C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/9253, 400/92
C08K 5/42 (2006.01) B01F 17/00 (2006.01) C08F 2/26 (2006.01) C08F 218/08 (2006.01) C08F 220/04 (2006.01) C08G 65/326 (2006.01) C08L 57/10 (2006.01)
Patent
CA 1157598
ABSTRACT OF THE DISCLOSURE High acid content latexes can be produced through the use of novel polyethyleneoxy sulfonates surfactants. An aqueous emulsion can be produced from the reaction product of vinyl acid monomer and another copolymerizable monomer or monomers. The vinyl acid monomer being present in an amount equal to about 5% to about 50% by weight based on total weight of the monomers and the surfactant is present in an amount equal to about 0.1 to about 10 weight percent based on the total weight of monomers and is represented by the formula: R1R2(CH2CH2O)n-1CH2CH2SO3Me wherein: R1 is an alkyl or dialkyl having at least 6 carbon atoms; R2 is hydrogen or an aryl group; n is at least 3; and Me is NH4, Na, Li or K. High solids content aqueous vinyl acetate emulsions having long term stability are provided by polymerizing vinyl acetate in the presence of the above surfactant and water wherein R2 is an aryl group and n is greater than 9. The quantity of water is predetermined so as to produce a latex having at least 40% solids. When employed as surfactants for high acidity latexes, the salts are used in a concentration of between 0.1 and 10 weight percent of the polymer.
358048
Chakrabarti Paritosh M.
Kirchner Darrell G.
G. A. F. Corporation
Smart & Biggar
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