Methods of producing cross-linked polysaccharide particles

A technology of granules and polysaccharides, which is applied in the field of cross-linked polysaccharides and its preparation, and can solve problems such as yellowing

Active Publication Date: 2011-06-22
RHODIA OPERATIONS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Trimethylamine is an undesired impurity in personal care products due to its fishy odor
Another problem with conventional guar gum is that it can turn yellow which is undesirable, whereas some end formulations require white guar gum

Method used

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  • Methods of producing cross-linked polysaccharide particles
  • Methods of producing cross-linked polysaccharide particles
  • Methods of producing cross-linked polysaccharide particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0108] 1. Ca(OH) 2 Preparation of cross-linked guar gum

[0109]Water, QUAT 188 (3-chloro-2-hydroxypropyltrimethylammonium chloride), sodium hydroxide and guar chips were added to the TR-JE reactor and mixed. The mixture was then heated to 130°F and kept constant at 130°F for 1.5 hours. The guar splits were allowed to cool, washed for 3 minutes in a ratio of 10:1 (water:guar splits), filtered and collected.

[0110] A 25% aqueous solution of calcium hydroxide and deionized water were added to the wet soybean chips and mixed. A 65% solution of Quat 188 was slowly added to the mixture. One or more evacuation steps are performed. The mixture was then heated to 60°C for 1 hour. A 1% dispersion is available.

[0111] These flakes are then ground, usually using a flash mill, and an off-white powder is collected. The following is the feeding amount of sample R0582-164 (JAGUAR-17 type).

[0112] Table 1:

[0113]

[0114] Table 2

[0115]

RxtrGel %M

1W%M ...

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Abstract

A substantially boron-free method for making a cationic guar comprising: reacting particles of polysaccharide with a derivatizing agent to produce derivatized polysaccharide particles, washing the particles, and contacting, prior to or after the step of washing, the particles with a crosslinking agent compound. Also disclosed are methods for making crosslinked derivatized polysaccharides that include contacting particles of a polysaccharide with a first crosslinking agent and / or second cross-linking agent in an aqueous medium under conditions appropriate to intra-particulately crosslink the particles. The first and / or second crosslinking agent can include a copper compound, a magnesium compound, a calcium compound, an aluminum compound, p-benzoquinone, glyoxal, a titanium compound, a dicarboxylic acid, a dicarboxylic acid salt, a phosphite compound or a phosphate compound. The crosslinked polysaccharide of the present invention is especially useful in personal care formulations, especially formulations comprising silicone since it improves silicone deposition.

Description

[0001] Cross references to related patent applications [0002] This patent application claims priority to US Provisional Application No. 61 / 137,400, filed July 30, 2008, which is hereby incorporated by reference in its entirety. Background technique [0003] The present invention relates to crosslinked polysaccharides and methods for their preparation, and in particular, to crosslinked guar gum. [0004] Guar gum is sold in several forms, both derivative and non-derivative forms. Among its derivative forms, there are cationic forms, nonionic forms, anionic forms, and combinations of cationic forms, nonionic forms, and anionic forms. Derived guar splits and guar gums include carboxymethyl guar, hydroxypropyl guar, and hydroxypropyltrimethylammonium guar, which are used in many A commercially available material in the field of application, which is usually produced by the "water-split" process, in which a type of The material of the pea seed is reacted with a derivatizing re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00
CPCC08J3/24A61K2800/54C08B37/0096A61K8/737A61Q5/02C08B37/00C08J3/12C08F251/00
Inventor 克赖格·卢察克卡罗琳·马比勒
Owner RHODIA OPERATIONS SAS
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