Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1991-04-02
1993-09-28
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526193, 526209, 526216, 5263487, C08F 416
Patent
active
052487466
ABSTRACT:
A method of producing a polymer of a cationically polymerizable vinyl monomer by polymerizing at least one cationically polymerizable vinyl monomer using a polymerization initiator system composed of an organic compound having a functional group represented by formula (I) below ##STR1## where R.sup.1 represents a hydrogen atom, an alkyl group, or an aryl group; R.sup.2 represents an alkyl group, or an aryl group; X represents a halogen atom, an alkoxy group, or an acyloxy group, and a Lewis acid, wherein polymerization is carried out in the presence of a phosphorus-containing compound selected from the group consisting of a phosphine, a phosphine oxide, a phosphite, and a phosphate.
REFERENCES:
patent: 3641188 (1972-02-01), Yoo
patent: 4276394 (1981-01-01), Kennedy
patent: 4719271 (1988-01-01), Dietz
The Donor-Acceptor Approach to Molecular Interactions, by Viktor Gutman, Plenum Press, New York, 1978, pp. 19-27.
Hirokawa Yoshitsugu
Kitaoka Masami
Shimokawa Yoshiharu
Tahara Shin-ichiro
Tsunogae Yasuo
Delmendo R. H.
Nippon Zeon Co. Ltd.
Schofer Joseph L.
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