Process for preparation of lithium N-methylamino butyrate

Details Process for preparation of lithium N-methylamino butyrate Process for preparation of lithium N-methylamino butyrate

1993-07-08

1994-09-06

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C07C20500

Patent

active

053449738

ABSTRACT:
A novel process for preparing lithium N-methylaminobutyrate, which is useful for preparation of poly(arylene sulfide) such as poly(phenylene sulfide). The process comprises reacting N-methyl-2-pyrrolidone with a hydroxide of an alkali metal other than lithium in an aprotic organic solvent, reacting the resulting reaction product mixture with lithium chloride after removing water therefrom and removing the alkali metal chloride formed as a by-product. According to this process, lithium N-methylaminobutyrate lithium free from alkali metal other than lithium, is easily prepared, which is easily recovered and recycled in the production of said polymers.

REFERENCES:
patent: 3867356 (1975-02-01), Campbell
patent: 4324886 (1982-04-01), Edmonds
patent: 4371706 (1983-01-01), Edmonds
patent: 4529818 (1985-07-01), Nesheiwat

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