Patent ID: 8409714
Filing Date: 2013-04-02
Classification: C08K,C09D,G02B,Y10T

Abstract:
1. A primer composition for an optical article, said primer composition comprising; (A) an aqueous dispersion of urethane resin, said urethane resin having a polycarbonate-derived skeleton and an elongation from 200˜1000%, wherein the urethane resin is dispersed in water; (B) an organic solvent having 3˜9 carbon atoms and having an ether bond or a carbonyl bond per molecule of said solvent and one hydroxyl group per said molecule; and (C) a lower alcohol having 1˜4 carbon atoms, wherein a weight ratio of said (B) organic solvent to said (C) lower alcohol (B/C) is in the range of 0.01 to less than 2.00.