Polysaccharide based gel

Details Polysaccharide based gel Polysaccharide based gel

2007-04-24

2007-04-24

Padmanabhan, Sreeni (Department: 1617)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Carbohydrate doai

C424S434000, C424S439000, C424S488000, C424S500000, C426S573000

Reexamination Certificate

active

10311383

ABSTRACT:
A fluid gel obtainable by a process which comprises subjecting a solution comprising a mixture of xanthan and one or more non-gelling polysaccharides selected from galactomannans or glucomannans in a solvent to shear while cooling the solution from a temperature above the gelation temperature of the mixture, and recovering the resulting continuous gel. The gel is useful in cosmetic and pharmaceutical compositions where it may, for instance, be generated in situ.

REFERENCES:
patent: 3557016 (1971-01-01), Schuppner
patent: 3804951 (1974-04-01), Rapp et al.
patent: 4676976 (1987-06-01), Toba et al.
patent: 6537318 (2003-03-01), Ita et al.
patent: 6719967 (2004-04-01), Brown et al.
patent: 0602990 (1994-06-01), None
patent: 97/18263 (1997-05-01), None
Goycoolea, F., “Screening for synergistic interactions in dilute polysaccharide solutions”, Carbohydrate Polymers 28 (1995) 351-358, pp. 351-358.
Rinaudo et al.; “Physical Properties of Xanthan, Galactomannan and Their Mixtures in Aqueous Solutions”;Macromolecular Symposia; vol. 140, May 1999; pp. 115-124 (XP000866710).

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