The invention relates to a kind of tetrabromo phthalic acid double (2 - ethylhexyl) ester synthesis method, solves the technical problems of high cost and with synthesis, the synthesis step is complicated, the resulting product purity is low, coloring the
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Paragraph 0026-0057
(2019/05/29)
Process for producing tetrabromobenzoate esters
A method for preparing tetrabromobenzoate ester from a tetrabromophthalic anhydride including the steps of reacting the tetrabromophthalic anhydride with a catalyst and an alcohol at a temperature that favors partial esterification over complete esterific
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Page/Page column 7-8
(2010/02/10)
PROCESS FOR PRODUCING TETRABROMOBENZOATE ESTERS
A method for preparing tetrabromobenzoate ester from a tetrabromophthalic anhydride including the steps of reacting the tetrabromophthalic anhydride with a catalyst and an alcohol at a temperature that favors partial esterification over complete esterific
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Page/Page column 16-17
(2008/06/13)
Plasticized polyvinyl chloride compound
A process for the preparation of dialkyl tetrahalophthalates. A tetrahalophthalic anhydride or acid is dissolved in excess C1-C18alkanols. Residual sulfuric acid is removed by treatment with magnesium acetate or multiple water washes
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Example 1
(2008/06/13)
Plasticized polyvinyl chloride compound
A highly flame retardant plasticized polyvinyl chloride compound (PVC) comprises a mixture of dialkyl tetrachlorophthalate and dialkyl tetrabromophthalate and is characterized by an absence of brittleness, and substantial flexibility at low temperatures a
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Example 1
(2008/06/13)
Efficient methods for making tetrahalophthalate esters having excellent purity
Provided are methods for the preparation and purification of alkyl tetrahalophthalate esters by the reaction of a tetrahalophthalic compound with an alkanol in the presence of a titanate catalyst. More particularly, improved methods are provided for makin
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(2008/06/13)
PROCESS FOR PREPARING ALKYL TETRABROMOPHTHALATES
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(2008/06/13)
Process for preparing alkyl tetrabromophthalates
Bis(2-ethyl-1-hexyl) tetrabromophthalate produced by the reaction of tetrabromophthalic anhydride with 2-ethyl-1-hexanol in the presence of titanium isopropoxide catalyst may be purified by contacting the reaction mixture with sodium carbonate decahydrate with agitation for a time and at a temperature sufficient to enhance product quality, followed by isolation of bis(2-ethyl-1-hexyl) tetrabromophthalate.
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(2008/06/13)
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