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A kind of preparation method of oil-extended polydiene rubber

A polydiene glue and polydiene technology are applied in the field of rubber, can solve problems such as complicated processes, and achieve the effect of simplifying the preparation method

Active Publication Date: 2019-11-22
青岛瑞林材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of the dry oil-extended process or the wet oil-extended process, there are problems with complex processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The invention provides a kind of preparation method of oil-extended polydiene rubber, comprises the steps:

[0019] In an anhydrous and oxygen-free airtight container, the reaction solution including diene monomer, rare earth composite catalyst, extension oil and saturated hydrocarbon solvent is polymerized to obtain polydiene glue;

[0020] The polydiene glue is coagulated to obtain oil-extended polydiene rubber.

[0021] The invention mixes diene monomer, rare earth composite catalyst, extension oil and saturated hydrocarbon solvent to obtain reaction solution.

[0022] In the present invention, the diene monomer is preferably butadiene and / or isoprene. In the present invention, when the diene is butadiene, the polydiene glue is polybutadiene glue; when the diene is isoprene, the polydiene glue is It is polyisoprene glue; when the diene is butadiene and isoprene, the polydiene glue is poly(butadiene)-(isoprene) glue. In the present invention, there is no special li...

Embodiment 1

[0044] Under anhydrous and oxygen-free conditions, add 7ml of isoprene monomer and 6ml of butadiene in naphthenic oil and hexane to a clean and dry 100ml polymerization bottle in sequence. The molar ratio of butadiene to isoprene is 1:1, the mass ratio of naphthenic oil to monomer is 35:100; then add 1ml of prepared catalyst solution, the molar ratio of rare earth compound, alkylaluminum and halogen-containing compound in the catalyst is [Nd] / [Al] / [Cl]=1 / 15 / 2, the molar ratio of the rare earth compound in the catalyst to the monomer is [Nd] / [M]=4.0×10 -4 : 1; the polymerization bottle is put into a constant temperature water bath, under the condition of a constant temperature of 50°C, react for 5 hours to obtain poly(isoprene)-(butadiene) glue; the rare earth compound in the catalyst is neodymium neodecanoate , the alkylaluminum is triisobutylaluminum, and the halogen-containing compound is diisobutylaluminum chloride;

[0045] The poly(isoprene)-(butadiene) glue is coagulat...

Embodiment 2

[0048] Under anhydrous and oxygen-free conditions, add 17.5ml of isoprene monomer and 15ml of butadiene in naphthene oil to a clean and dry 100ml polymerization bottle in sequence, and the molar ratio of butadiene to isoprene 1:1, the mass ratio of naphthenic oil and monomer is 20:100; Then add 2.5ml prepared catalyst solution, the mol ratio of the halogen element in the rare earth compound, alkylaluminum and halogen-containing compound in the catalyst is [ Nd] / [Al] / [Cl]=1 / 15 / 2, the molar ratio of rare earth compound and monomer in the catalyst is [Nd] / [M]=4.2×10 -4 : 1; the polymerization bottle is put into a constant temperature water bath, under the condition of a constant temperature of 50°C, react for 5 hours to obtain poly(isoprene)-(butadiene) glue; the rare earth compound in the catalyst is neodymium neodecanoate , the alkylaluminum is triisobutylaluminum, and the halogen-containing compound is diisobutylaluminum chloride;

[0049] The poly(isoprene)-(butadiene) glue ...

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Abstract

The invention provides a preparation method of oil-extended polydiolefin rubber. A reaction solution containing a diene monomer, a rare earth composite catalyst, extending oil and a saturated hydrocarbon solvent is subjected to a polymerization reaction in a water-free and oxygen-free closed container, and a polydiolefin rubber solution is obtained; the polydiolefin rubber solution is condensed and oil-extended polydiolefin rubber is obtained. The solvation of the saturated hydrocarbon solvent is used, the extending oil and the saturated hydrocarbon solvent are taken as reaction media for thepolymerization reaction, the oil-extended polydiolefin rubber is obtained through condensation, the synthesis process and the oil extending process are performed synchronously, and the preparation method of the oil-extended polydiolefin rubber is greatly simplified.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a preparation method of oil-extended polydiene rubber. Background technique [0002] Oil-extended rubber refers to a mixture filled with a certain amount of mineral oil in rubber (including natural rubber, synthetic rubber, etc.). By filling rubber with oil, the Mooney viscosity of raw rubber can be reduced, the processing performance of raw rubber can be greatly improved, and the physical and mechanical properties of rubber, such as wet skid resistance and low temperature resistance, can also be improved to a certain extent. The production cost of rubber can be reduced. [0003] In the prior art, the production of oil-extended rubber mainly adopts a dry oil-extended process or a wet oil-extended process. The dry oil-extended process is to mix the extended oil and rubber in a mixer, and disperse the extended oil in the rubber through mechanical mixing. This method consumes a lot of energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F236/08C08F236/06C08F136/06C08F136/08C08F4/54C08F2/06C08L9/00C08L91/00
Inventor 郎秀瑞姜波
Owner 青岛瑞林材料科技有限公司