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Quaternized Cellulose Ethers for Personal Care Products

A personal care, cellulose ether technology, applied in skin care preparations, hair care, cosmetic preparations, etc., can solve the problems of reduced foaming, poor viscosity maintenance, poor thickening efficiency, etc.

Active Publication Date: 2011-12-28
UNION CARBIDE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Known polymeric thickeners often exhibit poor thickening efficiency or poor surfactant compatibility, while associative thickeners, while not having these disadvantages, show spreading Undesirable properties such as reduced spreadability, poor viscosity maintenance at high temperature and reduced lather / foam

Method used

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  • Quaternized Cellulose Ethers for Personal Care Products
  • Quaternized Cellulose Ethers for Personal Care Products
  • Quaternized Cellulose Ethers for Personal Care Products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The quaternized cellulose ethers of the present invention are obtained in combination with the various components listed in Table 1 below:

[0033] Table 1

[0034]

batch 1

batch 2

batch 3

(Compared)

batch 4

batch 5

(Compared)

batch 6

batch 7

HEC 1

60

--

--

--

--

--

--

HEC 2

--

80

40

--

300

40 *

80

HEC 3

--

--

--

60

--

--

--

acetone

360

480

240

--

--

--

460

6% isopropyl alcohol (IPA) in water

--

--

--

--

1805

--

--

0% IPA in water

--

--

--

--

--

241

--

2% IPA in water

--

--

--

360

--

--

--

25% by weight sodium hydroxide (NaOH)

...

Embodiment 2

[0044] Following essentially the protocol of Example 1, the batches listed in Table 1 were prepared and characterized. The results are listed in Table 2:

[0045] Table 2

[0046]

[0047]Compounds of batches 1-7 may be represented by formula (II) above, wherein n is about 500-2000, x is selected such that the hydroxyethyl substitution M.S. is about 2.0 to 2.4, and y and z are selected such that the batch Subcompounds have the nitrogen percentages and levels of hydrophobic substitution (HS) listed in Table 2. Nitrogen content, %N: average weight percentage of nitrogen per anhydroglucose repeating unit determined by titration using an automated Buchi Kieldahl distillation unit and by an automated titrimeter. The average number of moles of hydrophobic substituents per mole of anhydroglucose units is expressed as hydrophobic substitution (HS). Using nuclear magnetic resonance ( 1 H-NMR, 400 MHz, using sodium trimethylsilyl propionate as a standard and heavy water as...

Embodiment 3

[0049] The personal care composition of the present invention comprises the quaternized cellulose ether from Example 1 with the components listed in Table 3:

[0050] table 3

[0051] Batch A

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PUM

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Abstract

The invention describes the daily ammonium cellulose ether suitable for personal care products.

Description

technical field [0001] The present invention relates to quaternized cellulose ethers suitable for rheological modification of personal care products. Background technique [0002] Typically, rheology modifiers are used to adjust the rheological properties of the composition (including viscosity, flow rate, stability of viscosity over time or with increasing temperature, and the ability of the composition to suspend particles). For personal care products, the rheology of the formulation can have a significant impact on the consumer's perception of the product. Known polymeric thickeners often exhibit poor thickening efficiency or poor surfactant compatibility, while associative thickeners, while not having these disadvantages, show spreading Undesirable properties such as reduced spreadability, poor viscosity maintenance at high temperatures and reduced lather / foam. [0003] Accordingly, there is a continuing need for new rheology modifiers that are effective in thickening ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/23A61K8/60A61K8/73
CPCA61K2800/5426A61K8/463A61K8/442A61Q19/00A61K8/604A61K8/731A61Q5/10A61P9/10A61K8/23A61K8/60A61K8/73A61Q19/10
Inventor 张晓东爱德华·F·黛安托尼奥拉塞尔·L·克里格温·K·李塔蒂亚娜·V·德罗维特斯卡亚
Owner UNION CARBIDE CORP
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