C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/257, 117/31,
C08G 59/20 (2006.01) C08F 220/32 (2006.01) C08G 59/64 (2006.01) C08L 33/16 (2006.01) C09J 133/06 (2006.01)
Patent
CA 1042585
ABSTRACT OF THE DISCLOSURE There is provided an organic solvent solution and a pressure-sensitive permanently tacky resin comprising an interpolymer comprising between 0.1 and 15 weight percent of an .alpha.,.beta.-ethylenically unsaturated aliphatic carboxylic acid, between 0.1 and 2 weight percent of a glycidyl monomer selected from the group consisting of glycidyl acrylate, glycidyl methacrylate and allyl glycidyl ether, between 35 and 84.9 weight percent of a monomer selected from the group consisting of esters of acrylic acid and methacrylic acid containing from 6 to 20 carbon atoms, and up to 64.8 weight percent of a monomer selected from the group consisting of .alpha.-olefins containing 2 to 10 carbon atoms, vinyl esters of alkanoic acids containing from 3 to 10 carbon atoms, ethyl and methyl esters of acrylic and methacrylic acids, acrylonitrile, methacrylonitrile, styrene and vinyl chloride, wherein the interpolymer has a weight average molecular weight in the range of 10,000 to 500,000 and a glass transition temper- ature in the range of -15 to -75°C; and 1,3-bis(dimethylamino)- 2-hydroxypropane; wherein there are between 0.01 and 1.6 parts by weight of the 1,3-bis(dimethylamino)-2-hydroxypropane per 100 parts by weight of interpolymer. The solutions exhibit improved viscosity stability and provide pressure-sensitive resin films with cohesive strength and low release values from silicone release paper.
192943
Gardner Donald M.
Mckenna Lawrence W.
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