Preparation of glycol carboxyethylmethylphosphinate

Details Preparation of glycol carboxyethylmethylphosphinate Preparation of glycol carboxyethylmethylphosphinate

2005-02-15

2005-02-15

Sanders, Kriellion A. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C558S110000, C528S308000, C528S308100, C528S308200, C528S337000, C528S400000, C252S609000

Reexamination Certificate

active

06855757

ABSTRACT:
The invention relates to a process of preparing glycol carboxyethylmethylphosphinate, which comprisesa) reacting elemental yellow phosphorus with methyl chloride in the presence of an alkali or alkaline earth metal hydroxide to form a mixture which includes the alkali and/or alkaline earth metal salts of methylphosphonous, phosphorous and hypophosphorous acids as main constituents,b) esterifying the methylphosphonous acid from the mixture obtained by a),c) removing the methylphosphonous ester from the mixture,d) adding the thus obtained methylphosphonous ester to an acrylic ester,e) hydrolyzing the diester thus obtained,f) esterifying the resulting carboxyethylmethylphosphinic acid with ethylene glycol directly to the glycol carboxyethylmethylphosphinate.The invention also relates to the use of the glycol carboxyethylmethylphosphinates prepared according to the invention as reactive flame retardants for polymers.

REFERENCES:
patent: 4022826 (1977-05-01), Lohmar et al.
patent: 4062888 (1977-12-01), Ohorodnik et al.
patent: 5399428 (1995-03-01), Asrar
patent: 6090967 (2000-07-01), Horold et al.
patent: 6909968 (2000-07-01), Horold et al.
patent: 25 29 731 (1976-12-01), None
patent: 25 40 283 (1977-03-01), None
patent: 39 40 713 (1991-06-01), None
patent: 0 432 620 (1991-06-01), None
patent: 0 969 008 (2000-01-01), None
patent: 0 969 009 (2000-01-01), None
patent: 1 517 865 (1978-07-01), None
English abstract for DE 3940713, Jun. 13, 1991.
Khairullin, T.I., et al., Zh Obshch. Khim., 37, (1967), pp. 710-714.
Houben-Weyl, vol. 12/1, pp. 230-232, 1963.
Houben-Weyl, vol. 12/1, pp. 258-259, 1963.
Houben-Weyl, vol. 12/1, pp. 306, 1963.

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