Title:
WATER ABSORBING STARCH COPOLYMER
Document Type and Number:
Japanese Patent JPS548694
Kind Code:
A
Abstract:
Water-absorbent, starch copolymerisates which comprise a non-linear lattice of starch chains linked together by polymeric linkages represented by the formula wherein Starch represents a starch chain of D-glucose units, Z represents an organo group which links the group to the carbon atom of the starch chain by a sulphur or an oxygen atom, R is hydrogen or a monovalent organic radical, M represents a plurality of copolymerised ethylenically unsaturated monomers with "p" representing the number of copolymerised monomeric units in the linkage, (W) is a water-attractant group linked to the polymeric linkage and "n" represents the number of (W) moieties contained within the polymeric linkage of the copolymerised monomers with the number of (W) moieties being sufficient to impart water-absorbency properties to the copolymerisate. The water-absorbent starch copolymerisate may be easily prepared into a desired configuration for a particular end-use or combined with other substrates or carriers. The unpolymerised starch and monomers or precursors thereof may be applied or incorporated into a suitable carrier or substrate and copolymerised in situ to provide a composite article of unitary construction with the water-absorbent starch copolymerisate permanently bonded or affixed thereto.
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Inventors:
OOSUTEIN HARII YANGU
FURANKU BAABANATSUKU
FURANKU BAABANATSUKU
Application Number:
JP7482378A
Publication Date:
January 23, 1979
Filing Date:
June 20, 1978
Export Citation:
Assignee:
STALEY MFG CO A E
International Classes:
C08F251/00; C08F299/00; C08F290/00; (IPC1-7): C08F299/02