Tetrabromobisphenol a having a large particle size and process for its production

Tetrabrombisphenol A von hoher Teilchengrösse und Verfahren zu seiner Herstellung

Tétrabromobisphénol A de grande taille de particules et procédé pour sa production

Abstract

Single crystals of tetrabromobisphenol A having an average particle size of from 150 to 500 µm, each having a polyhedral shape.

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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    DE-2162859-A1July 13, 1972
    GB-1031500-AJune 02, 1966Kalk Chemische Fabrik GmbhMethod of making bromine derivatives of bis-(hydroxyphenyl)-dialkylmethanes
    JP-S49110653-AOctober 22, 1974

NO-Patent Citations (2)

    Title
    CHEMICAL ABSTRACTS, vol. 104, 1986, Columbus, Ohio, US; abstract no. 197560c,
    DATABASE WPI Week 7510, Derwent Publications Ltd., London, GB; AN 75-16707W & JP-A-49 110 653 (MITSUBISHI GAS CHEM CO)

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    US-6333437-B1December 25, 2001Teijin Chemicals LtdMethod for purifying a bromine compound
    WO-0146106-A1June 28, 2001Bilt Chemicals Limited4,4-isopropylidene-bis-(2,6dibromophenol) tres pur et procede de production de 4,4-isopropylidene-bis-(2,6dibromophenol) tres pur