-10 μm as determined by a laser diffraction method and serving as an inorganic filler, and wherein the surface of the spherical inorganic filler is surface-treated with 0.5-2.0 parts by weight of a (meth)acrylic functional silane coupling agent per 100 parts by weight of the spherical inorganic filler of the component (c); and (d) a curing accelerator. The present invention is able to provide a semiconductor device which has excellent heat resistance and moisture resistance..
Shin-etsu Chemical Co., Ltd.
Organic salts of glyceride-cyclic carboxylic acid anhydride adducts as corrosion inhibitors
A corrosion-inhibiting composition includes a diluent and a mixture of organic salts of half ester-half acids of a dioic acid with of a glyceride group with a fatty acyl residue. Included are organic salts of glyceride-cyclic carboxylic acid anhydride adducts..
The Lubrizol Corporation
Biobased highly functional oligomers and thermosets therefrom
The invention relates to a polyfunctional bio-based oligomer which is the reaction product of a) at least one epoxidized sucrose fatty acid ester resin; b) at least one ethylenically unsaturated acid selected from methacrylic acid, acrylic acid, crotonic acid, and mixtures thereof; c) at least one acid anhydride selected from acetic acid anhydride, acrylic acid anhydride, methacrylic acid anhydride, crotonic acid anhydride, and mixtures thereof; d) optionally, at least one catalyst; and e) optionally, at least one inhibitor. In a polyfunctional bio-based oligomer of the invention, the ratio of ethylenically unsaturated acid to acid anhydride ranges from 90:1 to 1:90; at least one epoxide group of the at least one epoxidized sucrose fatty acid ester resin is esterified by at least one ethylenically unsaturated acid; and at least one epoxide group of the at least one epoxidized sucrose fatty acid ester resin is esterified by at least one acid anhydride.
Ndsu Research Foundation
Dielectric fluid compositions for enhanced thermal management
A dielectric fluid composition for electrical apparatus comprises a functionalized 12-hydroxy stearic acid having desirable properties including a pour point less than −30° c. And a fire point greater than 250° c.
Dow Global Technologies Llc
Process for synthesis of lactams
Methods for the synthesis of lactams are presented whereby a carboxylic acid of the formula hooc—or—nh-lg, wherein or is an organic moiety and lg is a leaving group, is reacted with an acid, such as an organic acid, in particular a strong acid, and a dehydrating agent, which may be one in the same such as a strong acid anhydride, such that the amount of acid added allows for the desired transformation to take place without the loss of the leaving group (lg) before the cyclization, and recovering the lactam such as that of the formula (a), provided herein, wherein g represents the atom(s) needed to form a closed ring.. .
Compositions containing transparent polyamides for use in making golf balls
Multi-layered golf balls having at least one layer made of a polyamide composition containing a transparent polyamide polymer are provided. The transparent polyamide may be blended with other transparent or non-transparent polyamides.
Coating layer, coating solution, forming coating layer, and producing medical tool
Provided is a coating layer including a reaction product of a diisocyanate compound (a) selected from the group consisting of aromatic diisocyanates, aliphatic diisocyanates, and alicyclic diisocyanates, a polyol (b), and a copolymer (c) having a functional group selected from the group consisting of carboxylic acid groups, carboxylic acid ester groups, and carboxylic acid anhydride groups. The coating layer exhibits sufficient lubricity in wet conditions and has excellent durability..
Tab lead for secondary battery, and nonaqueous electrolyte secondary battery using the same
Provided is a tab lead for a secondary battery including tab lead metal that has an adhesion interface with sealing resin. The adhesion interface is provided with a surface treatment film formed of a material including a polymer with carboxylic acid anhydride groups.
Automotive Energy Supply Corporation
Polarizing plate and image display apparatus comprising same
The present invention relates to a polarizing plate including: a polarizer; and a protective layer formed on at least one surface of the polarizer, in which the protective layer is a cured product of a radical curable composition including: (a) an acid anhydride-based compound having at least one unsaturated double bond between carbons; (b) a vinyl-based compound having at least one electron donor group; (c) a radical initiator; and (d) a cation generator, and an image display device including the same.. .
