PREPARATION PROCESS AND PRODUCT OF DIALKYL PHOSPHINATE - NINGBO INST MATERIALS TECHNOLOGY & ENG CAS

Title:

PREPARATION PROCESS AND PRODUCT OF DIALKYL PHOSPHINATE

Document Type and Number:

WIPO Patent Application WO/2015/149265

Kind Code:

A1

Abstract:

Provided is a preparation process of dialkyl phosphinate, comprising: (1) in a reaction kettle, first adding 0-99% of a total weight of phosphinic acid and/or salt thereof and a solvent; (2) when alkene and an initiator exist in the reaction kettle, continuously adding 1-100% of the total weight of the phosphinic acid and/or the salt thereof into a reaction system, and during an adding process, stopping adding the phosphinic acid and/or the salt thereof when molar content of monoalkyl phosphinic acid and/or salt thereof accounts for 10% or less of total molar content of phosphorus in the reaction system. Also provided is a dialkyl phosphinate flame retardant prepared by means of the preparation process.

Inventors:

YAO QIANG (CN)
ZHAO YUEYING (CN)
TANG TIANBO (CN)
ZHOU KAN (CN)

Application Number:

PCT/CN2014/074507

Publication Date:

October 08, 2015

Filing Date:

April 01, 2014

Export Citation:

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Assignee:

NINGBO INST MATERIALS TECHNOLOGY & ENG CAS (CN)
PRESAFER （QINGYUAN） PHOSPHOR CHEMICAL COMPANY LTD (CN)

International Classes:

C07F9/30; C08K5/5313

Foreign References:

CN103319524A	2013-09-25
CN101891762A	2010-11-24
CN104119377A	2014-10-29

Other References: