Processes for the preparation of polymeric thickeners and uses t

Details Processes for the preparation of polymeric thickeners and uses t Processes for the preparation of polymeric thickeners and uses t

1978-09-28

1980-10-28

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 296E, 260 296MN, 260 334R, 525375, 525378, 525379, 525380, C08F 206, C08F 210

Patent

active

042308445

ABSTRACT:
Processes for preparing polymeric thickeners are provided which give, in preferred compositions, both good flow and leveling properties as well as sag resistance to coating compositions such as aqueous paints. The thickeners are prepared by conducting the polymerization in glycol such as ethylene glycol or propylene glycol with or without a little added water. The monomers polymerized consist essentially of (a) about 1-99% by weight of at least one unsaturated carboxylic acid of 3 to 6 carbon atoms, and (b) about 99-1% by weight of at least one ester of the formula ##STR1## wherein R and R.sub.2 are each hydrogen or methyl,

REFERENCES:
patent: 3352806 (1967-11-01), Hicks
patent: 3399152 (1968-08-01), Jamrog et al.
patent: 3652497 (1972-03-01), Jonas et al.
patent: 3708445 (1973-01-01), Jonas et al.
patent: 3862075 (1975-01-01), Sekmakas
patent: 3891591 (1975-06-01), Chang et al.
patent: 4138381 (1979-02-01), Chang et al.

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