The present application discloses an adhesive composition comprising a polymer of the formulae A, B and C and methods for using the adhesive composition.

The present application discloses an adhesive composition comprising a polymer of the formulae A, B and C and methods for using the adhesive composition.

An adhesive article is described comprising a foamed adhesive layer and a non-foamed adhesive layer. The adhesive of each adhesive layer comprises a tetrahydrofurfuryl (meth)acrylate copolymer; an epoxy resin; a polyether polyol; and optionally a hydroxy-functional film-forming polymer. The adhesive may be used in structural and semi-structural bonding applications and is designed to fail cohesively.

Described are aqueous polymer dispersions for composite film lamination and 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 further 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 monomers of the further stage comprise monomers having oxazoline groups. The polymerization of the first stage takes place at a low pH of less than 5. The acid groups of the first polymer are neutralized before the polymerization of the further stage. The aqueous polymer dispersions can be used as adhesives for producing composite films.

Described are aqueous polymer dispersions for composite film lamination and 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 further 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 monomers of the further stage comprise monomers having oxazoline groups. The polymerization of the first stage takes place at a low pH of less than 5. The acid groups of the first polymer are neutralized before the polymerization of the further stage. The aqueous polymer dispersions can be used as adhesives for producing composite films.

An object of the present invention is to provide an acrylic adhesive having excellent high-temperature adhesive strength and excellent cured product elongation. Accordingly, provided is a two-part acrylic adhesive composition including, as essential components, (A) a urethane (meth)acrylate having a backbone including a low-crystallinity polytetramethylene glycol, (B) a polymerizable vinyl monomer, (C) an organic peroxide, and (D) a reducing agent.

An object of the present invention is to provide an acrylic adhesive having excellent high-temperature adhesive strength and excellent cured product elongation. Accordingly, provided is a two-part acrylic adhesive composition including, as essential components, (A) a urethane (meth)acrylate having a backbone including a low-crystallinity polytetramethylene glycol, (B) a polymerizable vinyl monomer, (C) an organic peroxide, and (D) a reducing agent.

A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both surfaces of a polarizer, and transparent protective films. The adhesive layer (a) on/over one of both the surfaces has a glass transition temperature of 60 C. or higher and lower than 40 C. The adhesive layer (b) on/over the other surface has a glass transition temperature of 40 C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises, as radical polymerizable compounds, a component A having a logPow of 2 to 2, and a component B having a logPow more than 7, these logPow values being each an octanol/water distribution coefficient.

A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both surfaces of a polarizer, and transparent protective films. The adhesive layer (a) on/over one of both the surfaces has a glass transition temperature of 60 C. or higher and lower than 40 C. The adhesive layer (b) on/over the other surface has a glass transition temperature of 40 C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises, as radical polymerizable compounds, a component A having a logPow of 2 to 2, and a component B having a logPow more than 7, these logPow values being each an octanol/water distribution coefficient.

Provided is a curable compound having a low melting temperature, having excellent workability as a result of having good solvent solubility, and being capable of forming a cured product having excellent heat resistance. The curable compound according to an embodiment of the present invention includes the following characteristics (a) to (e). (a) Number average molecular weight (calibrated with polystyrene standard): 1000 to 15000. (b) Proportion of a structure derived from an aromatic ring in the total amount of the curable compound: 50 wt. % or greater. (c) Solvent solubility at 25? C.: 1 g/100 g or greater. (d) Glass transition temperature: 280? C. or lower. (e) 5% Weight loss temperature (T.sub.d5) measured at a rate of temperature increase of 10? C./min (in nitrogen), for a cured product of the curable compound: 300? C. or higher.