Process for the manufacture of absorbent, modified starch ethers

Details Process for the manufacture of absorbent, modified starch ethers Process for the manufacture of absorbent, modified starch ethers

1977-07-28

1978-09-26

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

128284, 128290P, 536106, 536111, C08B 3108

Patent

active

041172221

ABSTRACT:
This invention relates to an improvement in the process for the manufacture of modified starch ethers in which, prior to, during, or after etherification, a reaction with a modifying agent is conducted in a wet alkaline medium, the improvement comprising that, if etherification were the only reaction conducted, an at least preponderantly water-soluble starch ether would be formed, and the modification results in an absorbent modified starch ether more than 40 per cent by weight of which is insoluble in water.

REFERENCES:
patent: 3077468 (1963-02-01), Geurden
patent: 3208994 (1965-09-01), Flodin
patent: 3542759 (1970-11-01), Gelotte et al.
patent: 3622562 (1971-11-01), Muetgeert
patent: 3849387 (1974-11-01), Fowells et al.
patent: 3936441 (1976-02-01), Holst et al.
patent: 3965091 (1976-06-01), Holst et al.
Chemical Abstracts, vol. 83, No. 12, Sep. 22, 1975, p. 99556j.

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