Oxyalkylated polysiloxanes, their preparation and their use as heat sensitisers

Oxalkylierte Polysiloxane, deren Herstellung durch Umsetzung von Polyepoxypolysiloxanen mit Polyalkylenglykolmonoäthern in Gegenwart von sauren Katalysatoren sowie deren Verwendung als Wärmesensibilisierungsmittel für Kautschuklatices. 1. Hydroxyalkylated polysiloxanes of the general formula see diagramm : EP0002519,P10,F1 in which R1 , R2 and R3 denote, independently of each other, an alkyl and aryl radical with 1 to 10 C atoms, optionally substituted by halogen, R4 represents hydrogen or an alkyl or aryl radical with 1 to 10 C atoms, optionally substituted by halogen, n represents a number from 1 to 50 and m represents a number from 0 to 50 and X represents the radical see diagramm : EP0002519,P10,F2 P denotes a number from 1 to 8 and q denotes zero or the number 1, Y represents see diagramm : EP0002519,P10,F3 R5 represents an alkyl radical of a lower alcohol, x and y denotes the numbers 5 to 100, characterized in that the radical see diagramm : EP0002519,P10,F4 is able to be prepared by the reaction of a lower alcohol R5 OH first of all with a mixture of propylene oxide and 80-90 % of the total quantity of the ethylene oxide and then with the remaining 10-20 % of the ethylene oxide.