Lg Chem, Ltd.
Polarizing plate protective film, polarizing plate, image display device, and manufacturing polarizing plate protective film
There is provided a polarizing plate protective film including a substrate and a hard coat layer, wherein the hard coat layer is a layer formed by curing a photocurable composition containing a polyfunctional (meth)acrylate compound and an acid anhydride, and a content of the acid anhydride in the photocurable composition is 8% by mass or more based on a total solid content of the photocurable composition.. .
Radical curable adhesive composition, and polarizing plate and optical member comprising same
And in equation (1), m is the number of carbon-carbon unsaturated double bonds capable of participating in polymerization in the molecule including an acid anhydride group included in the acid anhydride-based compound; and n is the number of carbon-carbon unsaturated double bonds capable of participating in polymerization in the molecule included in the vinyl-based compound.. .
Marine engine lubrication
A trunk piston marine engine lubricant comprises in respective minor amounts (a) an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent system, and (b) a hydrocarbyl-substituted succinic acid anhydride made by halogen- or radical-assisted functionalization processes, where the ratio of succinic anhydride to hydrocarbyl chains is in the range of 1.4 to 4. The lubricant, when used to lubricate such an engine fuelled by heavy fuel oil, exhibits improved control of asphaltene precipitation and deposition on engine surfaces..
Infineum International Limited
Self-healing epoxy resin composition
A self-healing hydrophobic epoxy resin composition is provided. The self-healing epoxy resin composition comprises an epoxy resin component and a hardener component, the hardener component comprises at least 0.1 weight % of a modified epoxy resin hardener.
Aditya Birla Chemicals (thailand) Ltd.
Process for preparing substituted isatoic acid anhydride compounds and derivatives thereof
The present invention relates also to the compounds of formula (ii) and to processes comprising further preceding and/or subsequent reaction steps, leading to anthranilamide pesticides or to precursors for them.. .
Lithium ion secondary battery
The present invention provides a lithium ion secondary battery comprising: a positive electrode; a negative electrode comprising a negative electrode active material comprising at least one carbon material selected from the group consisting of a natural graphite, an artificial graphite, a non-graphitizable carbon and a graphitizable carbon; and an electrolyte solution comprising a specific cyclic disulfonate ester compound and an acid anhydride.. .
Electrolytic solution and secondary battery
It is an object of the present invention to provide an electrolytic solution capable of suppressing gas generation. The present exemplary embodiment is an electrolytic solution comprising a supporting salt, a nonaqueous solvent that dissolves the supporting salt, a cyclic sulfonic acid ester compound represented by predetermined formula (1), and an acid anhydride.
Liquid primer composition and laminate using it
To provide a liquid primer composition excellent in adhesion properties and a laminate using the same. The liquid primer composition comprises a powder (x) made of a reactive ethylene/tetrafluoroethylene copolymer containing repeating units (a) based on tetrafluoroethylene, repeating units (b) based on ethylene, and repeating units (c) based on a monomer having an acid anhydride residue and a polymerizable unsaturated bond, in a content ratio of (c)/((a)+(b)) being from 1/10,000 to 5/100 by molar ratio; a powder (y) made of an epoxy resin; and water (z); wherein the content of the powder (y) made of an epoxy resin is from 1 to 30 parts by mass per 100 parts by mass of the powder (x) made of a reactive ethylene/tetrafluoroethylene copolymer..
Asahi Glass Company, Limited
Powder primer composition and laminate using it
To provide a powder primer composition excellent in adhesion properties and a laminate obtained by using it. The power primer composition comprises a powder made of a reactive ethylene/tetrafluoroethylene copolymer containing repeating units (a) based on tetrafluoroethylene, repeating units (b) based on ethylene, and repeating units (c) based on a monomer having an acid anhydride residue and a polymerizable unsaturated bond, wherein (c)/((a)+(b)) is from 1/10,000 to 5/100 by molar ratio; and a powder made of an epoxy resin having an epoxy equivalent of from 500 to 2,700 and a softening point of at least 70° c.; wherein the mass ratio of the powder made of a reactive ethylene/tetrafluoroethylene copolymer to the powder made of an epoxy resin is from 99/1 to 80/20..
