(CO)polymerization of vinyl chloride in the presence of a...

Details (CO)polymerization of vinyl chloride in the presence of a... (CO)polymerization of vinyl chloride in the presence of a...

2005-01-18

2005-01-18

Cheung, William K. (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S236000, C526S220000, C526S219500, C526S266000, C526S303100, C526S346000, C526S348700, C526S335000, C526S344000, C526S344100, C526S344200

Reexamination Certificate

active

06844405

ABSTRACT:
The present invention pertains to a process for controlled free radical polymerization or copolymerization of vinyl chloride at a temperature between 40° C. and 95° C., at a pressure between 5 and 30 bar in the presence of a stable free nitroxyl radical.

REFERENCES:
patent: 5880230 (1999-03-01), Syrinek et al.
patent: 6353107 (2002-03-01), Kramer et al.
patent: 9624620 (1996-08-01), None
Derwent Abstr. 1987-014023 for SU 1235872 (1986).
Derwent Abstr. 1998-088850 for EP 821013 (1998).

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