US 7,455,912 B2
	Compositions containing a silanol functional polymer and related hydrophilic coating films
David N. Walters, Slippery Rock, Pa. (US); Truman F. Wilt, Clinton, Pa. (US); Kaliappa G. Ragunathan, Gibsonia, Pa. (US); and Brian E. Turner, Butler, Pa. (US)
Assigned to PPG Industries Ohio, Inc., Cleveland, Ohio (US)
Filed on Oct. 28, 2005, as Appl. No. 11/260,983.
Prior Publication US 2007/0099002 A1, May 03, 2007
Int. Cl. B32B 9/04 (2006.01)

U.S. Cl. 428—447  [428/500; 428/522; 526/279; 526/317.1; 526/319; 106/287.16; 106/287.12; 528/34]

20 Claims

1. A low-solids, aqueous coating composition comprising a polymer comprising silanol functional groups that are present on the polymer in an amount sufficient to give the polymer a silanol value of at least 300, wherein the composition has a resin solids content of no more than 15 percent by weight, based on the total weight of the composition.