Hydroxylated tung oil and ester group-aminated preparation method thereof

Abstract

The invention discloses a hydroxylated tung oil and an ester group-aminated preparation method, belonging to the technical field of organic chemosynthesis. In the method, under a certain condition, ester groups in the tung oil and diethanol amine are subjected to aminolysis reaction on the premise of reserving conjugated double bonds, thus the tung oil is hydroxylated to mainly produce a compound containing terminated hydroxyl and three conjugated double bonds. The structural formula of the compound is shown in the specification. The aminolysis reaction product plays an important role in developing and producing processes of leading the tung oil into waterborne polyurethane, not only can combine the advantages of the tung oil and the polyurethane, but also can improve the utilization ratio of tung oil resources as special local products in China and decrease the dependence on petroleum products; and simultaneously, the method has the advantages of simplicity, practicability, high conversion rate and convenience in industrialized production.

Description

technical field The invention relates to a preparation method of hydroxylated tung oil and ester aminolysis thereof, belonging to the technical field of organic chemical synthesis. Background technique Tung oil is a special product of our country, and it is also an important industrial raw material and a traditional export commodity. The annual output of tung oil in my country is more than 100,000 tons, accounting for 80% of the world's tung oil production and 60% of the world's sales. Therefore, it is of special significance to study tung oil and make more products related to tung oil industrialized. The main component of tung oil is tung oil triglyceride, that is, octadecyl-conjugated-9,11,13-acid triglyceride, and its structural formula is as follows: CH 3 (CH 2 ) 3 -CH=CH-CH=CH-CH=CH-(CH 2 ) 7 -COOCH 2 | CH 3 (CH 2 ) 3 -CH=CH-CH=CH-CH=CH-(CH 2 ) 7 -COOCH | CH 3 (CH 2 ...

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Problems solved by technology

Compared with the aminolysis method, the common disadvantage of the alcoholysis method is that it needs to be carried out at a high temperature (200°C-240°C), which not only wastes energy, but also may increase by-products when reacting at a high temperature for a long time; In addition to obtaining hydroxylated products at a lower temperature, the structure of the product can be more easily controlled and the side reactions are less

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