A kind of preparation technology of fatty alcohol polyoxyethylene ether ricinoleate

Abstract

The invention discloses a technology for preparing fatty acid polyoxyethylene ether ricinoleate. The technology includes the steps that the main ingredient glyceryl ricinoleate in raw materials of ethoxylated fatty alcohol and castor oil is heated to be boiled under the combined action of an organic tin catalyst, a polymerization inhibitor and entrainer methylbenzene, and then the fatty acid polyoxyethylene ether ricinoleate can be obtained through transesterification. By the adoption of the technology, the azeotropic fractionation ester exchange process is adopted, micromolecule alcohol, acid and the like of by-products in the reaction process are removed from a fractionator by means of azeotropic distillation, and thus the polyoxyethylene ether ricinoleate with the single ingredient is obtained. Serving as the main intergradient of a high fat film, the product prepared through the method has good wetting, film formation and lubricating effects, the high corrosion resistance is further achieved, and the defect that the high fat film is prone to corrosion is effectively overcome. The product has extremely-high stability at the normal temperature and can be effectively mixed with various pesticides and plant nutritional ingredients, uniform high fat films can be formed on the surfaces of plant bodies, and the requirement for the high fat films with different purposes can be met.

Description

technical field [0001] The invention belongs to the technical field of macromolecular chemistry, in particular, relates to a preparation process of fatty alcohol polyoxyethylene ether ricinoleate, in particular, relates to a fatty alcohol polyoxyethylene used for preparing high-fat film Preparation process of ether ricinoleate. Background technique [0002] High-fat film is a film-forming substance made of higher fatty acids, which is a white, delicate, viscous, water-soluble substance. It is not a chemical bactericide, does not have a bactericidal effect, and is a physical protective agent. After spraying on the surface of plants, it will spread automatically, forming a layer of monomolecular film invisible to the naked eye, wrapping the plants, protecting the crops from the infection of external diseases and the expansion of germs, but not affecting the growth, ventilation and air permeability of the crops. Light can play a role in disease prevention; at the same time, i...

AI Technical Summary

Problems solved by technology

[0003] However, the high-fat film products in the market currently have the following major problems: during the film-forming process on the surface of the plant, the emulsifier molecules remaining in the water phase will hinder the aggregation of latex particles, thereby reducing the film-forming speed and initial viscosity. low, resulting in uneven film formation or short film-forming maintenance time; the emulsion has poor stability, and the emulsifier is enriched on the particle surface through physical adsorption. Floor