Acrylic syrup polymer composition are provided by partially polymerizing a (meth)acrylic monomer mixture in the presence of a thiol chain transfer agent to produce a first syrup polymer composition comprising a low molecular weight solute (meth)acrylic copolymer and solvent monomers, quenching the chain transfer agent, further polymerizing the first syrup polymer composition to produce a second syrup polymer composition comprising the low molecular weight solute acrylic copolymer, a high molecular weight solute acrylic copolymer and optionally unreacted solvent monomers, optionally adding a crosslinker and photoinitiator; and further photopolymerizing the syrup polymer composition to produce a pressure-sensitive adhesive.

A pressure-sensitive adhesive is provided that is a dried product of a latex composition, which is formed from an emulsion composition. The latex composition and the emulsion composition are also provided. The emulsion composition has droplets that contain various monomers plus a (meth)acrylate polymer dissolved in the monomers. Additionally, an article containing a layer of the pressure-sensitive adhesive and a method of forming the pressure-sensitive adhesive are provided. The pressure-sensitive adhesives often have both high peel adhesion and high shear strength (i.e., high cohesive strength or high shear holding power).

A pressure-sensitive adhesive is provided that is a dried product of a latex composition, which is formed from an emulsion composition. The latex composition and the emulsion composition are also provided. The emulsion composition has droplets that contain various monomers plus a (meth)acrylate polymer dissolved in the monomers. Additionally, an article containing a layer of the pressure-sensitive adhesive and a method of forming the pressure-sensitive adhesive are provided. The pressure-sensitive adhesives often have both high peel adhesion and high shear strength (i.e., high cohesive strength or high shear holding power).

Multilayer product comprising at least one layer of an acrylate-based foam carrier (S); and a multiphase polymer composition (P) applied to this layer; the multiphase polymer composition (P) comprising: a comb copolymer (A) which is obtainable by polymerization of at least one (meth)acrylate monomer in the presence of at least one macromer selected from the group consisting of polymerizable ethylene-butylene, ethylene-propylene, ethylene-butylene-propylene and isobutylene macromers, and which forms a continuous acrylate phase and a discontinuous hydrocarbon phase Kw; and at least one hydrocarbon component (B) which is soluble in the hydrocarbon phase Kw of the comb copolymer (A) and comprises at least one plasticizer resin and at least one solid resin;
the multiphase polymer composition (P) having a continuous acrylate phase with a static glass transition temperature Tg(Ac), measured by the DSC method, and a discontinuous hydrocarbon phase Kw1, comprising the hydrocarbon component (B) and having a static glass transition temperature Tg(Kw1), measured by the DSC method, where Tg(Kw1) is higher than Tg(Ac) by 35 to 60 kelvins.

Multilayer product comprising at least one layer of an acrylate-based foam carrier (S); and a multiphase polymer composition (P) applied to this layer; the multiphase polymer composition (P) comprising: a comb copolymer (A) which is obtainable by polymerization of at least one (meth)acrylate monomer in the presence of at least one macromer selected from the group consisting of polymerizable ethylene-butylene, ethylene-propylene, ethylene-butylene-propylene and isobutylene macromers, and which forms a continuous acrylate phase and a discontinuous hydrocarbon phase Kw; and at least one hydrocarbon component (B) which is soluble in the hydrocarbon phase Kw of the comb copolymer (A) and comprises at least one plasticizer resin and at least one solid resin;
the multiphase polymer composition (P) having a continuous acrylate phase with a static glass transition temperature Tg(Ac), measured by the DSC method, and a discontinuous hydrocarbon phase Kw1, comprising the hydrocarbon component (B) and having a static glass transition temperature Tg(Kw1), measured by the DSC method, where Tg(Kw1) is higher than Tg(Ac) by 35 to 60 kelvins.

Provided are a modified polyvinyl alcohol-based resin with an acrylic group introduced thereto and including a hydroxyl group formed during the introduction of the acrylic group, an adhesive including the modified polyvinyl alcohol-based resin having excellent adhesion, humidity resistance, and water resistance, an adhesive including a polyvinyl alcohol-based resin, and a compound having an epoxy group, and an acrylic group, a polarizing plate and an image display device including the adhesive. The adhesive for a polarizing plate according to an embodiment of the present invention has excellent adhesion, humidity resistance, and water resistance as well as having excellent solubility with respect to water and an increase in adhesion while physical properties of a typical polyvinyl alcohol-based resin are maintained.

A (meth)acrylic acid copolymer (A) having a weight average molecular weight of 1000 to 1,000,000, and in which when the half-width of the primary scatter peak when measured by small angle X-ray scattering is defined as X, 0.12<X, is used as an adhesive. The (meth)acrylic copolymer (A) is obtained by polymerizing a monomer mixture containing a macromonomer (a) having a number average molecular weight of 500-100,000, and a vinyl monomer (b). The adhesive has sufficient holding force and adhesive force, and the occurrence of adhesive deposit can be prevented when peeled off.

Adhesive compositions are described which can be selectively detackified or deadened. Articles using such adhesive compositions are also described. Also described are techniques in which select regions of adhesive layers in the articles are detackified. Also described are systems and methods using the various articles and adhesive compositions. And particular label constructions are described.

Described are aqueous polymer dispersions for composite film lamination, comprising a dispersed polymer and a dissolved polymer, and also a multistage process for preparing them from ethylenically unsaturated, radically polymerizable monomers. In a first stage, a first polymer is prepared by radical emulsion polymerization. In a second stage, an aqueous polymer dispersion is prepared in the presence of the first polymer. The monomers of the first stage comprise monomers with acid groups. The dissolved polymer comprises monomers having oxazoline groups, and also water-soluble monomers. The aqueous polymer dispersions can be used as adhesive for producing composite films.

Adhesive compositions are described which can be selectively detackified or deadened. Articles using such adhesive compositions are also described. Also described are techniques in which select regions of adhesive layers in the articles are detackified. Also described are systems and methods using the various articles and adhesive compositions. And particular label constructions are described.