Acrylamide copolymers containing (meth)acrylamide benzene dicarboxylic units
US5103057A · kind A · utility
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3References
8Claims
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Key dates
| Filing date | Dec 18, 1990 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Dec 18, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C233/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New acrylamide copolymers formed by (meth)acrylamide benzene dicarboxylic monomer units in accordance with the following formula: ##STR1## wherein R is H or CH.sub.3 ; X is H or an alkaline metal or NH.sub.4 ; and wherein the COOX groups may be in ortho-, meta- or para- position in relation to each other, preferably being in ortho- position to each other; and of (meth)acrylamide monomer (II) units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.