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Rubber mixtures

A rubber compound, rubber technology, used in transportation and packaging, thin material handling, etc., can solve problems such as high hysteresis loss and poor dynamic behavior

Active Publication Date: 2012-10-17
EVONIK OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A known drawback of organo(alkyl polyether silane)-containing rubber compounds is their poor dynamic behavior, including high hysteresis losses

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0131] Example 1: Rubber Mixture

[0132] The main mixing specification for the rubber mixture is listed in Table 1 below. The unit of phr used here is part by weight, based on 100 parts of crude rubber used.

[0133] The general method for producing rubber compounds and their vulcanizates is described in the book "Rubber Technology Handbook", W. Hofmann, Hanser Verlag 1994.

[0134] Table 1: Main mixing methods

[0135]

[0136] polymer EP G 5455 is an ethylene propylene diene rubber with medium degree of unsaturation (ENB content = 4,3) containing 50 phr paraffin oil from Lanxess. Its Mooney viscosity (Mooney viscosity) (UML (1+4) 125° C.) was 46.

[0137] 7000GR is highly disperse silica from Evonik Degussa GmbH with a BET surface area of ​​170m 2 / g.

[0138] Lipoxol 4000 from Sasol is polyethylene glycol 4000, Sunpar 150 from Holly Corporation is paraffin oil, Vulkacit Mercapto C from Lanxess is 2-mercaptobenzothiazole (MBT), Perkacit TBzTD (tetrabenzylthiuram...

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Abstract

A rubber mixture, comprising (A) at least one rubber selected from the group of ethylene-propylene-diene copolymer (EPDM), ethylene-propylene copolymer (EPM), chloroprene rubber (CR), chloropolyethylene (CM), chloro-isobutene-isoprene (chlorobutyl) rubber (CIIR), chlorosulfonyl polyethylene (CSM), etylene-vinyl acetate copolymer (EAM), alkyl acrylate copolymer (ACM), polyester polyurethan (AU), polyether polyurethane (EU), bromo-isobutene-isoprene (bromobutyl)rubber (BIIR), polychlorotrifluoroethylene (CFM), isobutene-isoprene rubber (butyl rubber, IIR), isobutene rubber (IM), polyisoprene (IR), thermoplastic polyester polyurethane (YAU), thermoplastic polyether polyurethane (YEU), silicone rubber with methyl groups on the polymer chain (MQ), hydrogenated acrylonitrile-butadiene rubber (HNBR), acrylonitrile-butadiene rubber (NBR) or carboxylated acrylonitrile-butadiene rubber (XNBR), (B) at least one oxidic filler, and (C) at least one silicon containing azodicarbamide of the general formula I (R 1 ) 3-a (R 2 ) a Si-R I -NH-C(O) -N=N-C (O)-NH-R I -Si(R 1 ) 3-a (R 2 ) a (I) . The rubber mixture is produced by mixing at least one rubber, at least one oxidic filler, and at least one silicon containing azodicarbamide of the general formula I. It may be used for moldings.

Description

technical field [0001] The present invention relates to rubber mixtures, their preparation and use. Background technique [0002] DE 102010003387.1 discloses the 3 -X 1 -C(O)-N=N-C(O)-X 1 -R 4 and (R 1 ) 3-a (R 2 ) a Si-R I -NH 2 A method for preparing silicon-containing azodicarbonamide by reaction. [0003] DE 2704506 discloses a compound with the structure Y-X-CO-N=N-CO-X 1 - Compounds of Z and their use in rubber substances containing fillers. [0004] US 20090234066A1 further discloses compounds with the structure A-CO-N=N-CO-Z-G, which are used in isoprene rubber together with sulfur-containing silanes. [0005] US 20090186961 discloses substances having the structure A-CO-N=N-CO-Z-G for use in isoprene rubber together with coating agents. [0006] A disadvantage of known organo(alkyl polyether silane)-containing rubber mixtures is their poor dynamic behavior, including high hysteresis losses. Contents of the invention [0007] It is an object of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K5/5455C08K13/06C08K9/12
CPCC08K5/5455C08K5/544Y10T428/1352C08K3/36C08L21/00C08L23/16C08K5/54C08K5/40C08K5/47C08J3/20C08L9/00
Inventor A·布卢默O·克洛克曼D·克勒霍夫
Owner EVONIK OPERATIONS GMBH
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