Stable low foam waterborne polymer compositions containing poly(alkyleneimines)
US5990224A · kind A · utility
59Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Feb 13, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D201/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention provides low foam waterborne polymer compositions stabilized against gelling due to the addition of a poly(alkylenimine) by addition of surfactants. Preferably, the surfactants are nonionic surfactants having a hydrophilic-lipophilic balance (HLB) of at least about 17.5. Polymerization in the presence of phosphate surfactants has been found to yield low foam polymers. These stable low foam polymer compositions are useful in a variety of coating formulations such as, for example, paints, inks, sealants, textile backcoatings, adhesives and the like. Methods of making stable low foam polymer are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.