Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1987-01-07
1991-05-21
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524808, 524809, 524812, 524813, 524814, 524815, 524816, 524819, 524820, 524821, 524822, 524823, 524824, 524832, 524833, C08L 4300
Patent
active
050176463
ABSTRACT:
(A) 1 to 50% by weight of at least one end carboxyl bearing reactive vinyl monomer of the formula: ##STR1## in which R.sub.1 is hydrogen or methyl group; R.sub.2 is a substituted or unsubstituted aliphatic hydrocarbon having 2 to 10 carbon atoms, alicyclic hydrocarbon having 6 to 7 carbon atoms or aromatic hydrocarbon having 6 carbon atoms; A is a repeating unit of ##STR2## R.sub.3 is ethylene or propylene; R.sub.4 is a substituted or unsubstituted alkylene having 2 to 7 carbon atoms; R.sub.5 is a substituted or unsubstituted alkylene having 2 to 5 carbon atoms; m is an integer of 1 to 10; n is an integer of 2 to 50; X is an inorganic or organic base, and when .alpha., .beta.-ethylenically unsaturated compound(s) (B) hereinunder referred to includes a basic relative monomer, it may be hydrogen atom, and
(B) 99 to 50% by weight of at least one other .alpha., .beta.-ethylenically unsaturated compounds, in an aqueous medium through an emulsion polymerization and removing the said medium therefrom.
The invention also concerns an aqueous emulsion containing said microparticles in a considerable quantity, which is specifically useful in an aqueous paint.
REFERENCES:
Homola, A. and James, R. O., "Preparation and Characterization of Amphoteric Polystyrene Latices," Journal of Colloid and Interface Science, vol. 59, No. 1, 123-134 (1977).
Ishikura et al, U.S. Pat. No. 4,468,493, issued Aug. 28, 1984, "High Solid Coating Composition Containing Novel Microparticles of Crosslinked Copolymer Containing Amphoionic Groups."
Ishii Keizuo
Miyazono Tadafumi
Muramoto Hisaichi
Reddick J. M.
Schofer Joseph L.
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