Process for polymerizing vinyl chloride monomer

Details Process for polymerizing vinyl chloride monomer Process for polymerizing vinyl chloride monomer

1978-02-03

1978-09-12

Wong, Jr., Harry

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526204, 526344, 526345, C08F 1406

Patent

active

041139321

ABSTRACT:
In a process for polymerizing vinyl chloride monomer by the polymerization of vinyl chloride alone or a mixture of vinyl chloride as a main component and a monomer copolymerizable therewith in an aqueous medium, an improvement which comprises carrying out said polymerization in the presence of a polycyclic nitrogen-containing compound of the formula, ##STR1## wherein m and n are each an integer of 1 to 3, the amount of said compound being 1 ppm to less than 100 ppm by weight based on said monomer or monomer mixture. By this process, it is possible to substantially prevent the formation of scale attached to the polymerization vessel and the like without damaging the physical properties of the produced vinyl chloride polymer.

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patent: 3515709 (1970-06-01), Nelson et al.
patent: 3669946 (1972-06-01), Koyanagl et al.
patent: 3915944 (1975-10-01), Burgess et al.
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patent: 3957744 (1976-05-01), Deuschel et al.
patent: 3959235 (1976-05-01), Nishigaki et al.
patent: 3962196 (1976-06-01), Weimer et al.
patent: 3997707 (1976-12-01), Aruga et al.
patent: 4029616 (1977-06-01), Tajima et al.
patent: 4068052 (1978-01-01), Weimer
Summary of Japanese Patent Publication No. 4753/71 (Feb. 2, 1967).

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