Catalyst for bulk polymerization

Details Catalyst for bulk polymerization Catalyst for bulk polymerization

2007-01-30

2007-01-30

Pezzuto, Helen L. (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S084000, C526S085000, C526S222000, C526S317100, C526S318000, C526S318400, C526S319000, C526S320000, C526S328500

Reexamination Certificate

active

11068113

ABSTRACT:
A catalyst for bulk polymerization of a polymerizable unsaturated compound of the invention comprises a compound having at least one thiol group and a secondary hydroxyl group and represented by the following formula (I):wherein R1to R5are each a hydrogen atom or an alkyl group, and R6is a hydroxyl group, an alkyl group or the like. Also a process for bulk polymerization of the invention comprises polymerizing a polymerizable unsaturated compound in an inert gas atmosphere substantially in the absence of a solvent using, as a catalyst, a compound having at least one thiol group and a secondary hydroxyl group and represented by the above formula (I). According to the catalyst or the process of the invention, bulk polymerization can be carried out in one-component catalyst system in a high yield without suffering a runaway reaction.

REFERENCES:
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patent: 3961957 (1976-06-01), Kramp et al.
patent: 4141934 (1979-02-01), Wingler et al.
patent: 4585844 (1986-04-01), Wilkinson
patent: 5574117 (1996-11-01), Yoshida et al.
patent: 5596051 (1997-01-01), Jahns et al.
patent: 5929278 (1999-07-01), Campbell et al.
patent: 55-000401 (1980-01-01), None
patent: 2582510 (1997-02-01), None

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