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Polyorganosiloxane gels having glycoside groups

A polysiloxane gel, polysiloxane technology, which is applied to skin care preparations, cosmetic preparations, pharmaceutical formulations, etc., can solve the problems of high cost and unsatisfactory cosmetic application, and achieve good sensory performance, superior The effect of sliding and good skin feel

Inactive Publication Date: 2016-08-03
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In particular, however, a significant disadvantage of these organopolysiloxane gels is that the resulting skin feel is not ideal for cosmetic applications
This gel is also quite expensive to produce due to the relatively high proportion of vinyl-functionalized MQ resins

Method used

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  • Polyorganosiloxane gels having glycoside groups
  • Polyorganosiloxane gels having glycoside groups
  • Polyorganosiloxane gels having glycoside groups

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-14 and comparative example C1-C6

[0180] According to methods A and B, a series of gels were produced. The properties of the Si—H functionalized crosslinkers used in the examples and comparative examples are shown in Table 1. Crosslinkers 1 and 2 (Table 1) were added in Step H1; Crosslinker 3 (Table 1) was added in Step H2. The substances used, their amounts and the properties of the gels produced are shown in Tables 2 to 5 below.

[0181] Table 1 - Properties of Si-H-containing crosslinkers used in Examples 1-14 and Comparative Examples C1-C6:

[0182] Numbering

Distribution a:(b+c)

sum of a+b

Viscosity (mm 2 / s at 25℃)

%H

1

2:1

138

331

0.47

2

9:1

60

58

0.14

3

55:1

134

321

0.026

[0183] Examples 1-7 are examples of inventive gels in which a crosslinker with very low Si-H group content is used as the sole crosslinker or in combination with additional crosslinkers. The d...

Embodiment 15-21 and comparative example C7-C8

[0220] Examples 15-21 and Comparative Examples C7-C8: Mixtures containing water

[0221] Aqueous mixtures were produced using the inventive organopolysiloxane gels according to Examples 1-4 and 10, and the gels from Comparative Examples C3 and C6. For this purpose, variable amounts of water are added to the gel. use water The mixer was introduced partially by shear at 1000 rpm and room temperature. Components and results are listed in Tables 6 and 7.

[0222] Examples 15, 16, 18, 20 and 21 show single-phase, homogeneous, stable, milky, translucent mixtures of organopolysiloxane gels of the invention and water. Examples 17 and 19 show saturated mixtures. They are stable, translucent and milky, but individual fine droplets are present on the surface. This is an indication that the network of the organopolysiloxane gel of the invention is saturated with solvent. Now the gel is no longer able to absorb any additional water. Comparative examples C3 and C6 are milky organopo...

Embodiment 22-27 and comparative example C9 and C10

[0230] Examples 22-27 and comparative examples C9 and C10: mixtures containing glycerol

[0231] Glycerol-containing mixtures were produced using the inventive organopolysiloxane gels according to Examples 1-4, 10 and 11, as well as the gels from Comparative Examples C3 and C6. For this purpose, variable amounts of glycerol were added to the gel. Use glycerol The mixer was introduced partially by shear at 1000 rpm and room temperature. Components and results are listed in Table 8.

[0232]Examples 22-27 show single-phase, homogeneous, stable, milky, white mixtures of organopolysiloxane gels of the present invention with glycerol. Comparative examples C3 and C6 are milky organopolysiloxane gels produced without additional use of the compound (1b) according to the invention, ie without glycosidic residues and hydrosilylatable end groups. First they absorb very small amounts, ie less than 5% by weight, of glycerol, and then they separate into two phases (comparative examples...

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Abstract

The invention discloses a polyorganosiloxane gels glycoside groups. The invention relates to novel polyorganosiloxane gels, produced by reacting (1a) unsaturated polyorganosiloxane resins and (1b) compounds having a glycoside group and a terminal group that can be hydrosilylated, with (2) Si-H functional polyorganosiloxanes of general formula: HcR3-cSiO(R2SiO)a(RHSiO)bSiR3-cHc, where c represents 0 or 1, R can be identical or different and stands for a monovalent, optionally substituted hydrocarbon group comprising 1 to 8 carbon atoms per group, a and b are whole numbers, with the proviso that the sum of a+b is from 66 to 248, that the polyorganosiloxanes (2) contain Si-bonded hydrogen in amounts of between 0.011 and 0.044 wt. % and that the number of Si-H groups per molecule is on average greater than 2 and less than 5, or by reacting mixtures of (2) Si-H functional polyorganosiloxanes (2') with Si-H functional polyorganosiloxanes of general formula: HcR3-cSiO(R2SiO)a(RHSiO)bSiR3-cHc, where R and c have the definitions given above, a and b are whole numbers, with the proviso that the sum of a+b is from 8 to 248, that the polyorganosiloxanes (2') contain Si-bonded hydrogen in amounts of between 0.045 and 0.35 wt. %, preferably between 0.045 and 0.156 wt. %, in the presence of (3) the attachment of Si-bonded hydrogen to catalysts that promote aliphatic multiple bonds, wherein (1a), (1b) and (2) or mixtures of (2) and (2') are dispersed in (4) diluents, preferable polyorganosiloxanes with 2 to 200 Si-atoms, or in organic diluents.

Description

technical field [0001] The present invention relates to organopolysiloxane gels having glycoside residues (glycoside residues), a process for their production and their use in cosmetic preparations. Background technique [0002] Organopolysiloxanes can be produced by crosslinking unsaturated organopolysiloxane resins with Si-H containing organopolysiloxanes, also known as Si-H functional crosslinkers, in the presence of diluents gel. [0003] Crosslinks are connections between polymer chains in a three-dimensional network. They can be considered as long chain branches so numerous that they form a continuous insoluble network or gel. [0004] Organopolysiloxane networks are often produced by platinum-catalyzed hydrosilylation reactions. These often involve the reaction of Si—H-containing organopolysiloxanes with vinyl-functional organopolysiloxanes. An essential prerequisite for the formation of a three-dimensional network here is that the two components, at least one of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/14C08L83/04
CPCC08G77/12C08G77/20C08L83/04C08K5/1545C08K5/56C08L83/00C08G77/14C08J3/075C08J2300/14A61K8/042A61K8/891A61Q19/00C08G77/08C08G2210/00
Inventor 塞巴斯蒂安·克内
Owner WACKER CHEM GMBH
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