Polyurethane crosslinkers, and the process for preparing and using the same
US4403085A · kind A · utility
17Cited by
13References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1981 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Dec 14, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31605
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane crosslinker is provided by reacting a partially-blocked diisocyanate and a hydroxyl-terminated, carboxyl group-containing polyurethane precursor. The precursor is a reaction product of a diol containing a carboxyl group and another diol of high molecular weight, and a diisocyanate. The instant crosslinkers are particularly useful in water-based coating compositions for metal containers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.