Abstract A process for producing an aqueous copolymer dispersion is disclosed, which comprises emulsion polymerizing 100 parts by weight of a vinyl monomer mixture comprising (A) from 60 to 99.8% by weight of an acrylic ester of an aliphatic saturated alcohol having from 4 to 8 carbon atoms, (B) from 0.2 to 10% by weight of a monomer selected from the group consisting of an α,β-unsaturated carboxylic acid, an α,β-unsaturated carboxylic acid anhydride, a 2-hydroxyalkyl acrylate, a 2-hydroxyalkyl methacrylate, acrylamide, methacrylamide, methylolacrylamide, and methylolmethacrylamide, and (C) up to 30% by weight of a vinyl monomer other than the monomers (A) and (B) in the presence of from 0.01 to 10 parts by weight of a compound having an allyl hydrogen atom, with a total amount of the monomers (A), (B) and (C) being 100% by weight. The resulting aqueous copolymer dispersion can form a film which exhibits excellent adhesion performance particularly to an adherend having small polarity and gives off no smell.
A process for producing an aqueous copolymer dispersion, wherein the polymer has a glass transition point ranging from -10° C. to -90° C., which consists of: emulsion polymerizing, in an aqueous medium containing a polymerization initiator, 100 parts by weight of a vinyl monomer mixture consisting of (A) from 60% to 99.8% by weight of 2-ethylhexyl acrylate, (B) from 0.2 to 10% by weight of an α,β-unsaturated carboxylic acid, and (C) up to 30% by weight of a vinyl monomer other than monomers (A) and (B) in the presence of an emulsifying agent and from 0.01 to 10 parts by weight of a compound having an allyl hydrogen atom selected from the group consisting of abietic acid and derivatives thereof having the formula: ##STR4## wherein R is hydrogen or alkyl and the encircled H groups represent allyl hydrogen atoms, and allyl alcohol.
Claim 2
Dependent Claim
142 words
A process for producing an aqueous copolymer dispersion, wherein the polymer has a glass transition point ranging from -10° C. to -90° C., which consists of: emulsion polymerizing, in an aqueous medium containing a polymerization initiator, 100 parts by weight of a vinyl monomer mixture consisting of (A) from 60% to 99.8% by weight of 2-ethylhexyl acrylate, (B) from 0.2 to 10% by weight of an α,β-unsaturated carboxylic acid, and (C) up to 30% by weight of a vinyl monomer other than monomers (A) and (B) in the presence of an emulsifying agent and from 0.01 to 10 parts by weight of a compound having an allyl hydrogen atom selected from the group consisting of abietic acid and derivatives thereof having the formula: ##STR4## wherein R is hydrogen or alkyl and the encircled H groups represent allyl hydrogen atoms, and allyl alcohol.
Claim 3
Dependent Claim
37 words
The process as claimed in claim 1, wherein said compound having an allyl hydrogen atom is present in an amount ranging from 0.1 to 3 parts by weight per 100 parts by weight of the total monomers.
Claim 4
Dependent Claim
29 words
The process as claimed in claim 1, wherein said component (B) is present in an amount ranging from 0.5 to 5% by weight based on the total monomer content.