| 摘要 |
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 temperature in the range of -15 to -75.degree.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. |
