Abstract: The invention relates to a process for working up polyethersiloxanes, wherein said polyethersiloxanes are treated with H2O2 and are separated from volatile components by separation methods known per se.

Abstract: The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof.

Abstract: The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof.

Abstract: The invention relates to a process for working up polyethersiloxanes, wherein said polyethersiloxanes are treated with H2O2 and are separated from volatile components by separation methods known per se.

Abstract: The invention relates to a process for working up polysiloxane/polyoxyalkylene block copolymers, wherein said copolymers are subjected to a treatment with superheated steam.

Abstract: A method for the preparation of highly elastic foams of reduced compression hardness and having urethane groups is disclosed, in which the reaction of the polyurethane-forming materials is carried in the presence of 0.01 to 5% by weight, based on the polyol, of a compound, which has at least one polyoxyalkylene group and at least one anionic group in the molecule. The use of fluorocarbons to decrease the compression hardness can reduced appreciably by the use of this compound.

Abstract: The invention relates to polymers and oligomers characterized in that they have been prepared from .alpha.-olefin monomers or mixtures thereof and the distances between the methyl branching paints are controllable by the selection of the .alpha.-olefins and to a process for preparing said novel polymers and oligomers.

Abstract: A method is disclosed for the preparation of flexible polyester polyurethane foam by reaction of at least difunctional polyesterols with at least difunctional organic isocyanates in the presence of catalysts and a stabilizer mixture of organic and organosilicon compounds, water, optionally blowing agents and optionally conventional additives, wherein the stabilizer mixture used comprisesa) a (meth)allyl polyoxyalkylene ether polymer or its copolymer with vinyl monomers andb) a polyoxyethylene-polysiloxane block copolymer,in a ratio by weight of a:b of 1:9 to 9:1. The polyester foam obtained are open celled to a high degree and have an excellent die-cuttability.

Abstract: A method for the preparation of rigid polyurethane and/or polyisocyanurate foams is disclosed. The foams are produced by the reaction of at least difunctional polyisocyanates, a polyol with 3 to 8 hydroxyl groups, said polyol having a hydroxyl number of about 150 to 800, catalysts, blowing agents and foam stabilizers, which are devoid of silicon atoms, as well as, optionally, conventional additives such as flame retardants and chain extenders. The foam stabilizers are copolymers of vinyl monomers and allyl- or methallyl polyoxalkylene ethers. The mole ratio of the monomers is 1:1 to 10:1.The foams thus produced exhibit an improved burning behavior, good surface properties and outstanding thermal insulation effects. The stabilizers increase the solubility of the halocarbon blowing agents in the foaming formulation.

Abstract: The invention relates to polymers and oligomers characterized in that they have been prepared from .alpha.-olefin monomers or mixtures thereof and the distances between the methyl branching points are controllable by the selection of the .alpha.-olefins and to a process for preparing said novel polymers and oligomers.