Waterborne primer and oxygen barrier coating with improved adhesion
US6106950A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Jun 4, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31565
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to oxygen barrier film structures and a method of using thereof. More particularly, the invention relates to oxygen barrier film structures comprising at least one substrate, a primer layer on at least one surface of the substrate, said primer comprising a mixture of at least one aqueous dispersion of polyurethane (A) and at least one water dispersible crosslinking agent (B); an oxygen and moisture resistant barrier coating onto said primer treated surface of the polymeric substrate; said coating comprising a mixture of at least one aqueous polyvinyl alcohol or its copolymers (C) and at least one crosslinking agent (D). Improved adhesion properties of the barrier coating on substrates such as polyolefin, polyester and polyamide are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.