Aqueous dispersion of a peelable coating composition
US6211282A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 17, 1997 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Oct 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The aqueous dispersion of a peelable coating composition of the present invention is (a) a mixture containing 5-40% by weight of an emulsion of an acrylic copolymer having a glass transition temperature (hereinafter referred to as "Tg") of not lower than 40.degree. C., and 95-60% by weight of an emulsion of another acrylic copolymer having a Tg ranging from -20.degree. C. through 5.degree. C. The acrylic copolymer emulsion mixture (b) contains ethylenically unsaturated vinyl monomers having acid value in a total amount of 0.5-1.0% by weight, and (c) at least one of the acrylic copolymer emulsions is an acrylic copolymer which has been polymerized by use of a reactive surfactant, and (d) the particle size of the acrylic copolymer emulsions is not more than 200 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.