Starches modified with amino-multicarboxylates

Details Starches modified with amino-multicarboxylates Starches modified with amino-multicarboxylates

C - Chemistry, Metallurgy

08

B

C08B 31/12 (2006.01) C07C 229/04 (2006.01) C07C 229/16 (2006.01) C07C 229/24 (2006.01) D21H 17/28 (2006.01) D21H 17/55 (2006.01) D21H 17/74 (1995.01)

Patent

CA 2141826

Amino-multicarboxylate starch ether derivatives are provided having the following structure: Image - or - Image wherein St-O represents a starch molecule, R is H or CH3; R' is H, CH3 or COOH; M is a cation; n is 2 or 3; and R" is H or alkyl of 1 to 18 carbon atoms. These starch derivatives are particularly useful as retention and strength aids in papermaking.

L'invention porte sur des dérivés éther-oxyde d'amidon amino-multicarboxylate, possédant la structure Image ou Image , où : St-O représente une molécule d'amidon; R est H ou CH3; R' est H, CH3 ou COOH; M est un cation; n est 2 ou 3; R" est H ou un alkyle de 1 à 18 atomes de carbone. Ces dérivés d'amidon sont particulièrement utiles comme agents de rétention et de renforcement dans la fabrication du papier.

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