Polymers containing polyacetal blocks, their preparation and the

Details Polymers containing polyacetal blocks, their preparation and the Polymers containing polyacetal blocks, their preparation and the

1997-09-19

1998-05-26

Glass, Margaret W.

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

Synthetic resins

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

525398, 525401, 528230, 528249, 528250, 528267, 528266, 528269, 528270, 25217424, 510476, C08G 230

Patent

active

057565945

ABSTRACT:
Polymers which contain polyacetal blocks are obtainable by polymerizing carboxylates containing aldehyde groups in the presence of initiators and reacting the polymers with at least bifunctional crosslinking agents in the presence of acids or Lewis acids and, if required hydrolyzing the ester groups present as polymerized units, process for the preparation of the polymers containing polyacetal blocks by polymerizing carboxylates containing aldehyde groups in the presence of initiators and reacting the resulting polyacetals containing terminal hydroxyl groups with at least bifunctional crosslinking agents in the presence of acids or Lewis acids, and the use of the resulting polymers as additives in phosphate-free and reduced phosphate detergents and cleaning agents, as scale inhibitors and as dispersants for pigments.

REFERENCES:
patent: 4146495 (1979-03-01), Crutchfield et al.
patent: 4315092 (1982-02-01), Crutchfield et al.
patent: 4713441 (1987-12-01), Heller et al.
Journal of Polymer Science, vol. 18, 1980, pp. 293 through 297.

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