Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1984-06-25
1987-12-08
Lawrence, Evan K.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
427163, 427164, 427387, 428329, 428330, 428331, 4284231, 4284233, 4284255, 4284256, 428484, B32B 516, B32B 1710, B32B 2740, B05D 506
Patent
active
047118059
ABSTRACT:
A process for the treatment of the surface of a transparent sheet or film having antilacerative and self-healing properties and the product made thereby, wherein the sheet or film includes a thermosetting polyurethane material employed as an external layer on a laminated glass or laminated plastic sheet or a mixture thereof. The process involves depositing a solution, dispersion or emulsion of wax or a wax-like substance and a silicone oil; or a solution, dispersion or emulsion of wax or a wax-like substance, a silicone oil and a fine-grained polishing agent on the surface of the polyurethane material. The solvent or solvents for the wax or wax-like substances have a boiling range of 40.degree. to 300.degree. C., and the silicone oil is present in an amount of less than 4% by wt. when no polishing agents are present and in an amount of from about 2 to 10% by wt. when fine-grained polishing agents are present. The product made by the process has been rendered particularly resistant to scratching and abrasion without formation of striations on the surface.
REFERENCES:
patent: 3971864 (1976-07-01), Beestrice et al.
"A Guide to Dow Corning Products", Midland, Michigan, Dow Corning Corporation, 1977, pp. 27-28.
Hawley, G. G., "The Condensed Chemical Dictionary", New York, Van Nostrand Reinhold Company, 1977, pp. 596, 810.
Gunther Esser
Helmer Radisch
Lawrence Evan K.
Saint-Gobain Vitrage
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