EP 2723315 A2 20140430 - USE OF SILICONE ELASTOMERS IN COSMETIC PREPARATIONS
Title (en)
USE OF SILICONE ELASTOMERS IN COSMETIC PREPARATIONS
Title (de)
VERWENDUNG VON SILIKONELASTOMEREN IN KOSMETISCHEN ZUBEREITUNGEN
Title (fr)
UTILISATION D'ÉLASTOMÈRES DE SILICONE DANS DES PRÉPARATIONS COSMÉTIQUES
Publication
Application
Priority
- DE 102011078097 A 20110627
- EP 2012061486 W 20120615
Abstract (en)
[origin: WO2013000742A2] The invention relates to the use of a siloxane elastomer gel, which is swollen in a solvent, in cosmetic preparations to prevent microbial attack. Said gel: I) is produced by reacting (A) an =Si-H-containing polysiloxane of formula R3SiO(R'2SiO)a(R''HSiO)bSiR3 and optionally an =Si-H-containing polysiloxane of formula HR2SiO(R'2SiO)cSiR2H or formula HR2SiO(R'2SiO)a(R''HSiO)bSiR2H, where R, R' and R'' = alkyl groups comprising 1 to 6 C atoms, a = 0-250, b = 1-250, and c = 0-250, (B) with an alpha, omega diene of formula CH2=CH(CH2)xCH=CH2, where x = 1-20, said reaction being carried out in the presence of a platinum catalyst and (C) a solvent selected from the group consisting of (i) organic components, (ii) components containing a silicone atom and any mixtures thereof and being carried out until a gel is achieved by cross-linking by the addition of =Si-H to the double bonds of the alpha, omega diene, or; II) has the following structure (AA) where R1 = a C1 to C30 alkyl group, R2 = hydrogen, R3 = a cross-link -E-Y-E-, in which the other end of the cross-link is connected to a second silicone elastomer chain, each E represents a divalent group selected from the groups -CH2-CH2- or -CH=CH- and Y represents a divalent hydrocarbon group, a siloxane or a combination of the two, a = 265-2,000, b = 0-249 and C = 1-250, with the proviso that b+c = 250.
IPC 8 full level
A61K 8/895 (2006.01); A61Q 17/04 (2006.01); A61Q 19/00 (2006.01)
CPC (source: EP)
A61K 8/895 (2013.01); A61Q 17/005 (2013.01); A61K 2800/524 (2013.01)
Citation (search report)
See references of WO 2013000742A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102011078097 A1 20121227; EP 2723315 A2 20140430; WO 2013000742 A2 20130103; WO 2013000742 A3 20131205
DOCDB simple family (application)
DE 102011078097 A 20110627; EP 12727668 A 20120615; EP 2012061486 W 20120615