A polymer compound represented by formula (1) in formula (1), R.sub.1 and R.sub.2 each independently represent a hydrogen atom or a methyl group. In formula (1), m and n are average numbers of repeating units, and each independently represent a real number within the range of 1 to 2000. The polymer compound has sufficient flexibility to be able to form a film, exhibits high adhesion to a low roughness copper foil, and has a low dielectric constant and dielectric loss tangent.

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A (meth)acrylic copolymer (A) having a mass average molecular weight of 50,000 to 1,000,000, in which the (meth)acrylic copolymer (A) is obtained by polymerizing a monomer mixture including a macromonomer (a) that has a number average molecular weight of 500 or more and less than 6000 and a vinyl monomer (b), and preferably includes 7 to 40% by mass of a repeat unit derived from the macromonomer (a), has sufficient coating workability, adhesive holding power and adhesive property as an adhesive composition.

A biodegradable pressure sensitive adhesive comprising a water-dispersed polymer composition and methods of making and using thereof are described herein. The water-dispersed composition comprises or consists of core-shell polymer nano-sized particles, wherein the core comprises or consists of one or more alkyds and the shell comprises or consists of a (meth)acrylate polymer. The one or more alkyd core comprises one or more fatty acids and/or fatty acid esters derived from a non-drying oil.

Disclosed is a method comprising: a) dispersing a first monomer mixture comprising least one least monomer, the first monomer mixture having a total glass transition temperature (Tg) in the range of from −10° C. to −65° C. with a surfactant and an initiator in an aqueous medium; b) when the first monomer mixture is completely dispersed, adding a second monomer mixture comprising at least one monomer, the second monomer mixture having a Tg at least 20° C. greater than the Tg of the first monomer mixture, to the aqueous medium; c) when the second monomer mixture is completely dispersed, adding a third monomer mixture comprising at least one monomer, the third monomer mixture having a Tg in the range of from −25° C. to 50° C.; and d) forming a polymer with the first, second, and third monomer mixtures. Also disclosed is a pressure sensitive adhesive comprising the polymer formed by this method.

Disclosed is a method comprising: a) dispersing a first monomer mixture comprising least one least monomer, the first monomer mixture having a total glass transition temperature (Tg) in the range of from −10° C. to −65° C. with a surfactant and an initiator in an aqueous medium; b) when the first monomer mixture is completely dispersed, adding a second monomer mixture comprising at least one monomer, the second monomer mixture having a Tg at least 20° C. greater than the Tg of the first monomer mixture, to the aqueous medium; c) when the second monomer mixture is completely dispersed, adding a third monomer mixture comprising at least one monomer, the third monomer mixture having a Tg in the range of from −25° C. to 50° C.; and d) forming a polymer with the first, second, and third monomer mixtures. Also disclosed is a pressure sensitive adhesive comprising the polymer formed by this method.

There is provided a (meth)acrylic copolymer with which a pressure-sensitive adhesive layer exhibiting excellent low temperature coatability and exhibiting holding power and excellent base material contamination resistance even in a case of being irradiated with a low dose of UV irradiation can be formed. The (meth)acrylic copolymer of the present invention comprises a constituent unit a derived from a macromonomer and a constituent unit b derived from a monomer represented by Formula (b), where a content of the constituent unit b is 0.01% to 25% by mass with respect to a total mass of the (meth)acrylic copolymer. In Formula (b), R.sup.A and R.sup.B each independently represent an alkyl group, a carboxy group, or a halogen atom, n represents an integer of 0 to 5, m represents an integer of 0 to 4, and X represents a (meth)acryloyloxy group or a (meth)acryloyloxyalkyleneoxy group.

The invention relates to a curable adhesive comprising, based on the mass of the curable adhesive: a) one or more (meth)acrylate block copolymers of the structure A-B-A in a combined mass fraction of 25% or more, where the A blocks independently of one another stand for a poly(meth)acrylate having a glass transition temperature Tg of 50° C. or more which is preparable by polymerization of an A monomer composition composed of A monomers, where the B block stands for a poly(meth)acrylate having a glass transition temperature Tg of less than 50° C. which is preparable by polymerization of a B monomer composition composed of B monomers, b) one or more polymerizable first epoxide compounds E1 in a combined mass fraction of 5% or more, where the first epoxide compound E1 at 25° C. is a solid or a high-viscosity substance, and c) one or more polymerizable second epoxide compounds E2 in a combined mass fraction of 5% or more, where the second epoxide compound E2 at 25° C. is a liquid, where the amount-of-substance-weighted polar component of the Hansen solubility parameters <δ.sub.p> of the monomer units derived from A monomers in the A blocks, <δ.sub.p>(A), is in the range from 9.0 to 11.0 MPa.sup.0.5, and where the amount-of-substance-weighted polar component of the Hansen solubility parameters <δ.sub.p> of the monomer units derived from B monomers in the B blocks, <δ.sub.p>(B) is less than 9 MPa.sup.0.5.

Articles that include at least one application layer; at least one bead bond layer (10); a layer of optical elements (20) that are partially embedded in the at least one bead bond layer (10); and at least one reflective layer (30) that is located functionally between the layer of optical elements (20) and the bead bond layer (10), wherein the at least one bead bond layer (10), the at least one application layer, or both comprise a cured product of an adhesive compositions that include polymerized units of one or more (meth)acrylate ester monomers derived from an alcohol containing 1 to 14 carbon atoms; at least one of urethane acrylate polymer or at least one acrylic copolymer; and at least one initiator.

Provided is a composition for a non-aqueous secondary battery adhesive layer containing organic particles, a thixotropic agent, and water. The organic particles have a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. The composition for a non-aqueous secondary battery adhesive layer has a viscosity η.sub.0 at a shear rate of 100 s.sup.−1 of less than 10 mPa.Math.s, a viscosity η.sub.1 at a shear rate of 10,000 s.sup.−1 of not less than 0.5 mPa.Math.s and not more than 2.4 mPa.Math.s, and a ratio (η.sub.0/η.sub.1) of the viscosity η.sub.0 relative to the viscosity η.sub.1 of not less than 1.2 and not more than 10.

The present application is a composition including abase resin comprising between about 4% and about 15% acrylic acid monomer and an oligomer additive comprising (a) one of an acrylamide or meth(acrylamide) copolymer and (b) a high glass transition temperature monomer. The oligomer additive has a molecular weight range of between about 20,000 and about 1,000,000 and a glass transition temperature of between about 70° C. and about 115° C. The composition has a blending ratio of base resin to oligomer additive of between about 7 to about 30 parts per hundred of resin.