Liquid crystalline polycarbonate from dihydroxy biphenyl and dih

Details Liquid crystalline polycarbonate from dihydroxy biphenyl and dih Liquid crystalline polycarbonate from dihydroxy biphenyl and dih

1990-04-12

1992-04-07

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528196, 528198, C08G 6406

Patent

active

051029758

ABSTRACT:
Polycarbonates are provided exhibiting anisotropic properties in the melt. Transesterification of diphenyl carbonate is effected in the melt with a mixture of 4,4'-dihydroxybiphenyl and 4,4'-dihydroxyphenylether. The polymer readily forms high strength fibers from the melt.

REFERENCES:
patent: 4439578 (1984-03-01), Kim et al.
patent: 4831105 (1989-05-01), Schissel
patent: 4845184 (1989-07-01), Langer et al.
patent: 4847351 (1989-07-01), Schissel et al.

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