Polypropylene or polymethylpentene film coated with graft undercoat mixture and vinylidene chloride copolymer top coating
US4038449A · kind A · utility
6Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1975 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | Dec 22, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31924
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polyolefin film is coated with an undercoat of a mixture of (a) graft copolymer of chlorinated polypropylene to which is grafted a chlorinated vinyl monomer or a styrene monomer and (b) acrylonitrile-butadiene rubber, and a top coat of vinylidine chloride copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.