Abstract: Cosmetic preparations including one or more active ingredients in a microencapsulation whose encapsulation material is permeable and/or degraded in the pH range of the skin, wherein the core material is free from porous materials are provided.

Abstract: Process for the preparation of copolymeric polypeptides, which comprises, in a first stage, reacting glutamic acid and/or derivatives thereof with amines in the absence of solvents and catalysts, under condensation conditions and, in a second stage, adding one or more further amino acids and/or derivatives thereof and/or one or more identical and/or further amines simultaneously or in any desired order, and reacting them with the reaction product of the first stage in the absence of solvents and catalysts.

Abstract: Process for the preparation of polyaspartic acid derivatives of the general formula (I) 1

Abstract: Cosmetic or pharmaceutical oil-in-water emulsions which include one or more hydrophobically modified copolymeric polyglutamic acid derivatives; and auxiliaries and additives are provided. The copolymeric polyglutamic acid derivatives used are compounds which are prepared by simultaneous or stepwise reaction of glutamic acid and at least one further &agr;-amino acid and/or derivatives thereof and amines, in the absence of solvents and catalysts.

Abstract: Process for the preparation of copolymeric polypeptides, which comprises, in a first stage, reacting glutamic acid and/or derivatives thereof with amines in the absence of solvents and catalysts, under condensation conditions and, in a second stage, adding one or more further amino acids and/or derivatives thereof and/or one or more identical and/or further amines simultaneously or in any desired order, and reacting them with the reaction product of the first stage in the absence of solvents and catalysts.

Abstract: Polyacrylates having an average molecular weight of from about 1000 to about 10,000 and the general formula where R4 is the radical of a known chain regulator or initiator, R1 is identical or different and is an alkyl radical, preferably of 1 to 4 carbon atoms, R2 is identical or different and is a saturated or unsaturated alkyl radical of 12 to 22 carbon atoms, R3 is a hydrocarbon radical which carries at least one (meth)acryloxy group, a is from 10 to 50, b is from 3 to 20, c is from 0 to 10, and the ratio a:b+c is from 0.25 to 4 and the ratio b:c is from 1:0 to 1:0.7 as degassing agents for paints and coatings.