Process for the production of transparent polymers of vinyl chlo

Details Process for the production of transparent polymers of vinyl chlo Process for the production of transparent polymers of vinyl chlo

1976-08-27

1979-07-24

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 23AR, 260 23XA, 260 23EM, 260 297UA, 525281, 525287, 525301, 525305, 525306, 525307, C08L 2706

Patent

active

041622391

ABSTRACT:
Process for the preparation of a transparent, weather-resistant vinyl chloride polymer having a very high impact strength by the polymerization of vinyl chloride either together with or without other copolymerizable monomers in aqueous dispersion by the emulsion polymerization method in the presence of at least one acrylic ester copolymer. The process involves emulsion polymerizing vinyl chloride or a monomer mixture containing at least 80 percent by weight of vinyl chloride in the presence of a dispersion of at least one acrylic ester copolymer consisting of 90 to 99.7 percent by weight of at least one acrylic ester containing 3 to 16 carbon atoms in the ester group and 0.3 to 10 percent by weight of a polyfunctional monomer having at least two non-conjugated ethylenic double bonds, at least one of said double bonds being of the allyl type. The acrylic ester copolymer having a mean particle diameter of 30 to 150 nm, determined by soap titration. The acrylic ester copolymer is used in a quantity such that the resultant vinyl polymer contains 4 to 20 percent by weight of acrylic ester units.

REFERENCES:
patent: 3334156 (1967-08-01), Calentine et al.
patent: 3426101 (1969-02-01), Ryan et al.
patent: 3655825 (1972-04-01), Souder et al.
patent: 3776982 (1973-12-01), Nicolet et al.
patent: 3832318 (1974-08-01), Gallagher et al.
patent: 4014842 (1977-03-01), Kosugi et al.

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