STABILE ALKYLWASSERSTOFFPOLYSILOXAN- EMULSIONEN
An aqueous alkylhydridopolysiloxane emulsion is stabilized against loss of hydrogen by addition thereto of about 0.1 to 5% by weight of an emulsifier containing perfluoroalkyl groups. The emulsion may further contain a fluoroalkyl-substituted siloxane of the formula wherein R each independently is a...
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Main Authors | , , , |
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Format | Patent |
Language | German |
Published |
20.07.1978
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Edition | 2 |
Subjects | |
Online Access | Get full text |
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Summary: | An aqueous alkylhydridopolysiloxane emulsion is stabilized against loss of hydrogen by addition thereto of about 0.1 to 5% by weight of an emulsifier containing perfluoroalkyl groups. The emulsion may further contain a fluoroalkyl-substituted siloxane of the formula wherein R each independently is alkyl with 1 to 6 carbon atoms or phenyl, RF is fluoroalkyl with 4-12 carbon atoms, a is about 5 to 70, and b is about 5 to 70. Advantageously the emulsifier is a member selected from the group consisting of a perfluoroalkyl ether of the formula CxF2x+1SO2N (CH3) CO-(OCH2-CH2)n-(OCH CH3CH2)m-OC4H9, wherein X=about 6-12, n=2-about 40 and m=2-about 40, and a perfluorinated alkane sulphonic acid salt of the formula CxF2x+1SO3N(CnH2n+1)4 wherein x=6-12 and n=1-3. |
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Bibliography: | Application Number: DE19772701724 |