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AssigneeSimitomo Chemical Company, Limited
InventorsMasaaki Funaki, Motoaki Yoshida, Yoshinori Shimauchi, Akira Fujioka, Kazuo Sakiyama
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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 from 35 to 70%, thereby forming a melamine resin film (2).
A formed material of plastics or glass coated with an undermost film (3), a resin film (1) and a melamine resin film (2), said undermost film (3) being formed on the surface of said formed material by using a polymer (A) having a unit of the formula (II), ##STR10## wherein R.sub.3 and R.sub.4 are independently a hydrogen atom or a lower alkyl or carboxyl group, and Y is a carboxyl or amino group-containing side chain, or a polymer (B) having both units of the formulae (III) and (IV), ##STR11## wherein R.sub.5 and R.sub.6 are independently a hydrogen atom or a lower alkyl or carboxyl group, and z is a hydroxyl group-containing side chain, and ##STR12## wherein R.sub.7 and R.sub.8 are independently a hydrogen atom or a lower alkyl or a carboxyl group, and W is a side chain having a carboxyl, amino, substituted amino, epoxy or tetrahydrofuryl group, said resin film (1) being formed on the surface of said undermost film (3) by using (a) a mixture of methoylolmelamine 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), ##STR13## 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), and said melamine resin film (2) being formed on said resin film (1) by using (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.
A process for producing a formed material of plastics or glass having improved anti-scratching and anti-fogging properties, which comprises
Dependencies are inferred from the claim text.