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Method for producing hydrogenated nitrile rubber and hnbr compositions thereof

A technology of hydrogenated nitrile rubber and nitrile rubber, applied in the field of hydrogenated nitrile rubber

Pending Publication Date: 2021-03-09
ARLANXEO DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0034] A further problem is that of providing a method for the hydrogenation of NBR using metal catalysts in order to produce HNBR with excellent aging characteristics without the need for a method step for the removal of noble metals at the end of the hydrogenation reaction

Method used

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  • Method for producing hydrogenated nitrile rubber and hnbr compositions thereof
  • Method for producing hydrogenated nitrile rubber and hnbr compositions thereof
  • Method for producing hydrogenated nitrile rubber and hnbr compositions thereof

Examples

Experimental program
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Effect test

example

[0133] materials used

[0134]

[0135] mooney aging

[0136] To assess Mooney aging, the change in Mooney viscosity was measured after an exemplary aging process. The values ​​for the Mooney viscosity (ML1+4 at 100° C.) were determined in each case by means of a shear disc viscometer according to ASTM D1646-07. Two test samples were cut from the rubber. Place the sample to be aged on the intermediate rack in an air-circulating drying oven heated to 140 °C. The samples were kept at 140°C for 4 days in the air circulating drying oven.

[0137] Mooney viscosities were determined from unaged and aged samples. ΔMV is derived from the difference between the measured values ​​of aged and unaged samples.

[0138] gel content

[0139] In about 20 ml of methyl ethyl ketone (MEK), 0.1 g to 0.2 g of polymer is dispersed or the soluble polymer fraction is dissolved. After 18 hours, the insoluble dispersed fraction was precipitated by centrifugation (25 000 rpm), the supernatant ...

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Abstract

The present invention relates to a method for producing hydrogenated nitrile rubber (HNBR) having good ageing properties in the presence of ruthenium, palladium or rhodium compounds and also to the hydrogenated nitrile rubber produced by this method and HNBR compositions thereof.

Description

technical field [0001] The present invention relates to a process for the production of hydrogenated nitrile rubber (HNBR) having good aging properties in the presence of ruthenium compounds, palladium compounds or rhodium compounds and also to the hydrogenated nitrile rubber and its HNBR produced by this process combination. Background technique [0002] For the production of hydrogenated nitrile rubber (HNBR) (i.e. for the hydrogenation of unsaturated nitrile rubber (NBR) to form hydrogenated nitrile rubber), typically using ; 9th transition group: Rh; 10th transition group: Pd) metals of different noble metal catalysts. Both homogeneous and heterogeneous catalysis methods are used herein. With both process types, the subsequent removal or recovery of the catalyst is often complex and technically demanding. [0003] Although in the case of homogeneous catalysts, resin beds are used to remove precious metals (eg, non-homogeneous catalysts are removed by filtration). How...

Claims

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Application Information

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IPC IPC(8): C08C19/02C08L15/00
CPCC08C19/02C08L15/005C08F236/12C08F8/32C08K5/14C08L2312/00
Inventor 卡罗拉·施奈德斯萨拉·戴维苏珊娜·利伯
Owner ARLANXEO DEUT GMBH
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