Abrasion resistant coatings for glass articles

Details Abrasion resistant coatings for glass articles Abrasion resistant coatings for glass articles

1991-09-10

1993-08-03

Marquis, Melvyn I.

Stock material or miscellaneous articles

Composite

Of quartz or glass

528 17, 528 41, 524731, 524773, 524793, 524863, B32B 900

Patent

active

052327833

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).

REFERENCES:
patent: 3839246 (1974-10-01), Hamilton et al.
patent: 4273834 (1981-06-01), Yokokura et al.
patent: 4467068 (1984-08-01), Maruyama et al.
patent: 4656221 (1987-04-01), Kurita et al.
patent: 4871616 (1989-10-01), Kimura et al.
patent: 4985286 (1991-01-01), Kurita et al.
patent: 5095086 (1992-03-01), Pawar et al.

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