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US5232783A Abrasion resistant coatings for glass articles 失效
玻璃制品耐磨涂层

Abrasion resistant coatings for glass articles
Abstract:
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.sup.3 O).sub.3-2n SiO.sub.n R.sup.4 OC(O)R.sup.5 C(O)OR.sup.6, wherein n is equal to 0, 1/2, or 1, each R.sup.3 is independently a saturated or unsaturated monovalent hydrocarbon radical containing from 1 to about 20 carbon atoms, R.sup.4 is a divalent hydrocarbon radical containing from 1 to about 20 carbon atoms, R.sup.5 is a divalent conjugated olefinic radical having from 2 to 4 carbon atoms, and R.sup.6 is R.sup.3 or R.sup.4 SiO.sub.n (OR.sup.3).sub.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).
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