31 results about "Methacrylic Acid Polymers" patented technology

To provide a pressure-sensitive adhesive tape which suppresses the surface contamination of an adherend with foreign matter and is excellent in antistatic performance.SOLUTION: An adhesive tape according to an embodiment of the present invention includes a base material; and an adhesive layer formed of an active energy ray-curable adhesive containing a (meth) acrylic polymer having a radiation-polymerizable carbon-carbon double bond, an ionic liquid, and a photopolymerization initiator.SELECTED DRAWING: Figure 1

Provided is a release coating agent for a polyester base material, which has excellent adhesion to the polyester base material and has heat peeling resistance. A release coating agent for a polyester substrate according to an embodiment includes an aqueous dispersion in which a polyurethane resin is dispersed in an aqueous dispersion medium. The aqueous dispersion contains a (meth) acrylic polymer that contains, as constituent components, a monofunctional alkyl (meth) acrylate having an alkyl group having 4-22 carbon atoms and a poly (meth) acrylate having 2-6 functional groups.

The present disclosure provides aqueous dispersions of hydroxyl-functional core-shell particles. The particle core comprises a (meth) acrylic polymer and the shell comprises a polyurethane polymer. And the mass ratio of the core to the shell ranges from 20: 80 to 80: 20. The shell has a hydroxyl number of from 1 mg KOH / g to 40 mg KOH / g and an acid number of from 10 mg KOH / g to 60 mg KOH / g. The polyurethane is prepared from (a) a first prepolymer having a polymerizable ethylenically unsaturated group at one end and an active hydrogen functional group at the opposite end; (b) a second prepolymer having a polymerizable ethylenically unsaturated group at each end thereof; and (c) a third prepolymer having an active hydrogen functional group at each end thereof. Also provided are aqueous curable film-forming compositions, multi-layer coated substrates, and methods of improving adhesion and / or cohesion between coatings on a substrate.

The present invention provides an adhesive composition capable of forming an adhesive layer or the like having excellent high-temperature properties. The adhesive composition of the present invention comprises a (meth)acrylic polymer (A), a rosin-based tackifying resin (B) having a glass transition temperature of 85°C or higher, a hydroxyl value of more than 45 mgKOH / g, and an acid value of 5 to 20 mgKOH / g, and a crosslinking agent (C).

The invention provides a polymer microsphere composite material, a diaphragm, a battery and electric equipment. The polymer microsphere composite material comprises a polymer microsphere and a shell arranged on the surface of the polymer microsphere, the shell comprises nanocellulose, and the polymer microsphere comprises polyolefin grafted with a modified polymer; the modified polymer comprises at least one of an acrylate polymer, an acrylamide polymer, an acrylonitrile polymer, a methacrylic acid polymer, a styrene polymer and a maleic anhydride polymer. The polymer microsphere composite material is used for a diaphragm coating, can provide good wettability, and solves the problem that the binding power is reduced due to swelling of a traditional adhesive layer in an electrolyte.

To provide a curable composition that yields a cured product with excellent water vapor barrier properties, and a cured product of the curable composition. [Solution] A liquid polybutadiene compound (C) and a metal soap (D) are added to a curable composition containing a polyoxyalkylene polymer (A) having reactive silicon groups, a (meth)acrylic polymer (B) having reactive silicon groups, and a curing catalyst (E).

An object of the present invention is to provide a removable pressure-sensitive adhesive composition which is excellent in wettability and reduces the pressure-sensitive adhesive force at the time of low-speed and high-speed peeling.SOLUTION: A (meth) acryl-based polymer (A) containing 85 to 98.5% by mass of an alkyl group-containing unsaturated monomer (a1) having an alkyl group having 1 to 18 carbon atoms and 1.5 to 15% by mass of a polymerizable monomer (a2) having a functional group, wherein the alkyl group-containing unsaturated monomer (a1) having an alkyl group having 1 to 18 carbon atoms contains at least n-octyl acrylate, and the (meth) acryl-based polymer (A) has an acid number of 7. 5mgKOH / g or less.SELECTED DRAWING: None

To provide a curable composition that is less prone to gelation when stored at high temperatures, has a moderately low viscosity, and yields a cured product with excellent tensile strength, and a cured product of the curable composition. [Solution] In a curable composition comprising a polyoxyalkylene polymer (A) having reactive silicon groups, a (meth)acrylic polymer (B) having reactive silicon groups, and a curing catalyst (D), the (meth)acrylic polymer (B) is a (meth)acrylic polymer having constituent units derived from an epoxy group-containing (meth)acrylic acid ester, and the curable composition contains a polyfunctional thiol (C).

