Primer composition for optical articles and optical articles
AssigneeTokuyama Corporation
InventorsKatsuhiro Mori, Shunichiro Nakatsukasa
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Abstract
A primer coating composition is provided for an optical article capable of forming a coating layer having excellent impact resistance, abrasion resistance, adhesion and high refractive index to an optical base material, having high refractive index, specifically a plastic lens without occurrence of poor appearance such as ununiformity, cloudiness, etc. and regardless of the materials of the plastic lens. A primer composition for an optical article may comprises urethane resin having a polycarbonate-derived skeleton, polyester resin, inorganic oxide fine particles and water, and water-soluble organic solvent, if necessary.
Claims27
A primer composition for an optical article comprising;
- (A) an aqueous dispersion of urethane resin having a polycarbonate-derived skeleton (A-component);
- (B) a polyester resin prepared by polycondensation of polybasic acid and polyhydric alcohol and containing no urethane bond (—NHCOO—) in its molecule (B-component);
- (C) inorganic oxide fine particles (C-component);
- and
- (D) water (D-component), characterized in that to 100 parts by weight of A-component, B-component is 10˜95 parts by weight, C-component is 70˜300 parts by weight, and D-component is 150˜2300 parts by weight.
Dependencies are inferred from the claim text.