Beverage containers coated with a water-based liner
US4283428A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1977 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Mar 8, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D163/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Metal containers suitable for packaging beer and other beverages have as the internal sanitary liner a film of a water-based coating composition prepared by dissolving or dispersing in aqueous medium an at least partially neutralized reaction product of a polyepoxide having a 1,2-epoxy equivalency greater than 1.0 and an amino acid containing at least one amine group and at least one carboxyl group, wherein the amine groups of the amino acid are preferentially reactive with the epoxy groups of the polyepoxide, and a curing or cross-linking agent. These compositions provide containers with cured liners which do not impart undesirable turbidity or taste characteristics to the beer, soft drinks or fruit juices packaged therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.