C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/4907
C08F 279/02 (2006.01) C08F 259/06 (2006.01)
Patent
CA 1112780
ABSTRACT Improved aqueous vinylidene chloride copoly- mer latexes are provided in which the dispersed polymer particles are heterogeneous and comprise from 35 to 75 weight percent of polymerized vinylidene chloride and contain a major amount of a soft copolymer core com- prising vinylidene chloride and an aliphatic conjugated diene and a minor amount of a polymeric shell which encompasses the core portion and which consists essen- tially of (a) an aliphatic conjugated diene, a mono- vinylidene aromatic monomer or a saturated aliphatic ester of monoethylenically unsaturated carboxylic acids; (b) optionally, up to 40 weight percent (based upon the shell) of vinylidene chloride; and (c) optionally, up to 10 weight percent based upon such shell of a mono- ethylenically unsaturated carboxylic acid. These latexes have good heat and light stability and are useful as paper coatings, in carpet backsizing and in nonwoven fabrics. 25,808-F
322978
Smart & Biggar
The Dow Chemical Company
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