Process for preparing polymeric acetal carboxylates

Details Process for preparing polymeric acetal carboxylates Process for preparing polymeric acetal carboxylates

1985-08-27

1986-07-15

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525400, 528245, C08G 600, C08L 6102

Patent

active

046007504

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.

REFERENCES:
patent: 4302564 (1981-11-01), Dyroff et al.

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