Branched chain ether type anionic surfactant and preparation method thereof
A surfactant and anion technology, applied in the field of branched-chain ether sulfonate anionic surfactant and its preparation, can solve the problems of complicated operation steps, complex synthesis process, harsh reaction conditions and the like
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Embodiment 1
[0076] Synthetic novel surfactant (1) has the following structure:
[0077]
[0078] Step 1: adding polyoxyethylene lauryl alcohol (3) ether to epichlorohydrin to obtain chloroglycerin ether. The reaction temperature is 80°C; the reaction time is 2 hours. with SnCl 4 For the addition reaction catalyst; in molar ratio,
[0079] Lauryl alcohol polyoxyethylene (3) ether: epichlorohydrin: SnCl 4 =1:1:0.006.
[0080] Step 2: Intramolecular cyclization reaction of the obtained chloroglyceryl ether under the action of alkali to obtain glycidyl ether. Reaction temperature is 85 ℃; Reaction time is 4 hours; Molar ratio,
[0081] Chloroglycerin ether: alkali = 1: 1.6;
[0082] The base is NaOH, used as a 30% aqueous solution.
[0083] Step 3: adding the obtained glycidyl ether to isooctyl alcohol polyoxyethylene (3) ether to obtain a two-tailed alcohol intermediate with the structural formula (VI). The reaction temperature was 80°C, and the reaction time was 2 hours.
[0084...
Embodiment 2~9
[0097] According to the method of Example 1, different raw materials 1 and 2 were selected as starting materials, and a series of novel surfactants (2)-(9) having the general formula (I) were synthesized. The structures of the synthesized compounds were confirmed by negative ion ESI-MS. Raw material 1, raw material 2 and R in the product structure formula 1 , R 2 , R 3 , m, n, M are shown in Table 1.
[0098] Table 1 branched chain ether type sulfonate anionic surfactant of the present invention
[0099]
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