Preparation of aqueous solutions of copolymers of dicarboxylic acids having a low dicarboxylic acid monomer content
US4659793A · kind A · utility
35Cited by
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9Claims
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Key dates
| Filing date | Mar 3, 1986 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Mar 3, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F222/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Very small amounts of certain metal ions promote copolymerization of aliphalic dicarboxylic acids with .alpha.,.beta.-ethylentically unsaturated monomers in an aqueous solution system maintained at a given pH range, whereby the amount of unreacted dicarboxylic acid monomer is significantly reduced while control of molecular weight of the resulting compolymers is maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.