Process for production of highly rigid shaped product of polymer

Details Process for production of highly rigid shaped product of polymer Process for production of highly rigid shaped product of polymer

1986-01-14

1987-03-31

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

264123, 264126, 264319, 26433116, 526285, B29C 4302

Patent

active

046541780

ABSTRACT:
A method for producing polyurethane or polyester containing therein the diacetylene group having high rigidity and useful in manufacturing precision mechanical parts, which comprises molding a polymer material containing therein the diacetylene group having a unit structure to be represented by the following general formula and a molecular weight in a range from 5.times.10.sup.2 to 1.times.10.sup.5 under a high pressure and at a temperature below the melting point of the polymer: ##STR1## wherein R is a divalent organic group; and x is an integer of 0 or 1.

REFERENCES:
patent: 3923622 (1975-12-01), Baughman
patent: 4014965 (1977-03-01), Stube et al.
patent: 4220747 (1980-09-01), Preziosi
patent: 4339951 (1982-07-01), Yee et al.
patent: 4439346 (1984-03-01), Gordhanbhai et al.

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