Ecological polyester polyol and preparation method thereof

Abstract

The invention relates to ecological polyester polyol and a preparation method thereof, and the ecological polyester polyol is prepared by taking natural polyacid and natural polyol as reaction raw materials and carrying out esterification reaction through gradient heating and nitrogen flow control. The used raw materials can be extracted from the nature, are wide in source and low in price, and can be regenerated; the prepared polyester polyol can be used for preparing polyurethane resin and then preparing synthetic leather, and the wet base thickness and peel strength of the polyester polyol are excellent; the economic value is high and the operation is easy.

Description

technical field [0001] The invention relates to the field of polyester polyol synthesis, in particular to an ecological polyester polyol and a preparation method thereof. Background technique [0002] Petrochemical resources such as crude oil and natural gas play an important role in the chemical industry worldwide, but due to their non-renewable defects, they will be exhausted one day. Practitioners in the chemical industry have been looking for renewable natural raw materials that can replace petrochemical products. However, renewable natural raw materials that can replace petrochemical products must have these two characteristics of low price and wide source of raw materials, otherwise they will lose their economic significance. [0003] The use of natural raw materials to prepare renewable polyester polyols has become a research hotspot in the polyurethane industry in recent years. For example, triglycerides extracted from animal fats or vegetable oils can be hydrolyze...

AI Technical Summary

Problems solved by technology

However, renewable natural raw materials that can replace petrochemical products must have these two characteristics of low price and wide source of raw materials, otherwise they will lose their economic significance.