The present invention relates to an antifouling coating composition comprising: (i) a (meth)acrylic silyl ester copolymer containing at least 15% by weight of silyl ester monomers relative to the total weight of monomers in the (meth)acrylic silyl ester copolymer; and / or (ii) a (meth)acrylic polymer containing 10% by weight or less of silyl ester monomers and 5.0% by weight or less of metal ester monomers relative to the total weight of monomers in the (meth)acrylic polymer; (iii) a monocarboxylic acid or a metal salt thereof; and (iv) a biocide comprising a. tralopyryl and b. one or more copper compounds having a copper content of at least 40% by weight relative to the formula weight of the copper compound, wherein the biocide content in the entire coating composition is 10.0% by weight or less; and (v) a total of at least 35% by weight of pigments, fillers, and biocides relative to the total weight of the entire coating composition.

The reverse iodine transfer polymerization of an ethylenically unsaturated monomer comprising (meth)acrylic acid, a salt thereof, or a combination thereof, in the presence of a radical polymerization initiator, an oxidant, an iodide salt, and a solvent, is a useful method for manufacturing (meth)acrylic acid polymers. The amounts of components used can range from 5 to 500 equivalents of the ethylenically unsaturated monomer comprising (meth)acrylic acid, a salt thereof, or a combination thereof, in the presence of 1 to 3 equivalents of the radical polymerization initiator, 0.2 to 1 equivalent of the oxidant, and 1 equivalent of the iodide salt. (Meth)acrylic acid polymer solutions are prepared by these methods. (Meth)acrylic polymers are useful as dispersants.

The present invention relates to a multi-layer metallized paper-based packaging material comprising, from its outer side to its inner side: (i) a paper layer; (ii) at least one organic barrier layer comprising a polymer selected from polyvinylalcohol (PVOH), ethylene vinyl alcohol (EVOH), butenediol vinyl alcohol co-polymer (BVOH), or a combination thereof; (iii) at least one inorganic barrier layer comprising metals, metalloids, or a combination thereof; (iv) at least one organic heat seal layer comprising an acrylic or methacrylic acid polymer grafted with at least one type of ionomer; and (v) a top coat layer comprising at least one polyolefin.

The present invention provides an antifouling coating composition comprising (i) a silyl (meth) acrylate copolymer comprising at least 15 wt% of silyl ester monomers relative to the total weight of monomers in the silyl (meth) acrylate copolymer, and / or (ii) a (meth) acrylic polymer comprising at least 15 wt% of silyl ester monomers relative to the total weight of monomers in the silyl (meth) acrylate copolymer, a (meth) acrylic polymer comprising 10 wt% or less of a silyl ester monomer and 5.0 wt% or less of a metal ester monomer with respect to the total weight of monomers in the (meth) acrylic polymer; (iii) a monocarboxylic acid or a metal salt thereof; (iv) a biocide comprising: a. A bromopyrrole nitrile; and b. One or more copper compounds having a copper content of at least 40 wt% relative to the formula amount of the copper compound wherein the coating composition comprises, as a whole, 10.0 wt% or less of a biocide; and (v) at least 35 wt%, relative to the total weight of the coating composition as a whole, of a combined pigment, extender and biocide.

A composition comprising a multistage polymer and a (meth) acrylic polymer is provided.SOLUTION: In particular the present invention relates to a composition comprising a multistage polymer in the form of polymer particles made by a multistage process and a (meth) acrylic polymer wherein the (meth) acrylic polymer has an intermediate molecular weight. More particularly, the present invention relates to a polymer composition comprising polymer particles made by a multistage process comprising at least two stages and a (meth) acrylic polymer of intermediate molecular weight, to a process for its preparation, to its use as impact modifier in a polymer composition for composites comprising a thermoset or thermoplastic polymer and the composition and to articles comprising it.SELECTED DRAWING: None

To provide a curable composition that is less prone to stringing during application, provides a cured product with low modulus and high elongation, and a cured product of the curable composition. [Solution] In a curable composition comprising a polyoxyalkylene polymer (A) having reactive silicon groups, a (meth)acrylic polymer (B) having reactive silicon groups, and a curing catalyst (D), the (meth)acrylic polymer (B) is a (meth)acrylic resin having constituent units derived from an epoxy group-containing (meth)acrylic acid ester, and the curable composition contains a polyfunctional amine (C).

