Cured particle incorporating a cured copolymer protective colloi

Details Cured particle incorporating a cured copolymer protective colloi Cured particle incorporating a cured copolymer protective colloi

1993-10-06

1995-06-06

Henderson, Christopher

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having a component wherein a constituent is liquid...

523206, 524512, 525936, B32B 326, C08L 6128

Patent

active

054221765

ABSTRACT:
The invention relates to copolymers containing
a) 20-90% of 2-acrylamido-2-methylpropanesulfonic acid, sulfoethyl or sulfopropyl (meth) acrylate or vinylsulfonic acid,
b) 0-50% of a vinylic acid,
c) 0-70% of methyl or ethyl acrylate or methacrylate, C.sub.2 --C.sub.4 -hydroxyalkyl acrylate or N-vinylpyrrolidone and
d) 0.1-10% of styrene or C.sub.4 --C.sub.18 -alkyl acrylate or C.sub.4 --C.sub.18 -alkyl methacrylate.
The copolymers according to the invention are particularly suitable as protective colloids for microencapsulation.

REFERENCES:
patent: 2300920 (1942-11-01), Heuer
patent: 3033833 (1962-05-01), Le Fevre
patent: 4406816 (1983-09-01), Sliwka
patent: 4436875 (1984-03-01), Janiga
patent: 4727116 (1988-02-01), Lange

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