Method of treating surface of molded article of polypropylene resin and method of coating said molded article with paint
US5273789A · kind A · utility
10Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Aug 7, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a method which enables the surface of a molded article of a polypropylene resin to be modified to a surface suitable for coating, bonding, printing, etc. A molded article of a polypropylene resin comprising polypropylene, an ethylene-propylene copolymer rubber and an ethylene-acrylic acid or ethylene-methacrylic acid copolymer and optionally a filler is irradiated in the air with a light from a synthetic quartz low pressure mercury lamp having an output of 200 W for 60 sec with the distance between the surface of the molded article and the lamp being kept at about 10 cm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.