Thickening agent for aqueous compositions
US4351754A · kind A · utility
93Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1980 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Apr 10, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/932
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A mixture of a water swellable clay mineral and an alkali soluble and thickenable (meth)acrylic acid emulsion copolymer provides a highly effective thickening and gelling agent for aqueous systems at low concentrations. The gels are self-supporting and have high strength and thus are particularly useful as air fresheners and other applications where firm gels are desirable. A synergistic thickening effect between the (meth)acrylic acid copolymer and the clay mineral is observed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.