Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1990-01-23
1992-07-28
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
106 13, 523169, 524493, 524557, 428270, 428331, 428334, 428336, 428428, 428446, 428447, 428448, 428451, C09K 318, B32B 2730, B32B 516
Patent
active
051340216
ABSTRACT:
Disclosed is an anti-fogging film having a multilayer structure comprised of at least two layers of a cured film formed on a substrate. The cured film contains as main components (A) polyvinyl alcohol and (B) at least one member selected from (a) colloidal silica having an average particle size of 5 to 200 m.mu., (b) an organic silicon compound of the formula R.sup.1 R.sup.2.sub.a SiX.sub.3-a in which R.sup.1 is an organic group having 1 to 10 carbon atoms, R.sup.2 is a hydrocarbon group having 1 to 6 carbon atoms, X is a hydrolyzable group and a is 0 or 1, and (c) a hydrolysis product of an organic silicon compound of the formula R.sup.1 R.sup.2.sub. SiX.sub.3-a in which R.sup.1, R.sup.2, X and a are as defined above, wherein the ratio S.sub.2 /S.sub.1 of the weight ratio S.sub.2 of component (A) to component (B) in the layer contiguous to the topmost surface layer to the weight ratio S.sub.1 of component (A) to component (B) in the topmost surface layer is at least 1.05.
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WPIL, File Supplier, No. 87-111632, Derwent Publications Ltd., London, GB; & JP-A-62 056 338 (Toray Ind. Inc.) Dec. 3, 1987.
WPIL, File Supplier, No. 87-230689, Derwent Publications Ltd., London, GB; & JP-A-62 153 147 (Toray Ind., Inc.) Aug. 7, 1987.
Hosono Hiroshi
Taniguchi Takashi
Brown Christopher
Lesmes George F.
Toray Industries Inc.
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