Stock material or miscellaneous articles – Composite – Of polycarbonate
Patent
1980-02-08
1982-06-01
Van Balen, William J.
Stock material or miscellaneous articles
Composite
Of polycarbonate
427164, 427165, 4273934, 4273935, 4274072, 4274121, 428442, 428502, 428507, 428911, B32B 2736, B32B 1710, B32B 2742, B05D 302
Patent
active
043328598
ABSTRACT:
Coated formed materials of plastics or glass having improved anti-scratching and anti-fogging properties, are produced by applying to the surface of the formed material an undercoating material comprising (a) a mixture of methylolmelamine in which all or a part of the methylol groups are alkyletherified, and a polyhydric alcohol having a molecular weight of 1,500 or less which may contain an ethylene oxide or propylene oxide chain, or a pre-condensate thereof, (b) a mixture of a monomer having a unit of the formula (I), ##STR1## wherein R.sub.1 and R.sub.2 are independently a hydrogen atom or a lower alkyl, carboxyl or amino group and X is a hydroxyl group-containing side chain, or a homopolymer or copolymer thereof, and a crosslinking agent, or (c) a mixture of (a) and (b), followed by curing it so that the percentage of residual hydroxyl groups therein is from 60 to 90%, thereby forming a resin film (1), and then topcoating the resin film (1) with a topcoating material comprising a mixture of (d) a mixture of methylolmelamine in which all or a part of the methylol groups are alkyletherified, and a polyhydric alcohol having a molecular weight of 100 to 2,000 and an ethylene oxide chain, or a pre-condensate thereof and (e) a surface active agent, followed by curing it so that the percentage of residual hydroxyl groups therein is 35 to 70%, thereby forming a melamine resin film (2).
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Fujioka Akira
Funaki Masaaki
Sakiyama Kazuo
Shimauchi Yoshinori
Yoshida Motoaki
Sumitomo Chemical Company Limited
Van Balen William J.
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