Dry-bonded film laminate employing polyurethane dispersion adhesives with improved crosslinkers
US5532058A · kind A · utility
25Cited by
17References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1993 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Aug 12, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31634
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Improved bonded properties of dry-laminated flexible film substrates, for instance laminates comprising films of thermoplastics such as polyolefins, polyesters, and polyamides, as well as paper, cellophane, and metals, particularly after exposure to boiling water, are obtained with polyurethane dispersion adhesives when a plural aziridine or carbodiimide compound, or a mixture of a plural epoxy compound with a plural aziridine or carbodiimide compound, is employed as the crosslinker for the adhesive system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.