The present invention provides an adhesive sheet which is used for bonding adherends having different expansion and contraction rates, and which is less susceptible to peeling from the adherends even in an environment in which a temperature change occurs or in a high-temperature environment. The pressure-sensitive adhesive sheet according to the present invention is used for bonding a pair of adherends having different expansion and contraction rates to each other, and is provided with a pressure-sensitive adhesive layer obtained from a pressure-sensitive adhesive composition containing at least a silane coupling agent and a main agent containing a (meth) acrylic polymer, and the gel rate of the pressure-sensitive adhesive layer is 80% or more. The residual stress of the adhesive layer after 60 seconds after 15% torsional shear stress is applied at 105 DEG C is 3.0 kPa or more and 10.0 kPa or less.

This invention provides a pattern formation method that uses a (meth)acrylic polymer, which can be used for ArF patterning, as the main framework, and obtains a narrow-pitch fine pattern by dry development without silylation. [Solution] A pattern formation method comprising: forming a multilayer on a substrate to be processed; forming a resist upper layer film using an ArF excimer positive-type chemical amplification resist composition; removing acid-unstable groups from the exposed portion of the resist upper layer film by exposure and post-exposure baking; performing a hard bake at a higher temperature and shorter time than the post-exposure bake to volatilize the removed acid-unstable groups outside the resist upper layer film, creating a difference in the number of carbon atoms between the unexposed and exposed portions; removing the resist upper layer film from the exposed portion by dry development using an oxygen-containing gas plasma to separate the pattern; and etching the pattern of the resist upper layer film onto the lower multilayer.

The present invention relates to a composition comprising a multistage polymer and a (meth)acrylic polymer in form of a porous polymer powder, its process of preparation and its use. The present invention also relates to a composition in form of a porous polymer powder comprising a multistage polymer in form of polymeric particles made by a multistage process and a (meth)acrylic polymer, while the (meth)acrylic polymer possesses a medium molecular weight. The present invention further relates to polymer composition in form of a porous polymer powder comprising polymeric particles made by a multistage process comprising at least two stages and a (meth)acrylic polymer, its process of preparation, its use and compositions and articles comprising it.

To provide a curable optical adhesive composition in which the cured product exhibits excellent hardness and elongation with superior temperature stability, enabling the precise maintenance of the position of in-vehicle optical components under the operating temperature and motion conditions of an automobile. [Solution] A curable optical adhesive composition comprising a curable optical resin composition containing a (meth)acryloyloxy group-containing (meth)acrylic polymer (A), a high glass transition temperature vinyl monomer (B), a rigid filler (C), and a polymerization initiator (D), wherein the cured product of the curable optical resin composition is an optical resin having a glass transition temperature of 125°C or higher and an elongation of 3% or higher at room temperature.

Provided is a decorative film excellent in performance such as solvent resistance, elongation, and followability without using a fluororesin for a surface layer. The decorative film includes a cover layer and a colored layer. The cover layer contains a cured product of a (meth)acrylic polyol and hexamethylene diisocyanate. The colored layer contains a (meth)acrylic polymer having a glass transition temperature of lower than about 0°C, a (meth)acrylic polymer having a glass transition temperature of about 0°C or higher, and a colorant.

To provide an adhesive composition capable of forming an adhesive layer or the like that exhibits high adhesiveness to low-polarity adherends and also has excellent heat resistance, and an adhesive sheet using the same. The adhesive composition of the present invention comprises a (meth)acrylic polymer (A) that is a polymer comprising 51 to 99.9 mass% of a (meth)acrylic acid alkoxyalkyl ester and 0.1 to 15 mass% of a monomer component (a) containing a crosslinkable functional group-containing monomer, 10 to 50 mass parts of a tackifying resin (B) per 100 mass parts of the (meth)acrylic polymer (A).

The present invention pertains to an adhesive agent composition comprising a (meth)acrylic monomer and a (meth)acrylic polymer. The (meth)acrylic monomer includes an alkyl(meth)acrylate having a branched alkyl group. The alkyl(meth)acrylate having a branched alkyl group includes a branched alkyl group-containing alkyl(meth)acrylate that has a glass transition temperature of -55°C to -15°C when formed into a homopolymer. The (meth)acrylic polymer has a structural unit derived from an alkyl(meth)acrylate. The adhesive agent composition contains an organic solvent and the content proportion of solvents in the adhesive agent composition is 10 mass% or less, or the adhesive agent composition does not contain an organic solvent.

