Building additives based on purified hydroxyalkyl guar

Details Building additives based on purified hydroxyalkyl guar Building additives based on purified hydroxyalkyl guar

2008-07-08

2008-07-08

Jiang, Shaojia Anna (Department: 1623)

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

Organic compounds

Carbohydrates or derivatives

C536S123100

Reexamination Certificate

active

07396924

ABSTRACT:
The present invention relates to highly hydroxyalkylated, glyoxal crosslinked, purified hydroxyalkyl guar useful as additive in the building industry, and to a method for its preparation.

REFERENCES:
patent: 3350386 (1967-10-01), Engelskirchen et al.
patent: 4028127 (1977-06-01), Maske et al.
patent: 5082579 (1992-01-01), Dawson
patent: 0323627 (1988-12-01), None
U.S. Appl. No. 10/543,068, filed Nov. 2006, Rinaldi et al.
U.S. Appl. No. 10/508,274, filed Aug. 2005, Rinaldi et al.
Farid Hamedi Sangsari et al.;Competitive hemiacetalization and acetalization: corss-linking of cellulose by glyoxalRecl. Trav. Chim. Pays-Bas 109, (1990) pp. 419-424.

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