Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1992-09-30
1994-10-18
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
524280, 524281, 524611, 524612, 525462, 528196, 528202, 528204, C08G 6400
Patent
active
053570278
ABSTRACT:
Disclosed is a novel polycarbonate which has
(1) a repeating unit (I) represented by the general formula: ##STR1## and a repeating unit (II) represented by the formula: ##STR2## (all the symbols are as defined in the claims); (2) a trihalogenophenoxy group as the end group thereof; and (3) a viscosity average molecular weight of 10,000 to 50,000, and 1 to 10 mol % of the repeating unit (I) in the main chain.
The polycarbonate is excellent in all of flame retardance, impact resistance, and a thermostability at molding. Accordingly, the polycarbonate of the present invention is extensively and effectively used as various industrial materials such as home electric appliances, office automation devices, construction materials and the like.
REFERENCES:
patent: 3751400 (1973-08-01), Crennan et al.
patent: 4831100 (1989-05-01), Komatsu et al.
patent: 5185425 (1993-02-01), Komatsu
patent: 5242973 (1993-09-01), Komatsu
Chemical Abstracts, vol. 81, No. 22, 2 Dec. 1974, Columbus, Ohio, US; abstract No. 136938S, "Fire-resistant polycarbonate", p. 25, column 2; of JP-A-74 35 000 (Idemitsu Kosan Co., Ltd.) 30 Mar. 1974 *abstract*.
WPI, File Supplier, Derwent Publications Ltd., London, GB; AN-76-48521X (26) of JP-A-51 052492 (Idemitsu Kosan KK) Nov. 5, 1976 *abstract*.
Idemitsu Petrochemical Co. Ltd.
Kight III John
Mosley T.
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