To provide an adhesive composition excellent in reworkability, transparency and impact resistance, an adhesive sheet, an optical member and a display device.SOLUTION: A (meth) acryl-based polymer (A) having a reactive functional group, a (meth) acryl-based polymer (B) having a glass transition temperature higher than a glass transition temperature of the (meth) acryl-based polymer (A) by 85 °C or more, and a crosslinking agent, in which when a pressure-sensitive adhesive layer is formed, a half-value width H °C of a peak of a loss tangent of the pressure-sensitive adhesive layer, a content CA parts by mass of the (meth) acryl-based polymer (A), and a content CB parts by mass of the (meth) acryl-based polymer (B) satisfy a relationship of the following Expression (X), and applications thereof. 14.8 ≤ H * CA / (CA + CB) <21.0 (X) SELECTED DRAWING: None

An article containing a paper substrate, a first coating layer, and a second coating layer; where the first coating layer resides between the paper substrate and the second coating layer and contains, by weight based on the weight of the first coating layer, (1a) from 50%to 80%of a high-density polyethylene having a density in a range of 0.930 to 0.980 g / cm3, and (1b) from 20%to 50%of an ethylene- (meth) acrylic acid copolymer; wherein the ethylene- (meth) acrylic acid copolymer has a degree of neutralization in a range of greater than 5%to 75%, and wherein the ethylene- (meth) acrylic acid copolymer comprises ethylene units, (meth) acrylic acid units, and units of a (meth) acrylic acid salt at a mole-to-mole ratio of ethylene units to units of (meth) acrylic acid and the (meth) acrylic acid salt in a range of 95: 5 to 90: 10; where the second coating layer comprises, by weight based on the weight of the second coating layer, (2a) from 25%to 100%of an ethylene-vinyl alcohol copolymer having a saponification degree of 80 mol%or more, and (2b) from 0 to 75%of a (meth) acrylic acid polymer; where the (meth) acrylic acid polymer has a degree of neutralization of from 5%to 50%, and where the (meth) acrylic acid polymer comprises from 50%to 100%of structural units of (meth) acrylic acid and a salt of (meth) acrylic acid, by weight based on the weight of the (meth) acrylic acid polymer. A process for preparing the article contains the steps: (i) applying a first coating composition to a paper substrate, (ii) drying the applied first coating composition to form the first coating layer, (iii) applying a second coating composition to the first coating layer, and (iv) drying the applied second coating composition to form the second coating layer; thereby obtaining the article. A paper packaging contains the article.

To provide a conductive ink composition having good thin line printability and surface smoothness after printing, and capable of forming a conductive film which is stretchable and excellent in conductivity after stretching.SOLUTION: A (meth) acrylic polymer (A) and silver particles (B), wherein the (meth) acrylic polymer (A) includes a first (meth) acrylic polymer (a- 1) and a second (meth) acrylic polymer (a- 2), the first (meth) acrylic polymer (a- 1) has a glass transition temperature of 0 °C or lower and a weight average molecular weight of 500,000 or more, the second (meth) acrylic polymer (a- 2) has a glass transition temperature of 0 °C or lower and a weight average molecular weight of less than 500,000, and the surface of the silver particles (B) is coated with a fatty acid containing oleic acid.SELECTED DRAWING: None

In one or several examples, this photocurable adhesive sheet is provided with one or more adhesive layers formed from an adhesive composition containing a (meth)acrylic polymer (A), a polyfunctional (meth)acrylate (B), and a cleavage-type photopolymerization initiator (C). At least one of the adhesive layers contains a polymer (B') of the polyfunctional (meth)acrylate (B) and a decomposition product (C') of the cleavage-type photopolymerization initiator (C). The total content of a polyfunctional (meth)acrylate (B1) having a mass average molecular weight of 300 or less in the total amount of the adhesive composition forming the one or more adhesive layers is less than 3 mass% of the total content of the (meth)acrylic polymer (A) in the total amount of the adhesive composition forming the one or more adhesive layers, and the gel fraction is 15% or less.

