| 摘要 |
Surface active organosilicon compounds which have an improved stability at a pH above 9 or bolow 4, have the general formula <IMG> 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 R3SiR'-, Z represents a hydrophilic sulphur, nitrogen or pbosphorus containing substituent or a carboxy-functional group or a salt thereof, and a has the value 0, 1 or 2.
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