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Rubber mixtures

一种橡胶混合物、橡胶的技术，应用在电缆/导体制造、轮胎零部件、应用等方向，能够解决混合物粘度增加、加工复杂化等问题

Inactive Publication Date: 2007-02-21
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A disadvantage of the known mercaptoalkyltrialkoxysilanes in sulfur-crosslinked rubber mixtures is an undesirable premature reaction with the rubber during the compounding process, which complicates processing due to the increased viscosity of the mixture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0166] HS-CH 2 -CH 2 -CH 2 -Si(O-CH 2 -CH 2 ) 3 Preparation of N

[0167] (Based on J. Gen. Chem. USSR (EN), 45, 1975, 1618)

[0168] Under reduced pressure, 110-140°C and Ti(OBu) 4 In the presence of solvent-free transesterification in the course of 180-360 minutes, from commercially available HS-CH 2 -CH 2 -CH 2 -Si(O-CH 2 -CH 3 ) 3 Synthesis of HS-CH with equimolar amount of triethanolamine 2 -CH 2 -CH 2 -Si(O-CH 2 -CH 2 ) 3 N. The ethanol formed is distilled off.

Embodiment 2

[0170] Cl-CH 2 -CH 2 -CH 2 -Si(O-CH 2 -CH 2 ) 3 Preparation of N

[0171] (Based on J. Gen. Chem. USSR (EN), 45, 1975, 1618)

[0172] Under reduced pressure, 120-160°C and Ti(OBu) 4 In the presence of , by solvent-free transesterification in the course of 180-360 minutes, from commercially available Cl-CH 2 -CH 2 -CH 2 -Si(O-CH 2 -CH 3 ) 3 Synthesis of Cl-CH with equimolar amount of triethanolamine 2 -CH 2 -CH 2 -Si(O-CH 2 -CH 2 ) 3 N. The ethanol formed is distilled off.

Embodiment 3

[0173] Embodiment 3 rubber technology research

[0174] The formulations of the rubber compounds are given in Table 1 below. The unit phr here refers to a ratio based on 100 parts of crude rubber used. The organosilicon compounds are used in equimolar amounts, ie amounts of the same substance.

[0175] The following couplers were investigated:

[0176] In mixture 1: mercaptopropyltriethoxysilane, VPSi 263 from Degussa AG (comparative example)

[0177] In mixture 2: organosilicon compound according to example 1

[0178] The book "Rubber Technology Handbook", W. Hofmann, Hanser Verlag 1994 describes general methods for preparing rubber mixtures and their vulcanized products.

[0179] Mixture 1

Mercaptopropyltriethoxysilane

[phr]

mixture 2

Organosiliconation according to Example 1

compound

[phr]

The first stage

Buna VSL 5025-1

Buna CB 24

Ultrasil 7000GR

Silicone compound

ZnO

st...

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PUM

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Abstract

Rubber mixtures containing at least one rubber and an organosilicon compound of the general formula (I) (Q-)kG-Si(-O-CX<1>X<2>-CX<1>X<3>-)3N. The rubber mixture is prepared by mixing at least one rubber and an organosilicon compound of the formula (I). The rubber mixtures can be used for the production of mouldings.

Description

technical field [0001] The present invention relates to a rubber mixture, a process for its preparation and its use. Background technique [0002] US 4,048,206 discloses the general formula X'-Z'-Si(OR') 3 Synthesis of compounds of N, where X' can be a halogen or HS-, Z' can be a divalent hydrocarbon, and R' can be -CH 2 -CH 2 -or-CH(CH 3 )-CH 2 -. [0003] Furthermore, the synthesis of NCS-CH by transesterification of the corresponding methoxysilanes with triethanolamine is known from J. Gen. Chem. USSR (EN) 45(6), 1975, 1366 (Voronkov et al.) 2 -Si(O-CH 2 -CH 2 ) 3 N and NCS-CH 2 -CH 2 -CH 2 -Si(O-CH 2 -CH 2 ) 3 N, and methanol is released. [0004] EP 0 919 558 discloses the general formula R-Si(O-CR′R″-CR′R′) 3 Silane derivatives of N, wherein at least one R" is an alkyleneoxy group. These silane derivatives can be used in silicone compounds. [0005] In particular, US 4,002,594 discloses the use of mercaptoalkyltrialkoxysilanes as s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08K5/541B60C1/00A43B13/04C09K3/10H01B13/22
CPCC08K5/549Y10T152/10C08K5/548C08K9/06C08K9/12C08L21/00C08L19/00C08K3/34
Inventor 卡斯滕·科尔特安德烈·哈塞苏珊·维茨舍奥利弗·克洛克曼菲利普·阿尔贝特
Owner EVONIK DEGUSSA GMBH