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Ternary integrated rubber latex agglomeration process

A technology of integrating rubber and latex, which is applied in the field of synthetic rubber, can solve the problems of undisclosed ternary integrated rubber latex coagulation process, etc., and achieve the effects of low metal corrosion, easy drying, and low metal ion content

Active Publication Date: 2016-05-11
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Judging from the current technical situation, there is no coagulation process for ternary integrated rubber latex disclosed in the prior art

Method used

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  • Ternary integrated rubber latex agglomeration process
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  • Ternary integrated rubber latex agglomeration process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Coagulate the ternary integrated rubber latex according to the following process steps:

[0032] ① Preparation of condensed mother liquor:

[0033] Accurately weigh 50 grams of ammonium sulfate, dissolve it in 20 parts by weight of desalted, deoxygenated water, and make it into a condensed mother liquor, which is set aside;

[0034] ② Preparation of coagulant solution:

[0035] After mixing 98 parts by mass of commercially available polyepichlorohydrin dimethylamine and 2.0 parts by mass of methyl lignin, dilute it with desalted and deoxygenated water to a solution with a solid content of 10%, and set aside;

[0036] ③ Preparation of raw materials:

[0037] Preheat 500 grams of ternary integrated rubber latex equivalent to 100 grams of dry glue with a solid content of 20% to 55°C and set aside;

[0038] ④ Preparation of pH regulator:

[0039] Preparation weight percentage concentration is the sulfuric acid solution of 20%, standby;

[0040] ⑤ Coagulation of latex: ...

Embodiment 2-6

[0048] According to the steps of Example 1, the ternary integrated rubber latex was subjected to coagulation treatment, and the raw material ratio and the technical indicators achieved by the coagulation treatment process are listed in Table 1.

[0049] Table 1 Embodiment 2-6 raw material ratio and product technical index table

[0050] project

[0051] Latex solid content, %

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Abstract

The present invention relates to a ternary integrated rubber latex agglomeration process, and belongs to the technical field of synthetic rubbers. According to the agglomeration process, a ternary integrated rubber latex is adopted as a raw material, sulfuric acid is adopted as a pH value adjusting agent, an ammonium sulfate aqueous solution is adopted as an agglomeration mother liquor, and a poly epichlorohydrin-dimethylamine and cellulose derivative complex is adopted as an agglomeration agent; and the steps comprise: adding the agglomeration agent to the agglomeration mother liquor, adding the raw material, adding the pH value adjusting agent, and carrying out agglomeration. According to the present invention, the composite agglomeration agent is used, such that the COD content in the production wastewater can be reduced during the ternary integrated rubber production; the composite agglomeration agent has good water solubility, and can be used within a wide pH value range; the particle size of the colloidal particles after the agglomeration is moderate, the average particle size is 0.5-2 cm, and the drying is easily achieved; and the metal-ion-free ammonium sulfate electrolyte is adopted as the agglomeration mother liquor, such that the ternary integrated rubber with characteristics of low metal ion content and low corrosion on metals can be produced.

Description

technical field [0001] The invention relates to a ternary integrated rubber latex coagulation process, which belongs to the technical field of synthetic rubber. Background technique [0002] The ternary integrated rubber of emulsion polymerization is a polymer formed by emulsion copolymerization of styrene, isoprene and butadiene three monomers initiated by free radicals. The most important aspect of integrated rubber is to introduce isoprene into In styrene-butadiene rubber, it has some properties of natural rubber. The coagulation process of the ternary integrated rubber latex uses the traditional coagulation process in the current emulsion polymerization, that is, after the emulsion polymerization is completed, the unreacted raw materials are removed by degassing, and then enter the coagulation unit, and a coagulant is added to the coagulation kettle for coagulation. Then, after alkali washing, dehydration and drying, the ternary integrated rubber product is obtained. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C1/15
Inventor 王晓敏李静刘浩孙丽朋张桦刘容德桂俊杰王晶张新华孙培培
Owner CHINA PETROLEUM & CHEM CORP
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