Acrylamide copolymer thickener for aqueous systems
US4395524A · kind A · utility
85Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1981 |
| Grant date | Jul 26, 1983 |
| Priority date | — |
| Expiry date | Apr 10, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Nonionic and anionic water-soluble addition copolymers of acrylamide and N-substituted acrylamides are useful as flow modifiers in and as adsorbates from aqueous systems, particularly multiphase systems. The copolymers have a weight average molecular weight greater than 30,000 and are useful for many purposes including as thickening agents or rheology modifiers for water based systems, block improvement additives in water based coating formulations, and transfer aids in water based ink or roll coater formulations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.