Cationic starch composition and process for making same

Details Cationic starch composition and process for making same Cationic starch composition and process for making same

1995-06-06

1997-07-29

Nutter, Nathan M.

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

Organic compounds

Carbohydrates or derivatives

536 48, 536 49, 536 50, 536 55, 536 551, 536 553, C11D 754

Patent

active

056523602

ABSTRACT:
Disclosed herein is a new cationic starch and cationic starch paste or slurry. The starch paste or slurry has a low cation equivalent value despite its high nitrogen content and also has a low solution viscosity despite its high molecular weight. The cationic starch and cationic starch paste or slurry is formed by substitution with a one or both of quaternary ammonium salt or a tertiary amino group, characterized in that its nitrogen content (X) due to the quaternary ammonium salt and/or tertiary amino group is related to its cation equivalent value (Y) as defined below:

REFERENCES:
patent: 2876217 (1959-03-01), Paschall
patent: 3422087 (1969-01-01), Caesar
patent: 4421566 (1983-12-01), Hasuly et al.
Mar. 1990 Tappi Journal, "Using Cationic Starch in Filled Papers" (pp. 191-193), by Alince et al.
Starch/Starke, 43 Nr. 3, "The Cationic Distribution in a Cationised Potato Starch" (pp. 81-82), by Salomonsson et al.
Starch/Starke, 42 (1990) Nr. 2, "The Effect of Different Methods of Cationisation on the Starch Granule and Its Gelatinisation Product" (pp. 64-68), by Vihervaara et al.
Starch/Starke, 39 (1987) Nr. 11, "Die Molekulare Charakterisierung von Hydrolytisch Abgebauten Starken Mittels Hochleistungs-GPC-Analyse" (pp. 397-402), Praznik et al (no English translation available).
Starch/Starke, 41 (1989) Nr. 1, "The Benefits of Cationic Starches for the Paper Industry" (pp. 27-31), Nachtergaele et al.

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