Process for polymerizing acetylene

Details Process for polymerizing acetylene Process for polymerizing acetylene

1978-11-03

1980-04-29

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526142, 526160, 526170, 526285, C08F 448, C08F 3802

Patent

active

042007160

ABSTRACT:
A process is described for polymerizing acetylene to selectively produce partially crystalline polyacetylene in its cis and trans configurations, which when doped with halogen additives, are useful as electrical conductors or semi-conductors. The polymerization is conducted in a solution containing a lithium dicyclopentadienyl titanium hydride catalyst in a liquid organic solvent therefor, at a temperature in the range of about -120.degree. to +250.degree. C. Lower process temperatures, such as below -60.degree. C., favor the formation of the cis form, and higher temperatures, above 0.degree. C., favor the formation of the trans form.

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