| abstract |
Surface active silicone compounds which have an improved stability at a pH above 9 or below 4, have the general formula ##STR1## wherein each R independently represents an alkyl or aryl group, each R' represents an alkylene group preferably separating neighbouring silicon atoms by up to 3 carbon atoms, each R" independently denotes R or, only if a is 0, the group R 3 SiR'--, Z represents a hydrophilic sulphur, nitrogen or phosphor containing substituent or a carboxy-functional group or a salt thereof, and a has the value 0, 1 or 2. |