Prepration of shaped articles of intractable polymers

Details Prepration of shaped articles of intractable polymers Prepration of shaped articles of intractable polymers

1982-03-26

1984-01-31

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528193, 528348, 528353, 264234, 2642356, 2642358, 264236, 264345, 264346, 264347, C08G 6346, C08G 6306

Patent

active

044291043

ABSTRACT:
Shaped articles composed of polymers formed from residues which are not melt processable characterized in that the shaped article has been formed from a readily processable melt of a copolymer containing said residues together with in-chain temperature labile residues and has been subsequently heated to remove the labile constituents with recombination of the resultant polymeric residues. Preferably the processable melt should be in the form of an anisotropic melt so that the shaped article may be in oriented form prior to removal of the residues. Typically the shaped articles are articles of thin section composed of p-hydroxybenzoic acid residues.

REFERENCES:
patent: 3234181 (1966-02-01), Olivier
patent: 3287324 (1966-11-01), Sweeney
patent: 3387058 (1968-06-01), Levine
patent: 3759870 (1973-09-01), Economy et al.
patent: 3790528 (1974-02-01), Tesaki et al.
patent: 3817927 (1974-06-01), Kovacs et al.
patent: 3829406 (1974-08-01), Cottis et al.

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