Acetal carboxylic acid polymers

Details Acetal carboxylic acid polymers Acetal carboxylic acid polymers

1980-06-05

1981-12-01

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, 525403, 528232, 528239, 528243, 528245, 528270, C08G 600, C08L 6102

Patent

active

043037771

ABSTRACT:
A polymer having the average structure: ##STR1## wherein Y is a moiety containing 1 to about 20 carbon atoms randomly distributed along the polymer chain derived from a comonomer selected from the group consisting of aldehydes and epoxy compounds; p is 0 or 1; the product of q and n averages at least 4; R.sup.1 and R.sup.2 are individually any chemically stable group which stabilizes the polymer against rapid depolymerization in alkaline solution; and Z is a mixture of H and members selected from the group consisting of alkali metals, ammonium and alkanol amine groups having from 1 to about 4 carbon atoms, is useful for the reversible deflocculation of clay slurries. In the preferred embodiments, p is 0 to provide a homopolymer, the product of q and n averages between about 10 and about 200, and Z is a mixture containing at least 1 percent H, the remainder being alkali metal, e.g., sodium.

REFERENCES:
patent: 4144226 (1979-03-01), Crutchfield et al.
patent: 4204052 (1980-05-01), Crutchfield et al.

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