A kind of glyceride-based chlorine-containing plastic heat stabilizer and its production method by gradual esterification method

Abstract

The invention belongs to the technical field of plastic production, and discloses a glyceride-based chlorine-containing plastic heat stabilizer and a production method thereof through a gradual esterification method. The structure of the glyceride-based chlorine-containing plastic heat stabilizer is as follows: wherein, n is an integer from 0 to 22, x is an integer from 10 to 26, y is an integer from 0 to 12, and M is boron, germanium, silicon, tin or phosphorus , A does not exist when M is boron, A is OH when M is germanium, silicon or tin, and A is O when M is phosphorus. The glyceride-based chlorine-containing plastic heat stabilizer of the present invention is a novel environment-friendly heat stabilizer for chlorine-containing plastics such as PVC. Stabilizers such as barium chromium zinc are comparable.

Description

A kind of glyceride-based chlorine-containing plastic heat stabilizer and its step-by-step esterification production method technical field The present invention relates to the technical field of plastic production, specifically relate to a kind of glyceride-based chlorine-containing plastic thermal stabilizer and the same Step-by-step esterification production method. Background technique [0002] The annual production of chlorine-containing plastics in the world exceeds 70 million tons, accounting for about 20% of the total plastics, including polyvinyl chloride. (PVC), chlorinated polyethylene (CPE), chlorinated polyvinyl chloride (CPVC), etc. Among them, PVC is an extremely versatile polymer. It ranks second in the world in the usage of various synthetic materials. As a kind of vinyl polymer substance, PVC is a kind of non-crystalline material, has non-flammability, high strength, good Good weather resistance and excellent geometric stability. The main componen...

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Problems solved by technology

[0004] However, due to the structural characteristics of the molecular chain of chlorine-containing plastics such as PVC, it is easy to remove hydrogen chloride during the heating and plasticizing process to change color and degrade, which in turn affects the appearance and performance of the material product, and even makes it impossible to process at all. Stabilizer has become an indispensable and important additive in the processing of PVC and other chlorine-containing plastic products

So far, in opaque PVC and other chlorine-containing plastic products, lead stabilizers still occupy a dominant position, but lead stabilizers have high toxicity and poor transparency of products

[0005] Among the transparent products, organotin and liquid barium-chromium-zinc products are the main products, which are slightly less toxic. However, from the perspective of processing performance, the production process of organotin products is complicated, and they are easily polluting chemical products, and their cost is high, making them The application market is subject to certain restrictions

In recent years, with the development of a variety of high-efficiency auxiliary stabilizers, traditional calcium-zinc stabilizers have made great progress, but in terms of stability, their cost performance is still difficult to compete with lead salts, and in terms of transparency, they can only Applied in soft products and products with slightly poor transparency, it still cannot reach the level of organotin in transparent hard products and high transparency soft and hard products

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