| 摘要 |
1,198,096. Polysiloxane sulphonates; emulsions. UNION CARBIDE CORP. 14 July, 1967 [18 July, 1966], No. 32511/67. Heading C3T. [Also in Divisions B1 and C5] Polysiloxane sulphonates contain 0À1-100 mol. per cent of units and 0À0-99À9 mol per cent of units R b <SP>11</SP>SiO 3 wherein M is a mono-, di-, tri- or tetravalent cation, R<SP>1</SP> is an alkyl, cycloalkyl, aryl, aralkyl, alkaryl, alkenyl or cyoloalkenyl group, optionally halo-, alkoxy-, aryloxy-, or cyano-substituted, R is an alkylene, cycloalkylene, alkyleneoxyalkylene or cycloalkyleneoxyalkylene group having an OH group vicinal to the -SO 3 - group, R<SP>11</SP> is H or as R<SP>1</SP> above, a is 0, 1 or 2, x is 1, 2, 3 or 4, the valency of M, and b is 1, 2 or 3. The polysiloxanes in which M is mono- or divalent may be prepared by reaction of the corresponding epoxy polysiloxanes with the bisulphite of the required cation in the presence of a catalytic amount of a sulphite; from these, polysiloxanes with other values of M may be prepared by ion exchange, e.g. with the chloride of the desired metal. The examples illustrate the reaction of a polysiloxane wherein y=0-10 and z=1-7 with z mols. of allyl glycidyl ether, then with NaHSO 3 and Na 2 SO 3 ; in Example 1 the reactions proceed according to the following equations: The products are surfactants:-they may be mixed with the sodium sulphate of 3: 9-diethyltridecanol-6 and naphtha, optionally in aqueous emulsion, to give a wood or metal cleaning liquid; with oleic acid, ethanolamine, NaNO 2 and naphtha, optionally in aqueous emulsion, to give a dry-cleaning liquid; and with carnauba wax, oleic acid, triethanolamine, borax and water, to give a polish emulsion. |