Asahi Glass Company, Limited
A process for recovering an esterified cellulose ether from a reaction product mixture
A process for recovering an esterified cellulose ether from a reaction product mixture obtained from a reaction of (a) a cellulose ether with (b) an aliphatic monocarboxylic acid anhydride or a di- or tricarboxylic acid anhydride or a combination of an aliphatic monocarboxylic acid anhydride and a di- or tricarboxylic acid anhydride, comprises the steps of (i) contacting the reaction product mixture with an aqueous liquid to precipitate the esterified cellulose ether from the reaction product mixture, (ii) isolating the precipitated esterified cellulose ether from the mixture obtained in step (i), and (iii) suspending the isolated esterified cellulose ether in an aqueous liquid to provide a suspension having a temperature of at least 28° c., and (iv) recovering the esterified cellulose ether from the suspension of step (iii).. .
Dow Global Technologies Llc
Enzyme triggered release of bioactive agents by live cells
The present invention relates to modified polymer surfaces capable of releasing bioactive agents and a method for preventing cell growth on a surface. Thus, one aspect of the invention relates to a medical device comprising a device substrate having a surface, a polymer coating attached to said surface, and a bioactive agent covalently attached to said polymer coating, and wherein said bioactive agent is covalently attached to said polymer coating via at least one ester or carboxylic acid anhydride moiety sensitive to cleavage by an enzyme.
Aldehyde free thermoset bioresins and biocomposites
Aldehyde-free bio-based resin and composite materials include flexible or rigid thermoset resins of epoxidized oils derived from unsaturated oils which are cured with crosslinking carboxylic acids, natural food acids, anhydrides and acid anhydrides, and may be combined with different lignocellulosic fibers, forestry products or waste, with up to 100% renewable content.. .
The Governors Of The University Of Alberta
The present invention is a multi-layer tube comprising at least two layers having an (a) layer containing an aliphatic polyamide composition (a) and a (b) layer containing a semi-aromatic polyamide composition (b) containing a specific semi-aromatic polyamide (b1), wherein the aliphatic polyamide composition (a) contains a specific amount of an aliphatic polyamide (a1) and a specific amount of an elastomer polymer (a2) containing an unsaturated compound having a carboxyl group and/or acid anhydride group, and the product of the terminal amino group concentration [x] of the aliphatic polyamide (a1) per g of the aliphatic polyamide composition (a) and the total concentration [y] of the carboxyl group and acid anhydride group of the elastomer polymer (a2) per g of the aliphatic polyamide composition (a) is a specific amount.. .
Ube Industries, Ltd.
Method for manufacturing water-insoluble molded article and water-insoluble molded article
A process for producing a water-insoluble shaped material, including a step of treating a raw material shaped material containing a water-soluble salt of a polyanionic polysaccharide with a treatment liquid containing an acid anhydride to insolubilize the raw material shaped material in water, and the process makes it possible to simply produce a water-insoluble shaped material in which intrinsic characteristics of the polyanionic polysaccharide being a raw material are retained, which has a high safety in that a chemical crosslinking agent is not required, and which is useful as a medical material, a food material, a cosmetic material, and the like.. .
Dainichiseika Color & Chemicals Mfg. Co., Ltd.
Light-emitting device, anisotropic conductive paste, and manufacturing light-emitting device
In order to provide a light emitting device having high connection reliability, the light-emitting device includes a board provided with a wiring pattern, an anisotropic conductive paste arranged on an board electrode of the wiring pattern, and a light-emitting element embedded in the anisotropic conductive paste, and at least one of the board electrode and the element electrode is plated with an ausn alloy layer. The anisotropic conductive paste contains an epoxy compound, an acid anhydride, white inorganic particles, and conductive particles obtained by coating resin particles with an au coating layer.
Method for producing cellulose derivative, and cellulose derivative
A method for producing a cellulose derivative, including reacting a mixed acid anhydride having two particular types of acyl groups with cellulose in the presence of a base catalyst in an organic solvent having an electron pair-donating property to form a cellulose derivative with the two types of acyl groups derived from the mixed acid anhydride, the acyl groups being introduced at hydroxy groups in the cellulose.. .
