Patent ID: 8889801

Claim:
A coating composition suitable for providing a thermoformable hardcoat comprising: (A) at least one silane-containing oligomer having the general formula (1) wherein each occurrence of R′ is independently a C1-C8 alkyl or C6-C20 aryl; each occurrence of R 2 is independently a C2-C8 alkylene; each occurrence of X is independently a halogen atom, C1-C6 alkoxy, C1-C6 acyloxy, C1-C6 alkenoxy or hydroxide; each occurrence of Y is independently an oxygen or R 2 ; a is an integer between 0 and 30; b is 2 or 3 and c is an integer between 0 and 6, and/or a partial hydrolytic condensate thereof; (B) at least one silane having the general formula (2): R 3 e SiX (4-e ) (2) wherein each occurrence of R 3 is independently a C1-C8 alkyl, C2-C8 alkenyl or C6-C20 aryl, each occurrence of X is a halogen atom, C1-C6 alkoxy, C1-C6 acyloxy, C1-C6 alkenoxy or hydroxide; e is 0, 1 or 2, and/or a partial hydrolytic condensate thereof; (C) metal oxide; and (D) condensation catalyst; wherein components (A), (B) and (C) are hydrolytically condensed in the presence of component (D) to achieve a T 3 to T 2 ratio of from about 0.83 to about 2.5.