Polyorganosiloxane gels having glycoside groups

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 ...

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

Images