Liquid crystalline polymer composition

Compositions – Liquid crystal compositions

Reexamination Certificate

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C252S299500, C252S299620, C252S299670, C528S176000, C528S190000, C528S193000, C528S194000

Reexamination Certificate

active

07341675

ABSTRACT:
Liquid crystalline polymers containing specified ratios of repeat units derived from hydroquinone, 2,6-naphthalenedicarboxylic acid, 4-hydroxybenzoic acid and optionally terephthalic acid have exceptionally high heat distortion temperatures, making especially useful for service at high temperatures. Compositions containing reinforcing agents, especially fibrous or platy reinforcing agents are particularly useful. These polymers and compositions are useful for electrical and electronic connectors, and as films for the electronics industry, and for other uses.

REFERENCES:
patent: 4067852 (1978-01-01), Calundann
patent: 4169933 (1979-10-01), Jackson, Jr. et al.
patent: 5110896 (1992-05-01), Waggoner et al.
patent: 5250654 (1993-10-01), Alms et al.
patent: 6121369 (2000-09-01), Stack et al.
patent: 6306946 (2001-10-01), Long et al.
patent: 6348163 (2002-02-01), Long et al.
patent: 2004/0058137 (2004-03-01), Okamoto et al.
patent: WO 95/33803 (1995-12-01), None
W. Jerome Jackson, The British Polymer Journal, 1980, pp. 154-162, p. 158, 159.

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