Starch compositions and the use thereof in wet-end of paper...

Details Starch compositions and the use thereof in wet-end of paper... Starch compositions and the use thereof in wet-end of paper...

2006-04-04

2006-04-04

Brunsman, David (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

C106S208100

Reexamination Certificate

active

07022174

ABSTRACT:
The present invention relates to compositions of starch. The compositions consist of an anionic and a cationic starch wherein at least one of the starches is waxy. The compositions are surprisingly not resulting in an agglomerated product when cooked. The compositions are used in paper or cardboard preparation. The compositions are cooked and added at the wet end of the paper production process. This results in a high possible addition level and the use of the size press is abolished. The resulting paper and board are shown to have better characteristics than the paper and board prepared with the same components which have not been mixed prior to addition but which are added separately.

REFERENCES:
patent: 6413372 (2002-07-01), Maliczyszyn et al.
patent: 2003/0173045 (2003-09-01), Confalone et al.
patent: 19739305 (1999-01-01), None
patent: 0 257 338 (1988-03-01), None
patent: 5230792 (1993-09-01), None
patent: 8296193 (1996-11-01), None
patent: WO 99/64677 (1999-12-01), None

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