Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1990-11-30
1992-05-26
Lowe, James
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156280, 427163, 427164, 427165, 4274071, 4274072, B05D 102, B32B 2740, B32B 1710
Patent
active
051164426
ABSTRACT:
A polyurethane film of excellent optical quality is prepared by applying to a substrate, by reactive casting or reactive spraying, a reaction mixture of an isocyanate component and a polyol component containing at least one long difunctional polyol having a molecular weight between 500 and 10,000, containing at least partial ethylene oxide segments, with the percentage by weight of ethylene oxide segments relative to the total weight of the polyurethane being greater than 20%, at least one short diol as chain extender, with the ratio of free NCO groups of the isocyanate component to free OH groups of the polyol component being between 1.5 and 2; and contacting a surface of said applied material intended to face toward the outside of the safety glass with a surface treatment compound of an acrylic derivative or isocyanate having a functionality greater than 2.
REFERENCES:
patent: 3935367 (1976-01-01), Merrill et al.
patent: 4039720 (1977-08-01), Cherenko et al.
patent: 4784916 (1988-11-01), Bravet
patent: 4818622 (1989-04-01), Bravet et al.
patent: 4830806 (1989-05-01), Daude et al.
patent: 4983461 (1991-01-01), Daude et al.
Bravet Jean-Louis M.
Daude Gerard M.
Lowe James
Saint-Gobain Vitrage
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