Abstract: The invention relates to a polyether-polysiloxane copolymer that is a gradient copolymer; a two-component (2K) composition comprising at least one component (I) and at least one component (II), wherein component (I) comprises at least one compound having at least one hydroxyl group-reactive functionality, and component (II) comprises a hydroxyl-functionalized polyether-polysiloxane copolymer according to the invention; methods for producing a polyether-polysiloxane copolymer according to the invention, wherein a mixture of at least one alkylene oxide and at least one siloxane is polymerized in the presence of a Double Metal Cyanide (DMC) catalyst and use of the polyether-polysiloxane copolymer according to the invention, a two-component (2K) composition according to the invention or copolymers obtainable by a method of according to the invention as a reactive component for coating, sealant or adhesive compositions based on active hydrogen reactive compounds.

Abstract: The present invention relates to a method for dyeing keratinous material, in particular human hair, comprising the following steps in the specified order: (1) providing a dye (F), wherein the dye (F) in relation to the total weight of the dye (F) contains: (F1) one or more organic C1-C6 alkoxy silanes and/or condensation products thereof, (F2) at least one pigment, (F3) less than 25.0 wt. % water, and (F4) at least one solvent different from water, (2) administering the dye (F) to moistened or dry keratinous material, (3) optionally applying a defined amount of water to the keratinous material, which is still loaded with the dye (F), wherein the weight of the amount of water applied in step (3) is at most twice the weight of the dye (F) administered in step (2), and (4) drying the keratinous material without washing out the dye (F) beforehand.

Abstract: The invention relates to a process for preparing polyorganosiloxanes by (i) condensation polymerization of at least one linear organosiloxane which has at least one hydroxy group or hydrolysable group bound to a silicon atom, (ii) ring-opening polymerization of at least one cyclosiloxane, or (iii) ring-opening polymerization and condensation polymerization of a mixture of at least one linear organosiloxane which has at least one hydroxy group or hydrolysable group bound to a silicon atom and at least one cyclosiloxane with a basic initiator and a hydroxy group-containing compound in the presence of a polar aprotic solvent, wherein the obtained polyorganosiloxanes are not miscible in the polar aprotic solvent at room temperature.

Abstract: The invention relates to a process for preparing polyorganosiloxanes by (i) condensation polymerization of at least one linear organosiloxane which has at least one hydroxy group or hydrolysable group bound to a silicon atom, (ii) ring-opening polymerization of at least one cyclosiloxane, or (iii) ring-opening polymerization and condensation polymerization of a mixture of at least one linear organosiloxane which has at least one hydroxy group or hydrolysable group bound to a silicon atom and at least one cyclosiloxane with a basic initiator and a hydroxy group-containing compound in the presence of a polar aprotic solvent, wherein the obtained polyorganosiloxanes are not miscible in the polar aprotic solvent at room temperature.