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Ultra-dispersed composite stabilizer for polychloroethylene and preparation thereof

A composite stabilizer and polyvinyl chloride technology, which is applied in the field of composite stabilizers, can solve problems such as the application of hyperdispersants, achieve excellent synergistic stabilization effects, reduce batching procedures, and reduce batching errors.

Inactive Publication Date: 2008-11-12
慧科高新科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of hyperdispersants in plastic processing is mostly concentrated in plastic coloring, such as increasing the dispersibility of organic or inorganic pigments, but few hyperdispersants are used in lead salt composite stabilizers for polyvinyl chloride

Method used

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  • Ultra-dispersed composite stabilizer for polychloroethylene and preparation thereof
  • Ultra-dispersed composite stabilizer for polychloroethylene and preparation thereof
  • Ultra-dispersed composite stabilizer for polychloroethylene and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add a certain amount of polyethylene glycol, dodecylbenzenesulfonic acid, and hydroquinone into the three-necked flask, start adding acrylic acid at 110-120°C, and keep the temperature at 120°C for 2.5 hours after the dropwise addition. Evaporate the by-product water from the reaction liquid under reduced pressure, react at this temperature for 2 hours, and the speed of dehydration will be significantly slowed down; keep the temperature at 130°C until the amount of water obtained by the vacuum reaction is close to the theoretical value, which is the end point of the reaction; under vacuum conditions Lower the temperature to below 40°C, and discharge the finished product.

[0027] The mass ratio of acrylic acid and polyethylene glycol is 1:0.8, dodecylbenzenesulfonic acid is 1.2% of the total amount of acrylic acid and polyethylene glycol, and hydroquinone is 0.5% of the total amount of acrylic acid and polyethylene glycol .

[0028] The second step is the preparation o...

Embodiment 2

[0031] In the 2m equipped with stirrer, thermometer and heating mantle 3 In the stainless steel reactor, add 800kg stearic acid, be warming up to 110 ℃, slowly add 100kg yellow lead and 20kg hyperdispersant (prepared in embodiment 1). After stirring and keeping warm for 30 minutes, add 80kg of monoglyceride, 6kg of polyethylene wax, and 340kg of light calcium carbonate in sequence. Continue to add 360kg three salts and 200kg two salts again. Keep warm at 110°C. After the material is evenly stirred, release the material to obtain the product. It can also be further granulated (or tableted) to form a granular (or flake) product. See formula table 1 for detailed formula, formula number JS-101.

Embodiment 3

[0033]In the 2m equipped with stirrer, thermometer and heating mantle 3 In the stainless steel reactor, add 700kg stearic acid, be warming up to 110 ℃, slowly add 100kg yellow lead and 30kg hyperdispersant (prepared in embodiment 1). After stirring and keeping warm for 30 minutes, add 100kg of barium stearate, and then add 6kg of polyethylene wax and 500kg of light calcium carbonate in sequence after the reaction is complete. Then continue to add 300kg three salts and 200kg two salts. Keep warm at 110°C. After the material is evenly stirred, release the material to obtain the product. It can also be further granulated (or tableted) to form a granular (or flake) product. See formula table 1 for detailed formula, formula number JS-102.

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Abstract

The invention relates to polyvinyl chloride ultra-dispersed composite stabilizer. The compositions by weight portion of the polyvinyl chloride ultra-dispersed composite stabilizer are: 10 to 20 portions of tribasic lead sulphate, 10 to 15 portions of dibasic lead phosphite, 2 to 4 portions of massicot, 0 to 5 portions of barium stearate, 0 to 4 portions of direactive glyceride, 0 to 4 portions of polyethylene wax, 30 to 40 portions of stearic acid, 1 to 1.5 portions of ultra-dispersed agent and 15 to 25 portions of light calcium carbonate, wherein, the ultra-dispersed agent is copolymers of maleic anhydride-sodium allylsulfonate-acrylate polyethylene glycol monoester. The composite stabilizer prepared can greatly improve the dispersity and the compatibility of the stabilizer and avoid variegation of the stabilizer during the process of processing sectional materials. Utilization of the ultra-dispersed agent also can improve the dispersity and the compatibility of PVC substrates and pigment. The polyvinyl chloride ultra-dispersed composite stabilizer has the advantages of superior performance, low toxity, high efficiency and multiple functions, namely the stabilizer simultaneously has the functions of improvement of the processability, plasticization, easy variegation, lubrication and so on. The method has no pollution and low energy consumption.

Description

technical field [0001] The invention relates to a composite stabilizer for polyvinyl chloride. Background technique [0002] As we all know, PVC is easy to decompose under processing temperature conditions, and a stabilizer must be added to make it process smoothly. In addition, when polyvinyl chloride is heated or exposed to ultraviolet radiation, it will also cause polymer degradation and de-HCl. Therefore, the use and processing of PVC must use stabilizers. Stabilizer is a chemical additive that can inhibit the degradation and discoloration of PVC caused by heat and light during processing and use. Stabilizers can be divided into five categories according to their chemical structures: base lead salt stabilizers, metal soaps, organotin compounds, organic stabilizers and composite stabilizers. [0003] There have been many patents on composite stabilizers for PVC, such as "Preparation method and application of rare earth composite stabilizers for PVC profiles (Patent No....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/08C08K13/02C08K3/30C08K3/32C08K3/22C08L27/06
Inventor 唐守余
Owner 慧科高新科技股份有限公司
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