Cosmetic or pharmaceutical preparations
AssigneeTh. Goldschmidt AG
InventorsBurghard Gruning, Christian Weitemeyer
Life of this patent
Estimating the term…
Abstract
Cosmetic or pharmaceutical preparations, which contain natural or synthetic oils having ester groups or mineral oils, are characterized by containing a selected organopolysiloxanes with long-chain alkyl or alkoxy groups for improving the spreading behavior of the oils, particularly on the human skin. The organopolysiloxanes are added to the oil in amounts of 0.003 to 20% by weight, based on the total weight of oil and organopolysiloxane.
Claims4
Cosmetic or pharmaceutical preparation containing oils selected from the group consisting of of ester oils, animal oils, vegetable oils, mineral oils and fats and exhibiting an improved spreading behavior, comprising organopolysiloxane of the formula ##STR13## wherein R.sup.1 is the same or different and represents alkyl groups with 1 to 4 carbon atoms, with the proviso that at least 90% of the R.sup.1 groups are methyl groups,
- R.sup.2 is the same or different and
- (1) can be linear or branched alkyl groups 8 to 30 carbon atoms, wherein the alkyl groups can be interrupted by an oxygen atom, or
- (2) can be linear or branched alkoxy groups with 8 to 30 carbon atoms, wherein the alkyl group of the alkoxy groups can be interrupted by an oxygen atom,
- R.sup.3 represents the R.sup.1 or the R.sup.2 group,
- a has a value of 5 to 80,
- b as a value of 0 to 20, and
- c has a value of 0 to 5,
- in an amount of about between 0.003 and 20% by weight based on the total weight of oil and organopolysiloxane with the proviso that
- (i) in an average molecule at least two R.sup.2 groups are present and are as defined in (1), (2), or both above,
- (ii) a>b and the sum of the units with the subscript a>10, and
- (iii) the organopolysiloxane is homogeneously miscible with the
- oil in a concentration of 0.01 to 20% by weight.
Dependencies are inferred from the claim text.