To provide a decorative film that offers excellent performance in solvent resistance, elongation, and conformability without using fluororesin in the surface layer. [Solution] A decorative film according to one embodiment of the present disclosure comprises a cover layer and a coloring layer, the cover layer comprising a cured product of (meth)acrylic polyol and hexamethylene diisocyanate, and the coloring layer comprising a (meth)acrylic polymer having a glass transition temperature of less than about 0°C, a (meth)acrylic polymer having a glass transition temperature of about 0°C or higher, and a colorant.

An article comprising a paper substrate, a first coating layer, and a second coating layer; where the first coating layer resides between the paper substrate and the second coating layer and comprises, by weight based on the weight of the first coating layer, (1a) from 50%to 80%of a high-density polyethylene having a density in a range of 0.930 to 0.980 g / cm3; and (1b) from 20%to 50%of an ethylene- (meth) acrylic acid copolymer; where the ethylene-(meth) acrylic acid copolymer has a degree of neutralization in a range of greater than 5%to 75%, and where the ethylene- (meth) acrylic acid copolymer comprises ethylene units, (meth) acrylic acid units, and units of a (meth) acrylic acid salt at a mole-to-mole ratio of ethylene units to units of (meth) acrylic acid and the (meth) acrylic acid salt in a range of 95: 5 to 90: 10; where the second coating layer comprises: (2a) an ethylene-vinyl alcohol copolymer having a saponification degree of 80 mol%or more; (2b) a (meth) acrylic acid polymer comprising 50%to 100%of structural units of (meth) acrylic acid, by weight based on the weight of the (meth) acrylic acid polymer; where the (meth) acrylic acid polymer is present in an amount such that the weight ratio of the (meth) acrylic acid polymer to the ethylene-vinyl alcohol copolymer in a range of 10: 90 to 45: 55; and (2c) from 1%to 50%of an inorganic pigment, by weight based on the weight of the second coating layer.

To provide a radical-curable sealing member that can suppress the deterioration of mechanical properties under high temperature and high humidity conditions. [Solution] A radical-curable sealing member comprising a crosslinked body of a radical-curable composition containing the following components (A) to (D), wherein the total content (A+B+C) of the following components (A) to (C) is a monofunctional (meth)acrylic monomer (a) having an alkyl group having 6 to 9 carbon atoms in component (A). A (a) The total content of the constituent units derived from (a) and the content of component (B) A The content ratio of +B) ([a A A radical-curable sealing member having 80% by mass or more of (A) monofunctional (meth)acrylic monomer (a) having alkyl groups with 6 to 9 carbon atoms. A (B) A (meth)acrylic polymer whose main constituent unit is derived from ) (C) Monofunctional (meth)acrylic monomer having alkyl groups with 6 to 9 carbon atoms (D) Polyfunctional (meth)acrylic monomer.

To provide a method by which an alkali-neutralized product of a carboxyl group-containing polymer having a molecular weight of ≤ 40000 can efficiently be obtained and the range of the molecular weight can be adjusted.SOLUTION: In the method for producing an alkali-neutralized product of a low-molecular-weight carboxyl group-containing polymer according to the present disclosure, an alkali-neutralized product of at least one carboxyl group-containing polymer selected from the group consisting of (I) a copolymer of an α - olefin or a vinyl compound and maleic anhydride, (II) a copolymer of a vinyl compound and (meth) acrylic acid, and (III) a (meth) acrylic acid polymer is used as a starting material, and a cleavage agent is allowed to act on the starting material to cleave the starting material, thereby producing an alkali-neutralized product of a carboxyl group-containing polymer having a molecular weight of 40000 or less. Thereafter, the produced alkali-neutralized product of the carboxyl group-containing polymer is powdered.SELECTED DRAWING: None

An object of the present invention is to provide a methacrylate-containing composition having high quality stability during storage. The methacrylate-containing composition according to one example comprises methacrylic acid, a compound (component A1) represented by Formula (11), and a polymerization inhibitor (component B), in which the concentration of the methacrylic acid is 98.00% to 99.99% by mass. R1a, R2a, R3a, R4a, R5a, and R6a: a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, a hydroxy group, an alkoxy group, an amino group, a monovalent group including a carbonyl group, an alkylthio group, or an arylthio group. Two or more of R1a, R2a, R3a, R4a, and R5a: groups other than a hydrogen atom. R7a: a hydrogen atom, an alkenyl group, an aryl group, a hydroxy group, an alkoxy group, an amino group, a monovalent group including a carbonyl group, an alkylthio group, or an arylthio group.