| 摘要 |
<p>A coating composition having improved abrasion resistance is provided, which comprises (A) a composition comprising (1) an organooxy-chainstopped organopolysilsesquioxane, (2) a tetraorganotitanate, (3) (a) a siloxane-functionalized ester having the general formula (R<3>O)3-2nSiOnR<4>OC(O)R<5>C(O)OR<6>, wherein n is equal to 0, 1/2, or 1, each R<3> is independently a saturated or unsaturated monovalent hydrocarbon radical containing from 1 to about 20 carbon atoms, R<4> is a divalent hydrocarbon radical containing from 1 to about 20 carbon atoms, R<5> is a divalent conjugated olefinic radical having from 2 to 4 carbon atoms, and R<6> is R<3> or R<4>SiOn(OR<3>)3-2n; or (b) a cyanoorganotriorganooxysilane; and (4) an organic carboxylic acid ester; and (B) from 0% to about 85% of a volatile diluent. Also provided is a coating composition having improved abrasion resistance wherein part (A) is a copolymer of the organopolysilsesquioxane (A)(1) above and the ester (A)(3). <IMAGE></p> |
