Aqueous process for preparing water-soluble addition copolymers

Details Aqueous process for preparing water-soluble addition copolymers Aqueous process for preparing water-soluble addition copolymers

1993-01-12

1994-03-15

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526240, 5263182, C08F22204, C08F23004, C08F22202

Patent

active

052946894

ABSTRACT:
The present invention provides an aqueous process for preparing water-soluble addition copolymers of containing, as polymerized units: (a) from about 3 to about 95 percent by weight of one or more cyclohexene anhydrides or the alkali metal or ammonium salts thereof, and (b) from about 5 to about 97 percent by weight of one or more monomers C.sub.4 -C.sub.6 monoethylenically unsaturated dicarboxylic acids and the alkali metal and ammonium salts thereof. These copolymers are useful as water-treatment additives for boiler waters and cooling towers and as detergent additives acting as builders, anti-filming agents, dispersants, sequestering agents and encrustation inhibitors.

REFERENCES:
patent: 2359038 (1944-02-01), Hopff et al.
patent: 2421876 (1947-06-01), Gerhart
patent: 2479846 (1949-08-01), Gerhart
patent: 2537845 (1951-01-01), Morris et al.
patent: 2560119 (1951-07-01), McCaslin et al.
patent: 3838113 (1974-09-01), Smallman
patent: 4126738 (1978-11-01), Gaylord
patent: 4202955 (1980-05-01), Gaylord
U.S.S.R. Inventors Certificate SU891,707, Published Dec. 23, 1981.

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