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A kind of method of polyisoprene glue condensation

A polyisoprene and glue technology, which is applied in the field of polyisoprene glue coagulation, can solve the problem that the coagulation process of isoprene rubber cannot be well applied, the size of the solvent content of water colloid is unqualified, and the isoprene rubber is self-contained. The problem of high viscosity, to achieve the effect of simple and easy preparation method, reduced solvent content and uniform size

Active Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, in the coagulation of butadiene rubber, the related additives reported include zinc oxide, magnesium silicate and SP169, etc., but due to the high self-adhesiveness of isoprene rubber, these additives cannot be well applied to the coagulation process of isoprene rubber
[0009] It can be seen that the coagulation process effect is not good in the production of polyisoprene polymerization in the prior art, and the solvent content in the hydrocolloid particles and the size of the hydrocolloid particles are unqualified.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This example is used to illustrate the coagulation method of the polyisoprene glue of the present invention.

[0031] (1) Preparation of stripping agent: 80 parts by mass of ammonium polyacrylate (Chengdu Wanruida Company, viscosity average molecular weight 4200), 10 parts by mass of ethylenediaminetetraacetic acid sodium salt (Changzhou Dayuan Chemical Co., Ltd.) and tripolyphosphoric acid 10 parts by mass of sodium (Shandong Zhenhua Industrial Co., Ltd.) was added to water to prepare stripping agent Q1. Based on the total mass of stripping agent Q1, the total mass of ammonium polyacrylate, sodium edetate and sodium tripolyphosphate The content by mass is 2% by mass.

[0032] (2) Condensation: Add the stripping agent Q1 into a static mixer and mix it with polyisoprene glue (the content of polyisoprene is 13% by weight, and the solvent is n-hexane) and mix evenly. Among them, the stripping agent The dosage of Q1 is 0.1kg / t dry glue. Put the mixed product into the coag...

Embodiment 2

[0035] This example is used to illustrate the coagulation method of the polyisoprene glue of the present invention.

[0036] (1) Preparation of stripping agent: 30 parts by mass of alkylnaphthalene sulfonate sodium salt (Jiangxi Simo Biochemical Co., Ltd., pH of 1% by weight aqueous solution is 7-8), 40 parts by mass of ammonium polyacrylate (Chengdu Wanrui Da Company, viscosity average molecular weight 3000), 10 parts by mass of sodium tripolyphosphate (Shandong Zhenhua Industrial Co., Ltd.) and 20 parts by mass of ethylenediaminetetraacetic acid were added to water to prepare stripping agent Q2, and the total amount of stripping agent Q2 Based on mass, the content of the total mass of alkylnaphthalenesulfonic acid sodium salt, ammonium polyacrylate, sodium tripolyphosphate and ethylenediaminetetraacetic acid is 2% by mass.

[0037] (2) Condensation: Add the stripping agent Q2 into the static mixer and mix it evenly with the polyisoprene glue (the content of polyisoprene is 1...

Embodiment 3

[0040] This example is used to illustrate the coagulation method of the polyisoprene glue of the present invention.

[0041] (1) Preparation of stripping agent: 70 parts by mass of sodium alkylnaphthalene sulfonate (Jiangxi Simo Biochemical Co., Ltd.), 15 parts by mass of sodium tripolyphosphate and 15 parts by mass of ethylenediaminetetraacetic acid (Changzhou Dayuan Chemical Industry Co., Ltd. Co., Ltd.) by adding water to make stripping agent Q3, based on the total mass of stripping agent Q3, the content of sodium alkylnaphthalene sulfonate, sodium tripolyphosphate and ethylenediaminetetraacetic acid is 2% by mass.

[0042] (2) Condensation: Add the stripping agent Q3 into a static mixer and mix it evenly with polyisoprene glue (the content of polyisoprene is 13% by weight, and the solvent is n-hexane), and the stripping agent The dosage of Q3 is 0.15kg / t dry glue. Put the mixed product into the coagulation kettle for coagulation, the temperature is 100°C, and the time is ...

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Abstract

The invention discloses an agglomeration method for a polyisoprene glue solution and a polyisoprene colloidal particle. The method includes: agglomerating the polyisoprene glue solution in the presence of a stripping agent. The stripping agent contains a dispersing agent and water. Based on the total mass of the stripping agent, the content of the dispersing agent is 1-5 mass%, and the dispersing agent is at least one of a sodium alkyl naphthalene sulfonate type dispersing agent, ammonium polyacrylate, magnesium chloride and calcium chloride. The method provided by the invention can make the agglomerated aqueous colloidal particle have uniform size and a diameter of 8-20mm, and the obtained aqueous colloidal particle has significantly decreased solvent content.

Description

technical field [0001] The invention relates to a method for agglomerating polyisoprene glue. Background technique [0002] Isoprene rubber (IR) is polyisoprene with high cis content obtained by the polymerization of monomer isoprene. Because of its structure and properties similar to natural rubber (NR), it is also called synthetic natural rubber. It can The replacement of NR is widely used in many fields such as tires, tapes, rubber hoses, rubber shoes, medical treatment, etc. It is a rubber type with the best comprehensive performance in synthetic rubber, and its output ranks third in synthetic rubber. [0003] The production process of isoprene rubber can be divided into several aspects such as catalyst preparation, isoprene polymerization, glue solution post-treatment and solvent recovery. In the glue solution from the polymerization section, the content of isoprene rubber is only more than ten percent, and most of the rest are solvents and unreacted monomers. These so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08C2/06
Inventor 杨亮亮欧阳素芳张杰辛益双谭金枚孙伟苏肇庆赵姜维
Owner CHINA PETROLEUM & CHEM CORP