Terpolymers of acrylamide, alkylacrylamide and betaine monomers
US4742135A · kind A · utility
14Cited by
4References
2Claims
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Key dates
| Filing date | Dec 4, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Dec 4, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/56
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A water soluble terpolymer having the structure: ##STR1## wherein x is selected from the group consisting of ##STR2## wherein x is about 1 to about 95 mole percent; y is about 0.1 to about 5.0 mole percent; R.sub.1 is methyl or hydrogen; z is about 1 to about 30 mole percent; R.sub.2 is an alkyl group of 1-5 carbon atoms; R.sub.3 is an alkyl group of 3 to 4 carbon atoms; R.sub.4 is an alkyl group of 1-5 carbon atoms; and R.sub.5 is an alkyl group of 4-20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.