C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/3073, 400/49
C08F 114/06 (2006.01) C08F 14/06 (2006.01) C08F 214/06 (2006.01)
Patent
CA 1225198
ABSTRACT OF THE DISCLOSURE A method for producing polymers of vinyl-chloride by suspension polymerization, the suspension stabilizer used being either A. a methylhydroxypropyl-cellulose with 20 to 32% methoxyl substitution, 2 to 10% hydroxy-propoxyl substitution, and a viscosity of 30 to 70 mPa.s, and/or B. a combination of suspension agents consisting of a) methyl-cellulose with 22 to 34% methoxyl substitution and a viscosity of 7 to 20 mPa.s, and b) methyl- cellulose with 22 to 34% methoxyl substitution and a viscosity of 50 to 4000 mPa.s and/or methylhydroxypropyl-cellulose with 20 to 32% methoxyl substitution, 2 to 10% hydroxy-propoxyl substitution, and a viscosity of 100 to 3000 mPa.s, polymerization being carried out in the presence of 0.4 to 8% by weight of an ethylene vinyl- acetate copolymer. The polymers obtained are suitable for lowering the viscosity of polyvinyl-chloride plastisols.
416777
Chemische Werke Huls Aktiengesellschaft
Degussa-Huls Aktiengesellschaft
Fetherstonhaugh & Co.
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