Cationic-type oligo-surface active agent and preparing method thereof

Abstract

The invention relates to a cation oligomeric surface active agent as well as its making method, including: (1) adding octadecyl dimethyl amine and equimolar propenyl chloride in the reactor to evenly blend; (2) reacting hermetically at 40-50 deg.C for 8-12 hours; (3) adding the resultant in anhydrous aether to produce white deposit, and filtering the deposit to dry; (4) preparing the above resultant into water solution, the concentration 10-30 quality percent, blending, heating to 60-80 deg,C, and adding in redox initiator; (5) after reacting, the system is separated into two layers; (6) taking out the top white paste to dry to obtain white solid. It has higher surface activity, better water solubility and extremely low critical lump concentration.

Description

technical field

[0001] The invention relates to a cationic oligomeric surfactant and a preparation method thereof, belonging to a cationic surfactant and a preparation method thereof. Background technique

[0002] In view of the extremely high surface / interface activity and other special properties of oligomeric surfactants, domestic and foreign scholars have increasingly studied them in recent years. At present, domestic and foreign scholars' research on oligomeric surfactants mainly focuses on dimeric surfactants (Dimeric Surfactants), while research on oligomeric surfactants with a higher degree of polymerization involves less. Owing to the price of the oligomeric surfactant produced abroad is very expensive, and domestic research and development in this respect are very limited, moreover, the relationship between the structure and performance of the oligomeric surfactant needs further research at present, these are all To a certain extent, the promotion and application ...

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