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A kind of production process of modified dibasic lead phosphite and production system thereof

A kind of dibasic phosphorous acid, technology of production system

Active Publication Date: 2019-03-08
九江天盛塑料助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main problems of this process: the product is a dangerous product, the production process is very dangerous, the cost of product storage, transportation and use is high; the product is poorly dispersed, easy to agglomerate, has obvious quality defects, and it is difficult to meet the needs of users; the recycling rate of waste water Low, large amount of wastewater discharge; low degree of automation of the device, low production efficiency, and poor production environment

Method used

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  • A kind of production process of modified dibasic lead phosphite and production system thereof

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Embodiment 1

[0036] A production process of modified dibasic lead phosphite, comprising the following steps:

[0037] In the first step, 89 parts of Huang Dan and 0.35 parts of acetic acid were mixed and stirred for more than 30 minutes, and then the temperature was raised to 60°C;

[0038] In the second step, add 1.2 parts of stearic acid and water to heat up to 80°C, then slowly add 0.3 parts of sodium hydroxide and react with stirring at 70-80°C for 40 minutes;

[0039] In the third step, slowly add 10 parts of phosphorous acid into the mixed material obtained in the first step, and then keep it in an environment of 60-70°C for 1 hour;

[0040] In the fourth step, the mixture obtained in the second step is added to the mixed material obtained in the third step, and then 0.08 parts of bisphenol A and 0.4 parts of magnesium hydroxide are added and stirred for 10 minutes;

[0041] In the fifth step, the mixed material obtained in the fourth step is press-filtered, dried, dedusted and pack...

Embodiment 2

[0043] A production process of modified dibasic lead phosphite, comprising the following steps:

[0044] In the first step, 85 parts of Huang Dan and 0.5 parts of acetic acid were mixed and stirred for more than 30 minutes, and then the temperature was raised to 60°C;

[0045] In the second step, add 1.4 parts of stearic acid and water to heat up to 80°C, then slowly add 0.2 parts of ammonia water and 0.02 parts of stearic acid polyoxyethylene ether at 70-80°C and stir for 40 minutes;

[0046] In the third step, slowly add 12 parts of phosphorous acid into the mixed material obtained in the first step, and then keep it in an environment of 60-70°C for 1 hour;

[0047] In the fourth step, add the mixture obtained in the second step to the mixed material obtained in the third step, then add 1 part of 2-hydroxy-4-n-octyloxybenzophenone and 0.2 parts of magnesium hydroxide and stir for 10 minutes ;

[0048] In the fifth step, the mixed material obtained in the fourth step is pre...

Embodiment 3

[0050] A production process of modified dibasic lead phosphite, comprising the following steps:

[0051] In the first step, 87 parts of Huang Dan and 0.2 parts of acetic acid were mixed and stirred for more than 30 minutes, and then the temperature was raised to 60°C;

[0052] In the second step, add 1.6 parts of stearic acid and water to heat up to 80°C, then slowly add 0.1-0.3 parts of sodium hydroxide and react with stirring at 70-80°C for 40 minutes;

[0053] In the third step, slowly add 1 part of cyanuric acid and 9 parts of phosphorous acid into the mixed material obtained in the first step, and then keep it in an environment of 60-70°C for 1 hour; first add 1 part by mass of cyanuric acid The mixed material obtained in the first step was stirred and reacted for 15 minutes, and then 9 parts of phosphorous acid was slowly added.

[0054] In the fourth step, the mixture obtained in the second step is added to the mixed material obtained in the third step, and then 0.08 p...

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Abstract

The invention discloses a production technology of modified dibasic lead phosphite. The production technology comprises the steps of 1, mixing and stirring 85-95 parts by weight of yellow lead and 0.2-0.5 part of acetic acid for 30 min; 2, adding water into 1.2-1.6 parts of stearic acid, increasing the temperature, then slowly dropwise adding sodium hydroxide into the stearic acid solution, and carrying out a stirring reaction in an environment at the temperature of 70-80 DEGC for 40 min; 3, slowing adding 0.8-1.2 parts of cyanuric acid and 7-11 parts of phosphorous acid into a mixed material; 4, adding the mixer obtained in the step 2 into the mixed material obtained in the step 3, and then adding 0.9-1.1 parts of ultraviolet light absorber and 0.2-0.4 part of magnesium hydroxide to be subjected to a stirring reaction for 10 min; 5, conducting filter pressing, drying, dust removal and packaging on the mixed material obtained in the step 4, so that the modified dibasic lead phosphite is obtained. In the production process of the modified dibasic lead phosphite, the dangerousness is greatly reduced, the cost of storage and transportation and the usage cost are low, and the product application performance is obviously improved.

Description

technical field [0001] The invention relates to the field of a synthesis process and a synthesis device of a polyvinyl chloride heat stabilizer, in particular to a production process and a production system of a modified dibasic lead phosphite. Background technique [0002] Dibasic lead phosphite, also known as: dibasic lead phosphite, molecular formula: 2PbO·PbHPO 3 1 / 2H 2 O, molecular weight: 742.62, mainly used as a heat stabilizer for polyvinyl chloride plastic products, with excellent stability, cold resistance, and ultraviolet resistance, especially suitable for products requiring weather resistance and other aspects. However, due to the flammability of di-salt, it is a dangerous product (dangerous goods number: 41005; hazard category: Class 4.1 flammable solid), and it is easy to burn when encountering sparks or heated, and can cause continuous combustion even in the absence of oxygen. It will often bring great troubles in the process of production, storage, transpo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K3/32C08K3/22C01B25/163
CPCC01B25/163C08K3/22C08K3/32C08K9/10C08K2003/2234
Inventor 周小群阮文响
Owner 九江天盛塑料助剂有限公司
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