Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1986-09-22
1989-09-12
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526258, 526266, 526274, C08F 2806, C08F13008, C08F23008
Patent
active
048661473
ABSTRACT:
Polymerization of acetylenic monomers is achieved by using a catalyst which is the reaction product of a tungsten compound and a reducing agent effective to reduce W(VI) to W(III and/or IV), e.g., WCl.sub.6.(organo-Li, organo-Mg or polysilane). The resultant silylated polymers are of heretofore unachievable high molecular weight and can be used as precursors to a wide variety of new acetylenic polymers by application of substitution reactions.
REFERENCES:
patent: 4410640 (1983-10-01), Kobayashi et al.
patent: 4591440 (1986-05-01), Higashimura et al.
patent: 4607088 (1986-08-01), Nomura et al.
J. Am. Chem. Soc., 1983, 105, pp. 7473-7474, Dec. 13, 1983.
Ikano et al., Trans. of Polymer Preprint, Japan, vol. 31, No. 6, pp. 1189-1192.
Acc. Chem. Res., 1984, vol. 17, pp. 51-56, Mosuda et al.
Chafin James H.
Hightower Judson R.
Kulkosky Peter F.
McMillan Armand
Schofer Joseph L.
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