Process for preparing methyl ethylphosphinate and methyl ethylphosphinate aluminum salt

A technology of ethyl methyl ethyl phosphinate and methyl ethyl phosphinic acid, which is applied in the field of dialkyl phosphinate flame retardant materials, can solve the problems of slow reaction rate, undisclosed reaction time, There are no problems such as the possibility of industrialized production, and the effects of high phosphorus content, reduced procedures, and reduced costs are achieved.
CN109400643AInactive Publication Date: 2019-03-01LIER CHEM CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LIER CHEM CO LTD
Publication Date
2019-03-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a process for preparing methyl ethylphosphinate and methyl ethylphosphinate aluminum salt, and belongs to the technical field of flame-retardant materials, aiming to solve thedifficulty in realization of industrial production of the methyl ethylphosphinate in the prior art. The process for preparing the methyl ethylphosphinate and the methyl ethylphosphinate aluminum saltincludes taking sodium iodide as a catalyst, and reacting methyl diethylphosphinate at the temperature of 80-180 DEG C to generate the methyl ethylphosphinate; reacting the methyl ethylphosphinate with aluminum trichloride in a solvent to obtain the methyl ethylphosphinate aluminum salt. The process has the advantages that the low-purity methyl diethylphosphinate serves as a raw material, the methyl ethylphosphinate is obtained under a moderate condition and at high yield, and industrialization is realized easily; methyl ethylphosphinate aluminum flame retardants with high phosphorus content are further obtained, and are environment-friendly halogen-free flame retardants for polymer materials.
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Description

technical field

[0001] The invention belongs to the technical field of dialkyl phosphinate flame retardant materials, and in particular relates to a preparation process of ethyl methyl ethyl phosphinate and aluminum methyl ethyl phosphinate. Background technique

[0002] Polymer materials (plastics, rubber, synthetic fibers, etc.) are widely used in various fields of human life because of their various types, outstanding performance, light weight, good chemical stability, and low price. However, polymer materials are usually flammable or combustible, which brings great fire hazards. There have been many economic losses and casualties caused by the burning of polymer materials around the world. Therefore, the flame retardancy of polymer materials Higher and higher demands have been put forward. Although halogen-containing flame retardants can meet the flame-retardant requirements of certain materials, they also have a great impact on the environment because they contain halo...

Claims

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