HYDROPHILIC POLYSILOXANE COMPOSITIONS CONTAINING CARBINOL GROUPS

摘要

Preparation and use of organopolysiloxanes having carbinol groups that are bonded to the silicon atom through carbamate-containing groups. These hydrophilic polysiloxanes can be made to completely dissolve in water or behave as amphoteric surfactants by controlling the concentration of the carbinol radicals and the molecular weight of the polysiloxane.

主权项

1. Carbinol-functional siloxane copolymers having the general formula:where x and y are integers equal or greater than zero, R1 is a monovalent hydrocarbon alkyl radical selected from the group consisting of methyl, ethyl, and propyl, aryl radicals selected from the group consisting of phenyl, tolyl, and xylyl, and aralkyl radicals selected from the group consisting of benzyl and phenethyl, where the group ROH is a carbinol radical having the general formula:where R and R* are monovalent hydrocarbon alkylene radicals selected from the group consisting of ethylene, propylene, butylene, isobutylene, and methylpropylene,
R′ is selected from R1 or ROH and if both x and y are zero than R′ can only be equal to ROH.