Sealing resin, semiconductor device, and photocoupler
A semiconductor device includes: a sealing resin and a semiconductor element. The sealing resin includes a base resin and a curing agent.
Kabushiki Kaisha Toshiba
Underfill material and manufacturing semiconductor device using the same
An underfill material achieving a wide margin for mounting and a method for manufacturing a semiconductor device using the same are provided. The underfill material contains an epoxy resin, an acid anhydride, an acrylic resin, and an organic peroxide, wherein a minimum melt viscosity attainment temperature and a minimum melt viscosity obtained when melt viscosity of the underfill material is measured under a temperature increase rate condition in a range of 5 to 50° c./min are in a range of 100° c.
Marine engine lubrication
A trunk piston marine engine lubricant comprises in respective minor amounts (a) an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent system, and (b) a hydrocarbyl-subsituted succinic acid anhydride, preferably made by halogen- or radical-assisted fractionalization processes, where the ratio of succinic anhydride to hydrocarbyl chains is in the range of 1.4 to 4. The lubricant, when used to lubricate such an engine fuelled by heavy fuel oil, exhibits improved control of asphaltene precipitation and deposition on engine surfaces..
Infineum International Limited
Epoxy resin-based composition as a filler honeycomb cells
Curable compositions are provided comprising (i) at least one epoxy resin as specified (ii) an epoxide hardener system comprising (a) a carboxylic acid anhydride, (b) a first amine having a melting point from about 30 c to about 100 c and containing at least one primary amine group; and (c) a second amine having a melting point of from about 50 c to about 180 c and having at least one primary amine group, wherein the first and second amines are selected such that they have a difference in melting points of at least 10 c and wherein the first and second amines are contained in minor amounts by weight as compared to the carboxylic acid anhydride; and (iii) a filler as specified. Also provided are compositions obtainable by curing the curable composition, the use of the curable composition for filling of voids in honeycomb structures and processes for filing voids in honeycomb structures..
3m Innovative Properties Company
Process for producing powder coating material, coated article and process for its production, and producing carboxy group-containing fluororesin
To provide a process for producing a powder coating material capable of forming a cured film which is excellent in weather resistance and which has few voids (gaps); a coated article having such a cured film; and a method for producing a carboxy group-containing fluororesin less susceptible to gelation. A process for producing a powder coating material containing a powder (x) composed of a composition (a) comprising a fluororesin (a) having carboxy groups, or alkoxysilyl groups and urethane bonds, and a curing agent (d), said process comprising (a) a step of melt-kneading a mixture comprising a hydroxy group-containing fluororesin (b), an acid anhydride (c1) or a compound (c2) having an alkoxysilyl group and an isocyanate group, and the curing agent (d), to obtain a kneaded product composed of the composition (α), and (b) a step of pulverizing the kneaded product to obtain the powder (x)..
Asahi Glass Company, Limited
Process for producing cellulose-nanofiber-filled microporous stretched polyolefin film, microporous cellulose-nanofiber composite film, and separator for non-aqueous secondary battery
A method for producing a cellulose nanofiber-containing polyolefin microporous stretched film according to the invention includes: a first step of obtaining a cellulose powder dispersion mixture by uniformly dispersing a cellulose which has a powder particle shape and whose hydroxyl groups have been subjected to a lipophilizing treatment using a dibasic acid anhydride, in a plasticizer; a second step of melt-kneading the cellulose powder dispersion mixture and a polyolefin to obtain a polyolefin resin composition; a third step of extrusion-molding the polyolefin resin composition to obtain an extrudate; a fourth step of stretching the extrudate with a film stretcher to obtain a film; a fifth step of extracting out the plasticizer from the film; and a sixth step of thermally fixing the film from which the plasticizer has been extracted out for inhibiting contraction, while stretching the film at a temperature not higher than a melting point of the polyolefin, in which a twin-screw kneading extruder is used only once throughout the second and third steps.. .
The Japan Steel Works, Ltd.