Coating process
US4937114A · kind A · utility
5Cited by
0References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1989 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | May 8, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31692
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aluminium or tinned-steel can for carbonated beverage is protected by a low-temperature curing lacquer. The lacquer is applied as an aqueous coating formulation of ethylene maleic acid copolymer (containing KOH to promote decarboxylation) plus some poly(acrylic acid) to promote coherent-film-forming ability plus a diol cross-linking agent to reduce the water-sensitivity. The coated substrate is heat-cured at the relatively low temperature of 200.degree. C. for 10 minutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.