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Raw butadiene rubber rubber and preparation method thereof

A technology of cis-butadiene rubber and raw rubber, applied in the field of raw rubber, can solve the problems of limited effect of cis-butadiene rubber on tensile strength and tear strength, and save technology development and production costs, great value, and technical transformation. low investment

Active Publication Date: 2022-02-11
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the effect of above-mentioned method promoting butadiene rubber tensile strength and tear strength is limited, therefore, need to develop a kind of butadiene rubber raw rubber and its preparation method that has tensile strength and tear strength all better

Method used

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  • Raw butadiene rubber rubber and preparation method thereof
  • Raw butadiene rubber rubber and preparation method thereof
  • Raw butadiene rubber rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method of preparing a tannut rubber gum comprising the following steps:

[0039]S1, a refined butadiene monomer, a cycloalkylene solvent, and a catalyst together with the polymerization reactor, mixed, the polymerization reaction, the reaction temperature is 75 ° C, the reaction time is 1.5 h, the conversion rate is 75 ~ 85%, the reaction After getting the collapse;

[0040] S2, the gel prepared by step S1 is mixed with the terminator, the antioxidant, and the retardation is fed into the stopping tank, and the mixture is uniformly obtained, and the mixture is transferred to the gum tank;

[0041] S3, under conditions of temperature of 95 ° C, the mixing liquid in step S2 is sent to the condenser, and mixed with a hydrocarboxylate aqueous solution of a polycarboxylate is mixed for agglomerate reaction, stir for 1 h, condensed rubber particles, remove solvent and unreacted Butadiene monomer; dried solvent and unreacted butadiene monomer to the recovery refining system cycle...

Embodiment 2

[0047] A method of preparing a tannut rubber gum comprising the following steps:

[0048] S1, a refined butadiene monomer, a cycloalkylene solvent, and a catalyst together with the polymerization reactor, mixed, the polymerization reaction, the reaction temperature is 75 ° C, the reaction time is 1.5 h, the conversion rate is 75 ~ 85%, the reaction After getting the collapse;

[0049] S2, the gel prepared by step S1 is mixed with the terminator, the antioxidant, and the retardation is fed into the stopping tank, and the mixture is uniformly obtained, and the mixture is transferred to the gum tank;

[0050] S3, under conditions of temperature of 95 ° C, the mixing liquid in step S2 is sent to the condenser, and mixed with a hydrocarboxylate aqueous solution of a polycarboxylate is mixed for agglomerate reaction, stir for 1 h, condensed rubber particles, remove solvent and unreacted Butadiene monomer; dried solvent and unreacted butadiene monomer to the recovery refining system cycl...

Embodiment 3

[0056] A method of preparing a tannut rubber gum comprising the following steps:

[0057] S1, a refined butadiene monomer, a cycloalkylene solvent, and a catalyst together with the polymerization reactor, mixed, the polymerization reaction, the reaction temperature is 75 ° C, the reaction time is 1.5 h, the conversion rate is 75 ~ 85%, the reaction After getting the collapse;

[0058] S2, the gel prepared by step S1 is mixed with the terminator, the antioxidant, and the retardation is fed into the stopping tank, and the mixture is uniformly obtained, and the mixture is transferred to the gum tank;

[0059] S3, under conditions of temperature of 95 ° C, the mixing liquid in step S2 is sent to the condenser, and mixed with a hydrocarboxylate aqueous solution of a polycarboxylate is mixed for agglomerate reaction, stir for 1 h, condensed rubber particles, remove solvent and unreacted Butadiene monomer; dried solvent and unreacted butadiene monomer to the recovery refining system cycl...

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Abstract

The invention relates to the technical field of raw rubber, and particularly discloses raw butadiene rubber and a preparation method thereof. The method comprises the following steps: S1, mixing a refined butadiene monomer, a solvent and a catalyst, and carrying out a polymerization reaction to obtain a rubber solution; S2, mixing the rubber solution prepared in the step S1 with a terminating agent and an anti-aging agent, and carrying out a termination reaction to obtain a mixed solution; S3, at the temperature of 70-98 DEG C, mixing and stirring the mixed solution obtained in the step S2 and a dispersing agent, carrying out condensation reaction, condensing out rubber particles, and removing the solvent and unreacted butadiene monomer; and S4, washing the rubber particles with a rubber washing solution, and after the rubber particles are washed, carrying out extrusion dehydration, drying, briquetting and packaging to obtain the raw butadiene rubber. According to the method, the tensile strength and the tearing strength of the raw butadiene rubber are improved in the rubber washing process stage in the raw butadiene rubber production process, the existing process does not need to be greatly changed, and the technical improvement investment is relatively low.

Description

Technical field [0001] The present invention relates to the field of rubber raw rubber, in particular, to a tanurid rubber gum and a preparation method thereof. Background technique [0002] With the rapid development of my country's tire market and rubber products industry, the production of synthetic rubber is also growing year by year. The synthetic rubber gel species produced in my country mainly includes eight categories: butyrene rubber (SBR), tental rubber (BR), chloroprene (Cr), nitrile rubber (NBR), butyl rubber (IIR), ethylene rubber (EPR), polyisoprene rubber (IR) and butrene thermoplastic elastomers (SBS). [0003] The synthetic rubber of a structurally formed by a butadiene monomer polymerizes, depending on the catalyst, can be divided into nickel-based tetudous rubber, cobalt-duty rubber, titanium tental rubber, and rare earth relief rubber. Due to the molecular chain without the side group, the molecular weight is small, so the tental rubber has better elasticity, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C3/02C08F136/06
CPCC08C3/02C08F136/06Y02T10/86
Inventor 许晋国姜武会王大庆倪春霞梁伟强梁志斌
Owner CHINA PETROLEUM & CHEM CORP
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