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Preparation method of chlorinated rubber

A technology of chlorinated rubber and chlorinated agent, which is applied in the field of preparation of chlorinated rubber, can solve the problems of low utilization rate of raw materials, complex synthesis process, low yield of chlorinated rubber, environmental pollutants, etc., and achieve utilization rate improvement, synthesis Effects of process simplification and productivity improvement

Inactive Publication Date: 2019-05-14
四川振东精科汽车总成系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned problems in the prior art, the present invention proposes a kind of preparation method of chlorinated rubber, the present invention has solved present chlorinated rubber synthesis technique complexity, the utilization rate of raw material is low, chlorinated rubber yield is low and present Some technical problems such as a large amount of environmental pollutants will be produced during the synthesis of chlorinated rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation method of chlorinated rubber, comprising the steps of:

[0016] 1) Add 100g of natural rubber into the kneading furnace, control the temperature between 70°C, and heat up to dissolve the natural rubber into a liquid;

[0017] 2) add 20ml sulfuryl chloride and 30ml trichloromethane solution in the kneading furnace again as solvent, then control the temperature between 85°C, then feed chlorine in the kneading furnace, the flow velocity of chlorine is 20ml / min, control The reaction time is 12 hours;

[0018] 3) After the reaction is completed, add 10g of 6-ethoxy-2,2,4-trimethyl-1,2 dihydroquinoline. After reacting for 20min, add 5g of dibutyl phthalate, and continue React for 2 hours, and cool down after the reaction to obtain the chlorinated rubber to be used.

Embodiment 2

[0020] A preparation method of chlorinated rubber, comprising the steps of:

[0021] 1) Add 100g of natural rubber into the kneading furnace, control the temperature between 73°C, and heat up to dissolve the natural rubber into a liquid;

[0022] 2) add 25ml sulfuryl chloride and 37.5ml trichloromethane solution in the kneading furnace again as solvent, then control the temperature between 88 ℃ again, then pass into chlorine in the kneading furnace, the flow velocity of chlorine is 25ml / min, The control reaction time is 12.5 hours;

[0023] 3) After the reaction is completed, add 10g of 6-ethoxy-2,2,4-trimethyl-1,2 dihydroquinoline. After reacting for 25min, add 5g of dibutyl phthalate, and continue React for 2.5 hours, and cool down after the reaction to obtain the chlorinated rubber to be used.

Embodiment 3

[0025] A preparation method of chlorinated rubber, comprising the steps of:

[0026] 1) Add 100g of natural rubber into the kneading furnace, control the temperature between 75°C, and heat up to dissolve the natural rubber into a liquid;

[0027] 2) add 30ml sulfuryl chloride and 45ml trichloromethane solution in the kneading furnace again as solvent, then control the temperature between 90°C, then feed chlorine in the kneading furnace, the flow velocity of chlorine is 30ml / min, control The reaction time is 13 hours;

[0028] 3) After the reaction is completed, add 10g of 6-ethoxy-2,2,4-trimethyl-1,2 dihydroquinoline, after reacting for 30min, add 5g of dibutyl phthalate, and continue React for 3 hours, and cool down after the reaction to obtain the chlorinated rubber to be used.

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PUM

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Abstract

The invention discloses a preparation method of chlorinated rubber. The preparation method of the chlorinated rubber comprises the following steps: 1) adding natural rubber into a kneading furnace, controlling the temperature to be 70-75 DEG C, and heating to dissolve the natural rubber into liquid; 2) adding a chlorinating agent solution as a solvent into the kneading furnace, controlling the temperature to be 85-90 DEG C, introducing chlorine gas into the kneading furnace, and controlling the reaction time to be 12-13 hours; and 3) adding a small amount of 6-ethoxy-2, 2, 4-trimethyl-1, 2 dihydroquinoline after the reaction is finished, adding dibutyl phthalate after the reaction lasts for 20-30 min, keeping reaction for 2-3 h, and cooling to obtain the chlorinated rubber for subsequent use after the reaction is finished. According to the invention, the synthesis process of the chlorinated rubber is obviously simplified, the utilization rate of raw materials is improved, the yield ofthe chlorinated rubber is effectively improved, and a large amount of environmental pollutants cannot be generated in the synthesis process of the chlorinated rubber.

Description

technical field [0001] The invention relates to the field of environment-friendly rubber, in particular to a preparation method of chlorinated rubber. 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. With the increasing emphasis on environmental protection, the existing chlorinated rubber synthesis method is complicated, and a large amount of environmental pollutants will be produced in the synthesis process, and the utilization rate of raw materials is low, resulting in the deterioration of chlorinated rubber. Yields are also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C19/14C08L15/02C08K5/3437C08K5/12
Inventor 徐振东
Owner 四川振东精科汽车总成系统有限公司