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Powdered composite calcium zinc stabilizing agent and preparation method thereof

A technology of composite calcium zinc and stabilizer, which is applied in the field of stabilizer preparation, can solve problems such as poor compatibility and poor coloring, and achieve the effect of improving thermal stability and inhibiting degradation

Inactive Publication Date: 2010-12-15
JIANGSU POLYTECHNIC UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The poly fatty acid has good compatibility with PVC, which can effectively solve the problems of poor compatibility and poor initial coloring of current PVC calcium zinc stabilizers

Method used

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  • Powdered composite calcium zinc stabilizing agent and preparation method thereof
  • Powdered composite calcium zinc stabilizing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Efficient Powder Composite Calcium-Zinc Stabilizer

[0023] 1. Preparation of acrylic acid functionalized polyfatty acid resin

[0024] In the reaction tank, add 893kg of oleic acid, and slowly heat up under constant stirring. When the temperature rises to 65°C, add 180kg of polyfatty acid resin, 150kg of calcium hydroxide, 100kg of zinc oxide, and 950kg of higher alcohol to carry out a salt-forming reaction, stir and keep warm, and keep the temperature at 65-70°C under normal pressure Keep warm for two hours. Pour the contents of the reaction tank into the drain tank.

[0025] 2. Preparation of high-purity epoxy fatty acid calcium

[0026] In the reaction tank, add 1786kg of oleic acid, and slowly heat up under constant stirring. When the temperature rises to 55-65°C, stop heating, add 200kg of glacial acetic acid and 30kg of concentrated sulfuric acid. Begin to drip hydrogen peroxide 1040kg. Control the rate of addition, the dropwise addition is compl...

Embodiment 2

[0029] Example 2: High-efficiency powder composite calcium-zinc stabilizer

[0030] 1. Preparation of acrylic acid functionalized polyfatty acid resin

[0031] In the reaction tank, add 129kg of oleic acid once, and slowly heat up under uniform stirring. When the temperature rises to 60°C, add 17.5kg of polyfatty acid resin, 15.6kg of calcium hydroxide, 10.5kg of zinc oxide, and 94kg of higher alcohol for salt-forming reaction, stir and keep warm, and keep the temperature at 65-70°C. Press down and keep warm for 3 hours. Pour the contents of the reaction tank into the drain tank.

[0032] 2. Preparation of high-purity epoxy fatty acid calcium

[0033] In the reaction tank, add 258kg of oleic acid, and slowly heat up under constant stirring. When the temperature rises to 55-65°C, stop heating, add 20.6kg of glacial acetic acid and 3kg of concentrated sulfuric acid. Begin to drip hydrogen peroxide 104kg. Control the rate of addition, the dropwise addition is completed in a...

Embodiment 3

[0036] Example 3: Efficient Powder Composite Calcium-Zinc Stabilizer

[0037] 1. Preparation of acrylic acid functionalized polyfatty acid resin

[0038] In the reaction tank, the oleic acid of 155kg was added once, and the temperature was slowly raised under uniform stirring. When the temperature rises to 55°C, add 21kg of polyfatty acid resin, 18.72kg of calcium hydroxide, 12.6kg of zinc oxide, and 112.8kg of higher alcohol to carry out a salt-forming reaction, stir and keep warm, and keep the temperature at 65-70°C. Constant temperature under normal pressure for two hours. Pour the contents of the reaction tank into the drain tank.

[0039] 2. Preparation of high-purity epoxy fatty acid calcium

[0040] In the reaction tank, add 213kg of oleic acid, and slowly heat up under constant stirring. When the temperature rises to 55-65°C, stop heating, add 24.72kg of glacial acetic acid and 3.6kg of concentrated sulfuric acid. Begin to drip hydrogen peroxide 125kg. Control th...

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Abstract

The invention relates to a powdered composite calcium zinc stabilizing agent and a preparation method thereof and belongs to the preparation of a stabilizing agent for plastic processing. The stabilizing agent consists of the following components in percentage by weight: 14 to 38 percent of poly-fatty acid resin calcium zinc, 20 to 45 percent of epoxy fatty acid calcium zinc soap, 10 to 15 percent of phosphite ester, 10 to 15 percent of beta-diketone compound, 11 to 23 percent of hindered phenol antioxidant and 10 to 15 percent of lubricant. The preparation method comprises the following steps of: throwing a poly-fatty acid resin, a hydroxide of an alkali-earth metal, an oxide of zinc, high alcohol and oleic acid according to proportion into a reactor to perform salifying reaction to obtain the poly-fatty acid resin calcium zinc; performing epoxidation of the oleic acid, hydrogen peroxide and glacial acetic acid serving as raw materials in the presence of concentrated sulfuric acid serving as a catalyst according to the proportion to generate epoxy fatty acid, directly reacting the epoxy fatty acid with calcium hydroxide to obtain the high-purity epoxy fatty acid calcium soap; and compounding the poly-fatty acid resin calcium zinc with the epoxy fatty acid calcium soap reasonably and then adding other auxiliary agents to obtain the stabilizing agent. The powdered composite calcium zinc stabilizing agent and the preparation method thereof can effectively solve the problems of low compatibility and low dyeing property at an initial stage of the conventional polyvinyl chloride (PVC) calcium zinc stabilizing agent.

Description

technical field [0001] The invention belongs to the preparation of a stabilizer for plastic processing, in particular to a powder composite calcium-zinc stabilizer and a preparation method thereof. Background technique [0002] Since my country began to independently produce PVC heat stabilizers in the mid-1950s, the consumption of heat stabilizers has increased significantly with the rapid development of the PVC industry, and heat stabilizers have developed into the second largest category of plastic additives. product. In recent years, my country's heat stabilizers have also had a certain amount of import and export. However, due to the low grade of heat stabilizers in my country, highly toxic products still dominate. The main export varieties are lead salt heat stabilizers, with an annual export volume of about four 5,000 tons, and at the same time import a certain amount of environmentally friendly calcium zinc stabilizers and organic tin heat stabilizers to meet the need...

Claims

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Application Information

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IPC IPC(8): C08K5/00C08K5/1515C08K5/524C08K5/07C08K5/13C08K5/17C08K5/5333C08K5/20C08L27/06
Inventor 陶宇沈卫锋夏艳平陶国良
Owner JIANGSU POLYTECHNIC UNIVERSITY
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