Composite stabilizer of metal salt of organic carboxylic acid containing sulfur in use for polymer containing halogen, and application thereof

Abstract

This invention discloses a sulfur-containing metal carboxylate composite stabilizer and its application. The sulfur-containing metal carboxylate composite stabilizer comprises: sulfur-containing metal carboxylate, metal salt stabilizer, organic metal stabilizer, lubricant, and organic auxiliary stabilizer. The sulfur-containing metal carboxylate composite stabilizer can be used in halogen-containing polymers to increase their processing stability. The sulfur-containing metal carboxylate composite stabilizer has such advantages as long thermal stabilization period, low early coloration, and low toxicity.

Description

technical field

[0001] The invention relates to the field of chemical industry, in particular to a sulfur-containing organic carboxylic acid metal salt composite stabilizer and application thereof. Background technique

[0002] Halogen-containing polymers such as polyvinyl chloride have excellent corrosion resistance and mechanical properties, and are cheap, rich in raw materials, and mature in manufacturing technology. Their products are widely used in various fields of industrial and agricultural production. However, a fatal weakness in the processing of halogen-containing polymers is poor thermal stability, so heat stabilizers must be used in the processing of halogen-containing polymers. Heat stabilizers commonly used in the processing of halogen-containing polymers include lead salts, organic tins, and metal soaps. However, lead salt heat stabilizers are more harmful to human health and pollute the environment. Organotin heat stabilizers are expensive and have a bad s...

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