Rubber seed oil polyalcohol and preparation method thereof

Abstract

The invention relates to rubber seed oil polyalcohol and a preparation method thereof. The method comprises the following steps of: mixing rubber seed oil, hydrogen peroxide and a catalyst serving as raw materials in a weight ratio of 1:0.5-1.5:0.01-0.05, putting the mixture into a reaction kettle, stirring the mixture and raising temperature to 50 to 80 DEG C, keeping reaction temperature for 3 to 8 hours, lowering the temperature to 30 DEG C, separating acid water out, washing the mixture with aqueous solution of sodium carbonate until the pH of the mixture is between 5 and 6, washing the mixture to be neutral with saturated sodium chloride and water, and performing pressure reduction and water removal at the temperature of between 50 and 90 DEG C for 2 to 5 hours to obtain epoxy rubberseed oil; and adding the epoxy rubber seed oil, methanol, isopropanol and fluoboric acid into the reaction kettle in a weight ratio of 1:1-5:1-5:0.002-0.01, raising the temperature to 75 to 100 DEG C, performing a reaction for 0.5 to 3 hours, washing the reaction product with the aqueous solution of the sodium carbonate until the pH of the reaction product is between 5 and 6, washing the reaction product to be neutral with water, and performing vacuum pumping at the temperature of between 50 and 120 DEG C for 2 to 5 hours to obtain the rubber seed oil polyalcohol. In the method, the conventional petroleum chemical is replaced by a non-edible plant oil resource, so that the dependence of polyurethane industry on petroleum chemicals is reduced, and the added value of the rubber seed oil is increased.

Description

technical field

[0001] The invention relates to a vegetable oil polyol, in particular to a rubber seed oil polyol which can be used for preparing polyurethane and a preparation method thereof. Background technique

[0002] With the increasing shortage of petroleum resources and the rising price of crude oil, it has become an inevitable trend to replace petroleum resources with natural renewable resources. Vegetable oil has attracted more and more attention because of its low price, easy planting, environmental protection and resource renewability. It is of great economic value and scientific significance to study its replacement of petroleum products to produce oligomer polyols and its application development. . In my country, the ring-opening addition of epoxidized soybean oil and alcohols to prepare soybean oil polyols has been industrialized, while the research on other types of vegetable oil polyols is still in an immature stage.

[0003] At present, the vegetable oil ...