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Dispersants for hydrocarbon polymers and method for preparing dispersions

A hydrocarbon polymer and dispersion system technology, applied in the field of olefin or diene polymers or copolymers, can solve the problem of reducing catalyst and solvent removal efficiency, large water vapor consumption, oil content of colloidal particles and volatilization of finished rubber. It is difficult to effectively reduce the problem of

Active Publication Date: 2016-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN102040676A discloses a method for removing solvent from butadiene rubber, which mainly solves the problems of high consumption of solvent oil and large consumption of water vapor in the prior art
However, the inherent cohesiveness and complete insolubility of butadiene rubber particles make them easy to agglomerate due to mutual collision, which reduces the removal efficiency of catalysts and solvents, and the oil content in the particles and the finished rubber It is difficult to effectively reduce the volatile matter

Method used

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  • Dispersants for hydrocarbon polymers and method for preparing dispersions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Mix octadec-9-enoic acid (A), pentaerythritol (B) and 2-hydroxypropane-1,2,3-tricarboxylate sodium (C) under stirring at 25°C, and the viscosity is 7800mPa In the solution of polybutadiene and hexane of s, add water again, make component A, B and C be respectively 0.25%, 0.28% and 0.25% based on the quality of polybutadiene polymer, wherein hexane and The mass ratio of the polybutadiene polymer was 8.4, and the mass ratio of water to the polybutadiene polymer was 2.5. Mix evenly, the viscosity of the obtained polymer dispersion system is 4500mPa·s, and the diameter of the dispersed phase is 10-20μm.

Embodiment 2

[0054] A hexane solution containing polybutadiene (viscosity 6300mPa·s) was obtained by continuous solution polymerization, and octadec-9-enoic acid (A) and butanol ( B) and sodium butane tetracarboxylate (C), and add water so that components A, B, and C are respectively 1.1%, 0.3%, and 0.3% based on the mass of polybutadiene, and hexane and polybutadiene The mass ratio of polymer is 8.4, and the mass ratio of water to polymer is 3.1. Mix evenly by a mixer, the viscosity of the obtained dispersion system is 1700mPa·s, and the diameter of the dispersed phase is 3~20μm.

Embodiment 3

[0056] Under stirring at 25°C, add heptadecanic acid (A), tert-butanol (B), sodium butane tetracarboxylate (C) and sodium oleate (C) to polybutylene with a viscosity of 7500mPa·s in sequence. In the solution of diene and heptane, add water again, make component A, B and C be respectively 1.0%, 0.18% and 0.3% based on polybutadiene mass, the mass ratio of heptane and polymer is 7.4, water The mass ratio to the polymer is 2.2, wherein the mass ratio of sodium butane tetracarboxylate to sodium oleate is 2:1. Mix evenly, the viscosity of the obtained dispersion system is 4200mPa·s, and the diameter of the dispersed phase is 5~15μm.

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Abstract

The invention provides a dispersant for a hydrocarbon polymer, and a method for preparing a hydrocarbon polymer dispersion system by using it. The dispersant for a hydrocarbon polymer comprises carboxylic acid, alcohol, and at least one of alkali metal salts, alkali earth metal salts, ammonium salts and mixtures thereof. The method for preparing a hydrocarbon polymer dispersion system is characterized in that the dispersant is mixed with a water and hydrocarbon polymer solution. The low viscosity polymer / water uniformly-dispersed composite system can be formed through the method, so the polymer coagulation effect is improved, the catalyst removal effect is improved, the hydrocarbon compound removal effect is improved, water consumption is saved, the product quality is improved, saving energy and consumption reduction are realized, and the entrance of the dispersant to the water system is reduced, thereby the sewage volume is reduced, and an emission reduction effect is realized. Additionally, the dispersant is in favor of the application of polymers through technologies and methods.

Description

technical field [0001] The present invention generally relates to dispersants for hydrocarbon polymers and methods for preparing dispersions using the dispersants. In particular, the dispersants of the invention are suitable for polymers or copolymers of olefins or dienes. After mixing the hydrocarbon polymer with the hydrocarbon compound, the dispersant of the present invention and water, a dispersion system with a dispersed phase diameter of about 1 μm to about 1000 μm and a viscosity lower than about 7000 mPa·s can be prepared. The dispersant of the present invention can be used in the preparation of polymer emulsions or in the coagulation process in the production process of polymers. Background technique [0002] In the polymerization of olefins or dienes to prepare corresponding polymers, solution polymerization or bulk polymerization is usually used, such as ethylene-propylene rubber is prepared by solution copolymerization of ethylene, propylene and dienes, or butad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08C2/06C08C2/02C08C2/04C08F6/12C08F6/10C08F6/08C08F6/28C08J3/07
Inventor 吴一弦华炜朱寒马良兴郝雁钦赵西明郑国军段常青祁俊牟奇军
Owner CHINA PETROLEUM & CHEM CORP