POLYSACCHARIDE DERIVATIVES AND HYDRAULIC COMPOSITIONS

Title:

POLYSACCHARIDE DERIVATIVES AND HYDRAULIC COMPOSITIONS

Document Type and Number:

WIPO Patent Application WO/1998/023647

Kind Code:

A1

Abstract:

Polysaccharide derivatives in which some or all of the hydroxyl groups have been substituted by hydrophobic substituent(s) (A) having as the partial structure a C�8-43? hydrocarbon group, and ionic hydrophilic substituent(s) (B) having as the partial structure at least one group selected from the group consisting of sulfonate, carboxyl, phosphate and sulfate groups and salts thereof, which have an average degree of substitution per constituting monosaccharide residue by the substituent (A), determined by Zeisel's method or the diazomethane method, of at least 0.0001 but less than 0.001 and an average degree of substitution per constituting monosaccharide residue by the substituent (B), determined by the colloidal titration method, of from 0.01 to 2.0. These derivatives are useful as chemical admixtures for hydraulic materials and give hydraulic compositions excellent in dispersibility and stability.

Inventors:

YAMAMURO HOTAKA (JP)
IHARA TAKESHI (JP)
KITSUKI TOMOHITO (JP)
MIYAJIMA TETSUYA (JP)
YAMATO FUJIO (JP)
KOHAMA MAKOTO (JP)

Application Number:

PCT/JP1997/004316

Publication Date:

June 04, 1998

Filing Date:

November 26, 1997

Export Citation:

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Assignee:

KAO CORP (JP)
YAMAMURO HOTAKA (JP)
IHARA TAKESHI (JP)
KITSUKI TOMOHITO (JP)
MIYAJIMA TETSUYA (JP)
YAMATO FUJIO (JP)
KOHAMA MAKOTO (JP)

International Classes:

C04B24/16; C04B24/24; C04B24/38; C04B28/02; C04B28/14; C08B11/04; C08B11/12; C08B11/193; C08B13/00; C08B31/12; C08B37/00; C12N1/21; (IPC1-7): C08B11/04; C08B11/12; C08B31/12; C08B37/00; C04B24/38; C04B28/02; C04B28/14

Foreign References:

JPS625441B2	1987-02-05
JPH0585790A	1993-04-06

Other References: