Durable abrasion-resistant coating at room temperature under moisture

摘要

Disclosed herein is a room temperature, moisture-curable abrasion-resistant coating that is formulated from (A) a multifunctional acrylate, (B) an alkoxyfunctional organometallic compound of the general formula (OR)4M, wherein M is selected from Ti or Si atom and (C) a trialkoxyaminosilane. The ratio of (C) to (A) is selected such that the molar ratio of NH2 groups to functional acrylate groups is at least 10:1. The claimed composition has enhanced weatherability because our cure mechanism relies on moisture and is not adversely affected by the inclusion of substantially high quantities of ultraviolet protectants in the form of ultraviolet light absorbers and free radical scavengers.