Composite heat stabilizer and preparing method thereof

A compound heat stabilizer and heat stabilizer technology, which is applied in the field of heat stabilizers for synthetic resins, can solve the problems of easy precipitation, uneven dispersion, and easy sublimation of profiles, and achieve good initial stability, simple operation, and improved fluidity Effect

Active Publication Date: 2016-07-27
GUANGZHOU CARDLO BIOCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of easy sublimation, uneven dispersion and easy precipitation in the process of profile extrusion in the prior art of PVC products, the purpose of the present inve...

Method used

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  • Composite heat stabilizer and preparing method thereof
  • Composite heat stabilizer and preparing method thereof
  • Composite heat stabilizer and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, a kind of composite thermal stabilizer

[0027] This embodiment 1 provides a composite heat stabilizer, including the following components in parts by weight: 3.5 parts of heat stabilizer, 8 parts of bisphenol A diglycidyl ether, 1 part of light stabilizer, 3 parts of stearic acid amide and 10 parts of mineral oil, wherein the light stabilizer is composed of bis(2,2,6,6-tetramethylpiperidin-4-ol) and phenyl salicylate in a weight ratio of 1:1, The heat stabilizer is composed of zinc stearate, lanthanum salicylate and phosphite in a weight ratio of 1:1:4.

[0028] Preparation:

[0029] A) Preparation of lanthanum salicylate: take salicylic acid, lanthanum nitrate and sodium hydroxide in a molar ratio of 1:1:2, and dissolve sodium hydroxide in an appropriate amount of distilled water to make a 2.0mol / L NaOH solution; Put the salicylic acid into a 500mL three-necked bottle, add an appropriate amount of absolute ethanol to the three-necked bottle, add lantha...

Embodiment 2

[0031] Embodiment 2, a kind of composite thermal stabilizer

[0032]This embodiment 2 provides a composite heat stabilizer, including the following components in parts by weight: 6 parts of heat stabilizer, 12 parts of ethylene glycol diglycidyl ether, 3 parts of light stabilizer, 5 parts of stearic acid amide and 12 parts of mineral oil, wherein the light stabilizer is composed of bis(2,2,6,6-tetramethylpiperidin-4-ol) and phenyl salicylate in a weight ratio of 1:1, The heat stabilizer is composed of zinc stearate, lanthanum salicylate and phosphite in a weight ratio of 1:0.5:2.

[0033] The preparation method refers to Example 1.

Embodiment 3

[0034] Embodiment 3, a kind of composite thermal stabilizer

[0035] This embodiment 3 provides a composite heat stabilizer, including the following components in parts by weight: 7 parts of heat stabilizer, 15 parts of bisphenol A diglycidyl ether, 5 parts of light stabilizer, 6 parts of stearic acid amide and 15 parts of mineral oil, wherein the light stabilizer is composed of bis(2,2,6,6-tetramethylpiperidin-4-ol) and phenyl salicylate in a weight ratio of 1:1, The heat stabilizer is composed of zinc stearate, cerium salicylate and phosphite in a weight ratio of 1:1:4.

[0036] Preparation method: change lanthanum nitrate in step A) to cerium nitrate, and bisphenol a diglycidyl ether in step B) to ethylene glycol diglycidyl ether, and refer to the preparation method in Example 1 for the remaining operations.

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Abstract

The invention belongs to the field of heat stabilizers, and particularly relates to a composite heat stabilizer and a preparing method thereof.The composite heat stabilizer comprises, by weight, 3.5-12 parts of heat stabilizers, 8-15 parts of polyol ether, 1-5 parts of light stabilizers, 3-6 parts of octadecanamide and 10-15 parts of mineral oil, and the heat stabilizers is prepared in the mode that the weight ratio of zinc stearate to rare earth salicylic acid to phosphite ester is 1:(0.5-1):(2-5).The composite heat stabilizer is long in heat stable time, good in initial heat stability and weather resistance and not prone to sublimating and separating out, and has the advantages of being simple in preparing and easy to operate.

Description

technical field [0001] The invention relates to a thermal stabilizer for synthetic resins, in particular to a composite thermal stabilizer and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the plastic varieties with the largest output and the widest application in my country. However, due to the poor thermal stability of PVC itself, a certain amount of thermal stabilizer must be added during the molding process. Traditional PVC heat stabilizers include lead salts, metal soaps, and organotin heat stabilizers. Most of them have good thermal stability efficiency, but they are highly toxic and prone to sulfuration pollution. They are gradually being replaced by new non-toxic rare earths. replaced by heat stabilizers. Existing rare earth heat stabilizers are single rare earth heat stabilizers based on oxides, chlorides and organic acid salts such as lanthanum, cerium, praseodymium, and neodymium. Due to the high activation energy...

Claims

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Application Information

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IPC IPC(8): C08K5/098C08K5/524C08K5/1515C08K5/20C08K5/10C08K5/3435C08K5/134C08L91/00C08L27/06
CPCC08K5/098C08K5/10C08K5/1345C08K5/1515C08K5/20C08K5/3435C08K5/524C08L27/06C08L2201/08C08L2205/03C08L91/00C08L33/04C08K13/02C08K2003/265C08K5/12
Inventor 徐怀义马银官徐伟伟
Owner GUANGZHOU CARDLO BIOCHEM TECH
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