Sulphosuccinic acid esters

Sulphosuccinic acid esters should be grouped into mono- and diesters. The first step of the monoester sulphosuccinate synthesis is the esterification of a hydroxyl-bearing stock material by maleic acid anhydride. As stock materials, long-chain primary alcohols, ethoxylated alcohols, ethoxylated alkylphenols, alkanolamides, ethoxylated alkanolamides, or monoglycerides are generally used [10, p. 405 ff 75, 76]. 

Aerosol is also a trade name for certain wetting agents, most of which are esters of sodium sulphosuccinic acid. 

In these tests, the mixture of Na2Si03/tall oil was added to the scrubber before desliming. Collector used in the bulk circuit was sulphosuccinate. In the rutile circuit, phosphoric acid ester was used. Silica was rejected in a bulk talking. The overall metallurgical results obtained in the continuous operation are shown in Table 25.12. 

Polyaniline in the emeraldine base state doped with di(butoxyethoxyethyl) ester of sulphosuccinic acid had high film conductivity and an elongation at break of 195%. This high flexibility is particularly needed for elastomer coatings to impart elasticity on conductive materials. 

Preparation Di(Butoxyethoxyethyl) Ester of Sulphosuccinic Acid Dopant... 

Water content is adjusted to the total surfactant concentration of 30-42 % wt. The residual sulphite in the product may be oxidised to sulphate. The sulphonation proceeds also well when using partially hydrated crystalline sodium sulphite in a jacketed shear-stress reactor. This process modification is especially appropriate for manufacturing concentrated sulphosuccinate monoesters as flakes or vermicelli (often with plasticisers and fillers added in situ) suitable in mild synthetic soap bars [78]. The Cn-ig alcohols (I), ethoxylated (x2-4 mole EO) alcohols (II), and fatty monoethanolamides (III) esters of sulphosuccinic acid, mainly as sodium and alkanolamine salts, are of most practical importance as very mild high-foaming surfactants useful for personal care products and in wool, fur, and leather treatment. Very mild disodium PEG-5 laurylcitrate sulphosuccinate (in combination with sodium lauryl ethersulphate) serve for cosmetics produced by Witco as "Rewopol SB CS 50". 

Acid. Conversion to carboxylic acid and alcohol takes place. The sulphonate group may be on either of these. Thus acyl isethionates yield a fatty acid and isethionate ions, mono- and di-alkyl sulphosuccinates yield fatty alcohols and sulphosuccinic acid, and a-sulphonated fatty esters yield the a-sulphonated fatty acid and a low-molecular-weight alcohol. 

Sulphosuccinic acid, bis(2-ethylhexyl)ester, sodium salt... 

Name SULPHOSUCCINIC ACID, BIS(2-ETHYLHEXYL) ESTER, SODIUM SALT PMNr 91572 CAS Nr 00577-11-7... 

As a class of surfactants, sulphosuccinates differ from most other sulphonates in their chemical stability and, due to the presence of the ester linkages, sulphosuccinates will hydrolyse at extremes of pH and with elevated temperature. Monoesters are more sensitive than diesters, with optimal stability of pH 6-8, whilst diesters are more stable and will tolerate pH of 1-10 at room temperature. This allows the use of diesters in a much wider range of environments, particularly under moderately acidic conditions. 

A special class of sulphonates are sulphosuccinates which are esters of sulpho-succinic acid ... 

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