Polyethylacetylene derivative and process for preparation thereo

Details Polyethylacetylene derivative and process for preparation thereo Polyethylacetylene derivative and process for preparation thereo

1989-12-01

1992-02-25

Page, Thurman K.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526113, 526114, 526159, 526279, 526285, 526259, 5263265, C08F 3008, C08F 3800, C08F 406

Patent

active

050914880

ABSTRACT:
A novel polyethynylacetylene derivative represented by the formula ##STR1## wherein R is H, (C1-7) alkyl, phenyl, benzyl, naphthyl, carbazole, (C2-7) vinyl-alkyl --CX.sub.1 X.sub.2 (OH) or --SiX.sub.1 X.sub.2 X.sub.3 in which X.sub.1, X.sub.2 and X.sub.3 are H, (C1-7) alkyl, phenyl or benzyl, with the proviso that the case where all of X.sub.1, X.sub.2 and X.sub.3 are H is excluded and x is a number of 20 to 500. The polyethynylacetylene derivative is prepared by polymerizing a monomer of the formula HC.tbd.C--C.tbd.CR wherein R is as defined above, with the proviso that the case where R is H is excluded, in the presence of a metathesis catalyst or a Ziegler catalyst. A polyethynylacetylene derivative of the above formula (wherein R=H) is prepared by reacting a polyethynylacetylene derivative of the above formula wherein R=Si(C.sub.n H.sub.2n+1).sub.3 with a desilylating agent. The polyethynylacetylene derivative is soluble in organic solvents and can be shaped into various articles. This polymer is used as a high-sensitivity pattern-forming material and is promising as a precursor for polyacene polymers.

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