Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1998-03-24
1999-07-13
Fonda, Kathleen K.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
2521861, 2521881, C08B 3708, A62D 300, D21C 910
Patent
active
059228512
ABSTRACT:
Phosophonomethylated chitosans containing repeating units of formula ##STR1## wherein R.sub.1 is hydrogen or a radical of formula ##STR2## R.sub.2 is a radical of formula (1a), X.sub.1 and X.sub.2 are each independently of the other hydrogen, C.sub.1 -C.sub.5 alkyl or an alkali metal ion or ammonium ion and n is 50 to 4000, have versatile utilities as sequestrants, stabilizers for bleaching agents as well as humectants in cosmetic compositions.
REFERENCES:
patent: 3288846 (1966-11-01), Irani et al.
patent: 3879376 (1975-04-01), Vanlerberghe
patent: 5646271 (1997-07-01), Stehlin et al.
Redmore, J. Org. Chem., vol. 43, No. 5, (1978), month not available.
Kuhn Martin
Maier Thomas
Stehlin Albert
Ciba Specialty Chemicals Corporation
Fonda Kathleen K.
Mansfield Kevin T.
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