43161-97-3Relevant articles and documents
Bisamide type sulfonate surfactant and preparation method thereof
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Sheet 0022-0023, (2018/07/06)
The invention relates to a bisamide type sulfonate surfactant and a preparation method thereof. The structure of the surfactant is represented by a formula shown in the description. In the formula, R1and R2 are C5-C17 alkyl groups, can be same to each other, or can be different from each other; n is 2 or 3; and X is CH2CH2SO3Na or CH2CH2CH2SO3Na or CH2CH2CH2CH2SO3Na or CH2CHOHCH2SO3Na. The bisamide type sulfonate surfactant is prepared through the following steps: a reaction of bisacylaminoalkyl secondary amine and a reagent, such as sodium chloro(bromo)ethanesulfonate or propane(butane)sultone or sodium 3-chloro-2-hydroxypropanesulfonate, and neutralization using NaOH. The bisamide type sulfonate surfactant can be compounded with other surfactants to form an alkali-free oil displacementagent. The bisamide type sulfonate surfactant can reduce the tension of a crude oil/stratum water interface to 10 mN/m order of magnitude at 45 DEG C under a total surfactant mass fraction of 0.01-0.5% without adding an alkali.
Amino-functional silicone waxes
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Page/Page column 2, (2008/06/13)
The present invention relates to silicone waxes having plural tertiary or quaternary amino groups, their preparation and their use as softeners in the textile industry. These waxes can be processed into stable aqueous dispersions and lead to products having a pleasant, soft hand.