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
1991-05-06
1993-04-13
Bleutge, John C.
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...
524577, 524578, 524845, C08K 3306
Patent
active
052023753
ABSTRACT:
A polymeric emulsion comprising a (i) polymer, (ii) water, and (iii) a surfactant is useful for producing a water-resistant film. The polymer comprises about 25 to about 90 weight percent of a soft monomer whose homopolymer has a T.sub.g of less than about -20.degree. C., about 10 to about 75 weight percent of a hard monomer whose homopolymer has a T.sub.g of greater than about 30.degree. C., about 1 to about 5 weight percent of an olefinic carboxylic acid, and about 0.5 to about 5 weight percent of a cross-linking agent. Typically, the polymer comprises less than about 1 weight percent surfactant and has a T.sub.g of about -50.degree. to about 50.degree. C. and an average particle size of less than about 250 nm. The emulsion generally comprises at least about 40 weight percent solids and has a surface tension of at least about 45 dynes/cm.
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Chemical Abstracts: 102:97055g (1985).
Bleutge John C.
Rohm and Haas Company
Sweet Mark
Vouros James G.
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