Coating compositions for improved block resistance
US9938424B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2016 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Sep 22, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The aqueous, substantially volatile organic compound (VOC)-free coating compositions of the invention include an acrylic latex and a vinyl acetate-ethylene latex including from about 10 to about 90 weight percent of a vinyl acetate-ethylene polymer, based on total weight of acrylic polymer and vinyl acetate-ethylene polymer, having a Tg from about −20 to about 20 degrees Celsius; and from about 10 to about 90 weight percent of an acrylic polymer, based on the total weight of acrylic polymer and vinyl acetate-ethylene polymer, the acrylic polymer comprising, in polymerized form, at least one ethylenically unsaturated (meth)acrylic monomer and from about 0.01 to about 10 weight percent, based on total weight of the acrylic polymer, of an acetoacetate moiety containing monomer, where the acrylic polymer has a Tg of from about −20 to about 20 degrees Celsius.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.