Process for the preparation of 1-monoalkyl dimethylsilylpropyne

Details Process for the preparation of 1-monoalkyl dimethylsilylpropyne Process for the preparation of 1-monoalkyl dimethylsilylpropyne

1992-09-08

1994-12-13

Yoon, Tae H.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526128, 526221, 528 14, 528 19, 528 31, C08G 7704, C08F 458

Patent

active

053730739

ABSTRACT:
A process for the preparation of 1-monoalkyl(C.sub.1 -C.sub.4) dimethylsilyl-1-propyne polymers which comprises polymerizing a 1-monoalkyl (C.sub.1 -C.sub.4)dimethylsilyl-1-propyne monomer in the presence of a compound of a transition metal and a member selected from .alpha.,.omega.-dihydropolydialkylsiloxanes and polyalkylhydrosiloxanes in a solvent inert to the polymerization. The polymerization reaction proceeds at low temperatures in an efficient manner. Membranes of the resultant polymer have a high gas transmission and suffer but little degradation when placed under severe temperature conditions.

REFERENCES:
patent: 4755193 (1988-07-01), Higashimura et al.
"Gas Permeability of Polyacetylenes Carrying Substituents", by Higashimura et al; Journal of Applied Polymer Science, vol. 30, pp. 1605-1616 (1985).
"Macromolecules", vol. 17, No. 2, Feb. 1984, pp. 126-129, American Chemical Society, Washington, US, T. Masuda et al.
"Polymerization of 1-chloro-2-phenylacetylene by MoC15-based Catalysts", Department of Polymer Chemistry, Kyoto University, Apr., 1983, T. Masuda et al.
"Accounts of Chemical Research", vol. 17, 1984, pp. 51-56, American Chemical Society, Washington, US, Synthesis of High Polymers from Substituted Acetylenes: Exploitation of Molybdenum- and Tungsten-Based Catalysts, T. Masuda.

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