Process for the production of cationic starch ethers

Details Process for the production of cationic starch ethers Process for the production of cationic starch ethers

1980-12-08

1982-06-01

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536111, C08B 3108, C08B 3112

Patent

active

043329357

ABSTRACT:
The known process for the production of cationic starch ethers by the reaction of starch with cationic etherifying agents in the presence of water in an alkaline medium is improved by reacting the starch at a temperature of about 50.degree. to 120.degree. C. with an alkylidene epoxide which has a tertiary amino group or quaternary ammonium group in a medium which contains about 10 to 35 weight percent water and about 0.2 to 2.0 weight percent calcium hydroxide or calcium oxide. There are produced in short reaction times yields not previously attainable.

REFERENCES:
patent: 2876217 (1959-03-01), Paschall
patent: 3243426 (1966-03-01), Caesar
patent: 3346563 (1967-10-01), Shildneck
patent: 3422087 (1969-01-01), Caesar
patent: 3448101 (1969-06-01), Billy
patent: 3637656 (1972-01-01), Germino et al.
patent: 3721575 (1973-03-01), Jarowenko
patent: 4127563 (1978-11-01), Rankin et al.

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