Polymers comprising alkali-insoluble core/alkali-soluble shell a

Details Polymers comprising alkali-insoluble core/alkali-soluble shell a Polymers comprising alkali-insoluble core/alkali-soluble shell a

1987-09-01

1990-04-10

Lieberman, Allan M.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523201, 523206, 524504, 524533, 525301, 525309, 525902, C08L 5100

Patent

active

049161717

ABSTRACT:
Disclosed herein are core-shell polymers having an alkali-insoluble, emulsion polymer core and an alkali-soluble, emulsion polymer shell attached or associated with said core so that upon dissolving said shell with alkali, a portion of said shell remains attached or associated with said core. Also disclosed are compositions wherein said shell polymer has been neutralized and substantially, but not totally, dissolved so as to form a blend of neutralized core-shell polymer and an aqueous solution of neutralized shell polymer.

REFERENCES:
patent: 3073791 (1963-01-01), Barkhuff
patent: 3282876 (1966-11-01), Williams et al.
patent: 3329628 (1967-07-01), Blyth
patent: 4207094 (1981-05-01), Huhn et al.
patent: 4325856 (1982-04-01), Ishikawa et al.
patent: 4427836 (1984-01-01), Kowalski et al.
patent: 4584231 (1986-04-01), Knoop

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