A kind of alkyl phosphine oligomer and its synthesis method

A synthesis method and oligomer technology, applied in the field of alkylphosphine oligomers and their synthesis, can solve the problems of low thermal stability, poor acid and alkali resistance, poor solvent resistance, easy hydrolysis, etc., and achieve good char formation ability , good solvent resistance and short reaction time
CN104610358BActive Publication Date: 2017-06-06SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEMICALS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEMICALS CO LTD
Publication Date
2017-06-06

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Abstract

The present invention discloses an alkylphosphine oligomer and a synthesis method thereof, wherein the structure general formula of the alkylphosphine oligomer is represented by the figure. The synthesis method comprises: adding a solvent and a stabilizer to thiophene, adding a dehydrogenation agent to a reactor under a cooling condition, increasing the reaction temperature to produce a dilithium salt, cooling the reaction system, adding alkyl phosphine dichloride in a dropwise manner, increasing the reaction temperature, adding a reagent, carrying out a quenching reaction, completing the reaction, and carrying out solvent removing, alcohol washing, water washing and drying to obtain the alkylphosphine oligomer. The product of the present invention has advantages of strong char formation ability and good stability. The synthesis method has advantages of continuous reaction process, short reaction time, simple synthesis process, and efficient reaction.
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Description

technical field

[0001] The invention belongs to the field of organic chemistry, and in particular relates to an alkylphosphine oligomer and a synthesis method thereof. Background technique

[0002] Since the 1980s, flame retardants have become one of the most important additives for polymer materials, and their usage is increasing day by day. Among many flame retardants, organophosphorus flame retardants are recognized as important varieties that can replace halogenated flame retardants because of their environmental friendliness and high efficiency. While endowing materials with good flame retardancy, compared with halogen flame retardants, it has the characteristics of less smoke generation and less formation of toxic and corrosive gases. In recent years, research on organophosphorus flame retardants has become a hot topic in the field of flame retardants.

[0003] The combustion process of polymers can be divided into five stages: heating, decomposition, ignition, combu...

Claims

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