Method of treating surface of molded article of thermoplastic elastomer composition
US5132131A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 10, 1991 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Apr 10, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for treating the surface of a molded article, which comprises a combination of the steps of: PA0 providing a molded article made of a thermoplastic elastomer composition obtained by a thermal treatment of a mixture in the presence of an organic peroxide, which mixture is comprised of (A) an oil-extended olefinic copolymer rubber of an olefinic copolymer rubber having a Mooney viscosity (ML.sub.1+4 100.degree. C.) of 90-200 and a mineral oil type softening agent, (B) an olefinic plastic, and (C) a bismaleimide compound, the ratio by weight of (A) the oil-extended olefinic copolymer rubber to (B) the olefinic plastic, A/B, being 24/76-80/20, the content of (C) the bismaleimide compound being 0.1-3 parts by weight based on 100 parts by weight of the total amount of (A) the oil-extended olefinic copolymer rubber and (B) the olefinic plastic, PA0 contacting the surface of the molded article with a UV-rays absorbing liquid, and PA0 irradiating the surface of the molded article with UV-rays having main wave lengths of 300 nm, or less. According to the surface treatment of the present invention, the olefinic thermoplastic elastomer to which paints can hardly be applied hitherto sh…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.