Rare earth and calcium and zinc stabilizer for polychlorovinyl and its preparation

Abstract

Rare-earth and calcium and zinc stabilizing agent for polyethylene is produced by treating rare-earth and calcium and zinc compounds with surface modifying agent, and optimizing with polyethylene and anti-oxidating agent or / and organic tin compounds or organic phosphonite compounds or / and C8 - C22 metal saponified materials of calcium or zinc or magnesium or aluminum or / and ultraviolet absorber or / and urate or / and polyhydroxy esterified materials or / and polyethylene lubricant to be obtained. It has high quality and no toxicity, is produced with low cost and in a simple process.

Description

technical field

[0001] The invention relates to a rare earth metal stabilizer for synthetic resins, in particular to a rare earth metal stabilizer for polyvinyl chloride resins and a preparation method thereof. Background technique

[0002] There are three types of stabilizers for PVC processing: (1) heavy metal compound stabilizers, including lead, cadmium, etc., such stabilizers have high stabilization efficiency, but are highly toxic, have serious vulcanization pollution, and have poor weather resistance; 2) Light metal compound stabilizers, including calcium, zinc, magnesium and aluminum compounds, etc. Although these stabilizers are non-toxic, they have poor stabilization performance and poor original colorability of objects. The synthesis process of calcium zinc compounds is based on organic acids or esters , soluble calcium or zinc salt as the main indirect method, that is, the saponification synthesis process, the equipment efficiency of th...