Preparation method of low molecular weight rubber type modifier polymer

A low-molecular-weight, rubber-type technology, applied in the chemical industry, can solve the problems of regulators such as odor, odor, and unpleasant odor, and achieve the effect of eliminating odor

Inactive Publication Date: 2007-02-28
江苏省润阳胶粘剂厂 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This conditioner is extremely stinky, which causes an odor during the synthesis process and seriously affects the working environment
At the same time, because undecomposed tertiary dodecyl mercaptan inevitably remains in the product, users also have an unpleasant odor when using it

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of the low-molecular-weight rubber-type modifier polymer of the present embodiment adopts directly synthesizing the low-molecular-weight rubber-type modifier polymer, and the specific steps are as follows:

[0032] 1. Ingredients mixing - the ingredients are polymer monomer butadiene and acrylonitrile, regulator n-dodecyl mercaptan and carbon tetrachloride, initiator potassium persulfate, emulsifier sodium lauryl sulfate, medium is Deionized water, the proportion by weight of each ingredient is 18% of butadiene, 12% of acrylonitrile, 3% of n-dodecyl mercaptan, 2% of carbon tetrachloride, 0.1% of potassium persulfate, dodecane Sodium sulfate is 0.78%, and deionized water is 64.12%, and the ingredients are proportioned according to the above ratio;

[0033] 2. Add the reaction kettle to react, control the reaction temperature within 5-50 degrees, and the reaction time is 2-6 hours;

[0034] 3. Discharging after the measured conversion rate is quali...

Embodiment 2

[0036] The preparation method of the low-molecular-weight rubber-type modifier polymer of the present embodiment is basically the same as that of the first embodiment, except that the proportion of ingredients is as follows: 24% butadiene, 7% acrylonitrile, n-dodecyl mercaptan 3.5% carbon tetrachloride, 1.5% carbon tetrachloride, 0.2% potassium persulfate, 0.8% sodium lauryl sulfate, and 63% deionized water.

Embodiment 3

[0038] The preparation method of the low-molecular-weight rubber-type modifier polymer of the present embodiment is basically the same as that of Embodiment 1, except that its emulsifier is potassium abietate and sodium lauryl sulfate, and the proportion of ingredients is as follows: butadiene 26%, acrylonitrile 6%, n-dodecyl mercaptan 2%, carbon tetrachloride 3%, potassium persulfate 0.15%, sodium lauryl sulfate 0.26%, potassium abietate 0.32%, deionized Water is 62.27%.

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PUM

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Abstract

The invention discloses a chemical industry technical area preparing method to produce a low molecular weight rubber type modifier polymer, which comprises the following steps: 1. mixing polymeric monomer, modifier, trigger, emulsifier and agent in rightly weight percentage; 2. adding those into autoclave; 3. gauging conversion rate and discharging after eligible; wherein the modifier is unodor regular twelve carbon sulfhydrate and carbon tetrachloride composite modifier.

Description

technical field [0001] The invention relates to a method for preparing a polymer, in particular to a method for preparing a low-molecular-weight rubber-type modifier polymer, and belongs to the technical field of chemical industry. Background technique [0002] The molecular weight of the low molecular weight rubber modifier is usually 3000-5000. Commonly used low molecular weight rubber modifiers are: low molecular weight polybutadiene (PB), low molecular weight butadiene-styrene polymer (SBR), low molecular weight butadiene-acrylonitrile polymer (NBR), low molecular weight butadiene Diene-acrylonitrile-acrylic acid polymer (XNBR), low molecular weight butadiene-acrylate polymer (PBA), such low molecular weight polymers are widely used in the preparation of resins, rubber modifiers and adhesives. [0003] As far as the applicant knows, there are two methods for preparing low-molecular-weight polymers: one is to degrade high-molecular-weight polymers to convert large molecu...

Claims

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Application Information

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IPC IPC(8): C08F236/12C08F2/26
Inventor 黄立本蒋鹏宇黄敬
Owner 江苏省润阳胶粘剂厂
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