Phosphated, oxidized starch and use of same as dispersant in...

C - Chemistry – Metallurgy – 08 – B

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C08B 31/18 (2006.01) B01F 17/00 (2006.01) B41N 3/08 (2006.01) C08B 31/06 (2006.01) C09K 8/20 (2006.01) C11D 3/37 (2006.01) D21H 19/54 (2006.01)

Patent

CA 1308099

PHOSPHATED, OXIDIZED STARCH AND USE OF SAME AS DISPERSANT IN AQUEOUS SOLUTIONS AND COATING FOR LITHOGRAPHY Abstract of the Disclosure A novel phosphated, oxidized starch having a molecular weight of about 1,500 to about 40,000 Daltons, a carboxyl degree of substitution of 0.30 to 0.96, and a phosphate degree of substitution of from about 0.0002 to about 0.0005, which is useful as a dispersant for aqueous, high-solid slurries of minerals and inorganic pigments, as a replacement for gum arabic in gumming and fountain solutions for lithography, and as a drilling fluid additive.

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