High melting fast crystallizing copolymer compositions

Details High melting fast crystallizing copolymer compositions High melting fast crystallizing copolymer compositions

1997-05-05

1998-06-16

Mosley, Terressa

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528190, 528192, 528193, C08G 6400

Patent

active

057672253

ABSTRACT:
Disclosed are copolycarbonate compositions comprising structural units of Formula I ##STR1## Formula II ##STR2## wherein R.sup.2 represents --CH.sub.3, --C.sub.2 H.sub.5, or propyl; A is a divalent organic moiety; and wherein the ratio of Formula I to Formula II in the copolycarbonate is from about 99.8:0.2 to about 90:10.

REFERENCES:
patent: 4920200 (1990-04-01), Brunelle et al.
Sun & Chang, Journal of Polymer Science: Parat A: Polymer Chemistry, vol. 31, pp. 2711-2719 (1993), Studies on the Thermotropic Liquid Crystalline Polycarbonates. III. Synthesis and Properties of Fully Aromatic Liquid Crystalline Polycarbonates.
Brunelle et al., Macromol. Symp. 77, pp. 117-124 (1994), "Preparation of Crystalline and Solvent Resistant Polycarbonates Via Ring-Opening Polymerization of Cyclic Oligomers".
Brunelle, Reprints from Elsevier Trends Journals, TRIP vol. 3, No. 5, May 1995, pp. 154-158, "Solvent-Resistant Polycarbonates".

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