Aqueous polymer dispersion, method for making same, and use thereof for preparing paints
US5643993A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1996 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Jul 2, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F265/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aqueous dispersion of polymer particles comprising at least one first polymer and at least one second polymer which are mutually incompatible. The first polymer is non-crosslinked, has a glass transition temperature of from -25.degree. to 0.degree. C. and represents from 40 to 65% by weight of the particles; the second polymer is not alkali-soluble and is non-crosslinked, has a glass transition temperature of from 5.degree. to 40.degree. C. and represents from 60% to 35% by weight of the particles; the glass transition temperature of the second polymer exceeds that of the first polymer by less than 40.degree. C. and the average particle size is between 100 and 300 nm. Application to the production of environmentally compatible paints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.