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A product comprising polysaccharide derivatives

A technology of polysaccharide derivatives and products, which is applied in the preparation of detergent mixture compositions, detergent compositions, surface-active detergent compositions, etc., and can solve problems such as reducing rheological stability

Active Publication Date: 2021-01-29
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some applications carboxymethylcellulose derivatives may have reduced rheological stability

Method used

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  • A product comprising polysaccharide derivatives
  • A product comprising polysaccharide derivatives
  • A product comprising polysaccharide derivatives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0253] Reaction of Poly α-1,6-Glucan with Sodium Vinyl Sulfonate

[0254] This example describes poly alpha-1,6 glucan functionalized with ethanesulfonic acid groups. In a 1 L round bottom flask equipped with an overhead stirrer, addition funnel, and nitrogen inlet, poly alpha-1,6 glucan (20 g), prepared as described above, was suspended in 200 mL of isopropanol. Sodium vinylsulfonate (187 mL of a 25% by weight solution) was added thereto, and the mixture was stirred for 10 minutes. 59 g of 50% by weight sodium hydroxide were added thereto. The mixture was stirred at room temperature for 1 hour. The mixture was then heated to 80°C with stirring for 5 hours. The mixture was cooled to room temperature and neutralized with 18.5 wt% HCl. The product was purified by ultrafiltration (MWCO 5 kDa, PES membrane). The degree of substitution is 1.0, as determined by 1 Measured by H NMR analysis.

Embodiment 2

[0256] Reaction of poly α-1,6-glucan with 1,3-propane sultone :

[0257] This example describes poly alpha-1,6 glucan functionalized with propanesulfonic acid groups. Poly alpha-1,6 glucan (20 g), prepared as described above, was dissolved in 50 mL of distilled deionized water in a 1 L round bottom flask equipped with an overhead stirrer, addition funnel, and nitrogen inlet. Cool the mixture with an ice / water bath. To this was added 9.9 g of a 50% by weight hydroxide solution via an addition funnel under a nitrogen purge. After the addition, the mixture was further stirred on ice / water for 30 minutes. 14.6 g of 1,3-propane sultone was added thereto. The mixture was heated at 45°C-50°C under nitrogen for 3 hours. The mixture was cooled and neutralized with 18.5 wt% HCl. The product was purified by ultrafiltration (MWCO 5K, PES membrane, 3X). The degree of substitution is 0.3, as determined by 1 Measured by HNMR analysis.

Embodiment 3

[0259] Reaction of poly α-1,6-glucan with 1,4-butane sultone :

[0260] This example describes poly alpha-1,6 glucan functionalized with butanesulfonic acid groups. In a 1 L round bottom flask equipped with an overhead stirrer, addition funnel, and nitrogen inlet, poly alpha-1,6 glucan (20 g), prepared as described above, was dissolved with 50 mL of distilled deionized water. Cool the mixture with an ice / water bath. To this was added 7.4 g of a 50% by weight hydroxide solution via an addition funnel under a nitrogen purge. After the addition, the mixture was further stirred on ice / water for 30 minutes. 16 g of 1,4-butane sultone was added thereto. The mixture was heated at 40°C-45°C under nitrogen for 2 days. The mixture was cooled and neutralized with 18.5 wt% HCl. The polymer was purified by ultrafiltration (MWCO 5K, PES membrane, 3X). The degree of substitution is 0.8, as determined by 1 Measured by H NMR analysis.

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Abstract

The disclosure relates to products comprising a polysaccharide derivative wherein the polysaccharide derivative comprises a polysaccharide substituted with at least one of: a) at least one sulfate group; b) at least one sulfonate group; c) at least one thiosulfate group; or d) a combination thereof; wherein the polysaccharide is poly alpha-1,3-glucan, poly alpha-1,6-glucan, poly alpha-1,3-1,6-glucan, or a mixture thereof; and the polysaccharide derivative has a degree of substitution of about 0.001 to about 3. The products can be useful as anti-deposition and / or anti-graying agents in laundrydetergents, and in home care applications.

Description

technical field [0001] The present disclosure relates to a product comprising a polysaccharide derivative comprising a polysaccharide substituted with at least one sulfate group, at least one sulfonic acid group, at least one thiosulfate group, or a combination thereof. Background technique [0002] Polysaccharides modified with functional groups capable of carrying charges (ie salts of cationic or anionic functional groups) are known. Such modified polysaccharides have been used to provide enhanced solubility in a variety of aqueous applications such as rheology modifiers, emulsion stabilizers and Dispersant. In particular, carboxymethylcellulose derivatives have been used as rheology modifiers. However, carboxymethylcellulose derivatives may have reduced rheological stability in some applications. Sulfonated or sulfated derivatives may offer some advantages over carboxylate derivatives due to their improved rheological stability to ionic strength and pH. It is believed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00C08B37/02C11D3/22
CPCC08B37/009C08B37/0021C11D3/228C11D3/0036C08B37/0009C11D1/26C11D3/0015C11D3/38618C11D3/38627C11D3/38645C11D17/043C08L5/04C11D2111/12
Inventor 马克·罗伯特·西维奇黄铮铮海伦·S M·陆拉凯什·南比亚尔杰米·L·鲍林
Owner THE PROCTER & GAMBLE COMPANY
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