Hydrophobically modified poly(acetal-polyethers)

Details Hydrophobically modified poly(acetal-polyethers) Hydrophobically modified poly(acetal-polyethers)

1995-04-05

1996-11-12

Dodson, Shelley

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

524876, 525 50, 525429, 525459, C08G 802

Patent

active

055741274

ABSTRACT:
Associative thickeners of the present invention are water soluble polymer compositions that have a backbone of poly(acetal- or ketal-polyether) with ends that are capped with hydrophobic groups. They are prepared by copolymerizing an alpha, omega-diol, -di,thiol or-diamino polyether with a gem-dihalide compound in the presence of a base to form an alpha, omega-diol, -dithiol or -diamino poly(acetal- or ketal-polyether) which in turn is reacted with hydrophobic reagents to form the final product. These associative thickeners are used in film forming coating compositions, such as latex paints.

REFERENCES:
patent: 3862100 (1975-01-01), Halasa et al.
patent: 3997613 (1976-12-01), Lenke et al.
patent: 4052370 (1977-10-01), Halasa et al.

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