Compositions – Fire retarding – For solid synthetic polymer and reactants thereof
Patent
1990-05-14
1992-02-04
Lovering, Richard D.
Compositions
Fire retarding
For solid synthetic polymer and reactants thereof
252601, 252602, 252604, 2522995, 428 1, C09K 2100
Patent
active
050858076
ABSTRACT:
Disclosed is a flame-retardant liquid crystal polyester composition, which comprises (A) 100 wt. parts of a liquid crystal polyester comprising structural units of the following formulae (I), (II), (III) and (IV), in which the amount of units (I) and (II) is 77 to 95 mole% based on the sum of units (I), (II) and (III), the amount of units (III) is 23 to 5 mole% based on the sum of units (I), (II) and (III), and the units (I)/units (II) molar ratio is 75/25-95/5 and (B) 0.5 to 30 wt. parts of a polymeric flame retardant having an average dispersed particle diameter not larger than 2.5 .mu.m: ##STR1## wherein R.sub.1 and R.sub.2 are specific aromatic residues. This composition gives a molded article having a superior flame retardancy, heat resistance, mechanical properties, and appearance.
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Ichikawa Yasunori
Inoue Toshihide
Okamoto Masaru
Yamanaka Toru
Bhat Nina
Lovering Richard D.
Miller Austin R.
Toray Industries Inc.
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