Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1989-05-22
1991-01-08
Seidleck, James
Stock material or miscellaneous articles
Composite
Of polyamidoester
427163, 427165, 427168, 4274072, 4284247, 4284256, 428409, B05D 102, B32B 2740, B32B 1710
Patent
active
049834614
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 to 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 et al.
Bravet Jean-Louis M.
Daude Gerard M.
Saint-Gobain Vitrage
Seidleck James
Sumihiro Don
LandOfFree
Scratch-resistant and abrasion-resistant transparent polyurethan does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scratch-resistant and abrasion-resistant transparent polyurethan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scratch-resistant and abrasion-resistant transparent polyurethan will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-933745