A kind of chlorinated rubber and production method thereof

A technology of chlorinated rubber and production method, which is applied in the field of rubber production to achieve the effects of increasing production capacity, overcoming technical difficulties, and facilitating desolventization

Inactive Publication Date: 2011-12-07
福建省龙岩龙化化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method overcomes the shortcomings caused by the too high or too low boiling point of the solvent of the two technical solutions, adopts a new solvent with a moderate boiling point, the ...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put 450 kilograms of natural rubber through mastication, and a mixed solvent of 1,1,2 trichloroethane and chloroform with a mass mixing ratio of 1:6, put it into a dissolution kettle and heat up to dissolve into a rubber solution, and the temperature of the sol is controlled at It can be between 42°C and 65°C. After being dissolved by oxygen (oxygen cylinder or direct air) is dissolved, the solution is sent to the chlorination tank for chlorination reaction, using iodine as a catalyst, the amount of iodine catalyst It is 1 / 3000-1 / 1500 of the amount of rubber input, preferably 1 / 2000, that is, 0.225 kg of iodine catalyst, which is pre-dissolved in the same 1,1,2 trichloroethane and chloroform Mixed solvent (a small amount, enough to dissolve the iodine catalyst), so that excess impurities will not be introduced, and chlorine gas is introduced for chlorination reaction. The reaction temperature of the chlorination reaction is between 70°C and 80°C, and the duration of the ...

Embodiment 2

[0020] Embodiment 2 (best embodiment):

[0021] Put 450 kg of natural rubber into the dissolution kettle after masticating, and a mixed solvent of 1, 1, 2 trichloroethane and chloroform with a mass mixing ratio of 13:87 (that is, about 1:6.9), and heat it up to dissolve into For rubber solution, the temperature of the sol can be controlled between 42°C and 65°C. After the solution is dissolved by passing oxygen (introducing oxygen into the oxygen bottle or directly passing in air), the solution is sent to the chlorination tank for chlorination reaction, and iodine is used as the Catalyst, the input amount of iodine catalyst is 0.225 kilograms, and what this iodine catalyst is dissolved in the same 1,1,2 trichloroethane and the mixed solvent of chloroform in advance, will not introduce unnecessary impurity like this, and pass into chlorine to carry out Chlorination reaction, the reaction temperature of the chlorination reaction is carried out between 75°C and 80°C, and the reac...

Embodiment 3

[0023] Put 500 kilograms of natural rubber through mastication, and a mixed solvent of 1,1,2 trichloroethane and chloroform with a mass mixing ratio of 1:7.5, put it into the dissolution kettle and dissolve it into a rubber solution by heating up, and the temperature of the sol is controlled at It can be between 42°C and 65°C. After being dissolved by oxygen (oxygen cylinder or direct air) is dissolved, the solution is sent to the chlorination tank for chlorination reaction, using iodine as a catalyst, the amount of iodine catalyst It is 0.17 kg, and the iodine catalyst is pre-dissolved in the same mixed solvent of 1,1,2 trichloroethane and chloroform, so that unnecessary impurities will not be introduced, and chlorine gas is introduced for chlorination reaction, chlorination The reaction temperature of the reaction is carried out between 65° C. and 75° C., and the duration of the reaction is 11 hours to obtain a finished chlorinated rubber product.

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PUM

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Abstract

The invention provides a chlorinated rubber and a production method thereof. The chlorinated rubber belongs to C08C19/00 in information processing center (IPC) class numbers. The production method comprises the following process steps: after plastifying, heating so as to dissolve a natural rubber to a rubber solution, wherein a used solvent is a mixing solvent of 1,1,2-trichloroethane and trichloromethane, and the mass mixing ratio of 1,1,2-trichloroethane to trichloromethane is (1:6)-(1:8); and after introducing oxygen and dissolving, introducing chlorine for chlorination reaction and preparing the chlorinated rubber finished product. According to the invention, the temperature in the production method of the chlorinated rubber is convenient for control and simultaneously is beneficial to solvent removal, recovery and improvement of capacity; and the main content of the prepared chlorinated rubber can be further increased.

Description

technical field [0001] The present invention relates to a process for the production of rubber, which is assigned to C08C19 / 00 in the IPC classification code. Background technique [0002] Chlorinated rubber is a polychlorinated compound of natural rubber, which is the chloride of isoprene. Because of its excellent film-forming properties, adhesion, corrosion resistance, flame retardancy and insulation, it can be widely used in the manufacture of adhesives, ship paint, container paint, chemical anti-corrosion paint, road marking paint, fireproof paint, construction Coatings and printing inks are one of the promising chlorine-based fine chemical products. [0003] The traditional production method of chlorinated rubber is to adopt solvent water analysis method and solvent exchange method, both use traditional carbon tetrachloride solvent. The chlorinated rubber product itself is non-toxic, odorless, and harmless to the human body and the environment. Only because carbon te...

Claims

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Application Information

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IPC IPC(8): C08C19/14
Inventor 张振良
Owner 福建省龙岩龙化化工有限公司
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