Process for preparing polymeric acetal carboxylates
US4600750A · kind A · utility
4Cited by
1References
39Claims
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Key dates
| Filing date | Aug 27, 1985 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Aug 27, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3711
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved process is provided for producing polymeric acetal carboxylate salts useful as detergent builders. The process comprises polymerization of an alkyl glyoxylate, optionally with one or more comonomers; addition of stabilizing endgroups; and saponification of the polymeric ester to produce the polymeric acetal carboxylate salts. Active yield is improved by reducing the number of polymer chains with unstable temporary endcaps entering the saponification step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.