Pentaerythritol isostearic acid ester synthesizing method

Abstract

The invention provides a synthetic method of pentaerythrityl isostearate, and belongs to the synthetic technology field of ester compounds in organic chemistry. The synthetic method comprises allowing pentaerythritol and isostearic acid to carry out ester reaction in nitrogen gas atmosphere in the presence of solid catalyst, and filtering. The solid catalyst can be stannous oxide or zinc oxide or ferric chloride in the amount of 0.03-0.10% of total weight of the pentaerythritol and the isostearic acid. The new solid catalyst has high selectivity, no by-product generation, equipment corrosion resistance, simple production process, and repeated use. Process parameters and conditions such as feed mixed ratio, catalyst amount, reaction temperature, reaction time, etc. can be reasonably determined by optimum design and repeated experimental study according to the operation requirement of the metal oxide catalyst. The reaction condition is mild and the adopted device is simple; therefore, cost and energy consumption of the device are reduced.

Description

The synthetic method of pentaerythritol isostearate technical field The invention relates to a synthesis method of pentaerythritol isostearate, which belongs to the technical field of synthesis of ester compounds in organic chemistry. Background technique Pentaerythritol isostearate is a colorless and transparent liquid oil, basically odorless, forms a three-dimensional structure, has high thermal stability, has film-forming, water-resistant, and emollient functions, and is a non-sticky moisturizer. It has good dispersibility and suspension for powder, can prevent sedimentation, and has good skin-adhesiveness. Suitable for moisturizing creams, lotions, sunscreen products and make-up series, it can soothe and nourish skin tissue, which is beneficial to the maintenance of mature skin. The synthetic method of existing pentaerythritol isostearate mainly is the acid alcohol esterification method, with pentaerythritol and isostearic acid as raw material, with p-toluenesulfonic ...

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Problems solved by technology

The use of this type of catalyst requires processes such as washing with water, and the process is relatively complicated, and some catalysts still remain in the product, causing the quality of the product to change easily during storage and affecting product stability.