Acrylic copolymer coatings
US4136075A · kind A · utility
18Cited by
8References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Apr 27, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31699
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Acrylic copolymer solutions having a T.sub.g less than 0.degree. C., a weight average molecular size ranging from about 20,000 to about 50,000 and consisting essentially of about 4-14% ethylenically unsaturated acid, about 80-95% methyl acrylate and/or ethyl acrylate and about 1-8% lower alkyl methacrylate are obtained by copolymerizing the comonomers in the presence of an organic solvent which functions as a chain terminator. Water-borne, heat-curable, internal can coating compositions may be prepared by formulating these acrylic copolymer solutions with aqueous ammonia and a water-dispersible, cross-linking reagent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.