Chlorine-free, zero voc, waterborne adhesion promoter for polyolefinic substrates
US6455614B1 · kind B1 · utility
8Cited by
13References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1998 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Sep 16, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2463/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A zero VOC aqueous coating composition comprising a halogen-free propylene/&agr;-olefin copolymer having an &agr;,&bgr;-unsaturated dicarboxylic acid or anhydride grafted thereon, a neutralizing base, a water-dispersible resin containing at least two epoxy groups and an acid catalyst is applied to a plastic substrate comprising a propylene polymer. The dried coating promotes adhesion of a subsequent coating to the polypropylene-based surface of the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.