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Alkoxysilane polysulfides

A technology of alkoxysilane and polysulfide, which is applied in the fields of compounds of group 4/14 elements of the periodic table, organic chemistry, chemical instruments and methods, and can solve problems such as vulcanization viscosity

Active Publication Date: 2022-07-05
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The applicant company has described in its patent EP1326871 a novel hydroxysilane coupling agent which can overcome the following disadvantages of the mercaptosilane coupling agents as described in publications FR-A-2094859 and GB-A-1310379: Composition, which can cause problems of premature vulcanization (also known as "coking") and excessive viscosity in the original state

Method used

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  • Alkoxysilane polysulfides
  • Alkoxysilane polysulfides
  • Alkoxysilane polysulfides

Examples

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preparation example Construction

[0118] Preparation of rubber compositions

[0119] The rubber composition of the invention is prepared in a suitable mixer according to general procedures known to those skilled in the art using two successive preparation stages: up to a maximum of between 130°C and 200°C, preferably between 145°C and 185°C A first stage of thermomechanical manipulation or kneading (sometimes described as a "non-preparative" stage) at an elevated temperature, followed by a mechanical manipulation at a lower temperature, typically below 120°C, for example between 60°C and 100°C In the second stage (sometimes described as the "preparation" stage), the crosslinking or vulcanization system is incorporated during this final stage.

[0120] One or more additional stages can be envisaged aimed at preparing masterbatches of elastomers and reinforcing fillers intended to be introduced during the first processing stage.

[0121] Subsequently, the composition thus obtained is calendered into the form ...

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Abstract

The present invention relates to alkoxysilane polysulfides having the formula (I): wherein: R 1 , the same or different, each being a monovalent hydrocarbon group having 1 to 18 carbon atoms; R 2 , the same or different, each is a monovalent hydrocarbon group having 1 to 4 carbon atoms; R 3 , identical or different, each being a monovalent hydrocarbon group having 1 to 12 carbon atoms, preferably 1 to 6 carbon atoms; Z, identical or different, each being a divalent hydrocarbon bonding group comprising 1 to 16 carbon atoms ; x is an integer or fraction not less than 2; and n is an integer equal to 0, 1, or 2. (R 3 O) 3‑n (R 1 ) n Si–CH 2 –(R 2 )CH–Z‑S x ‑Z‑HC(R 2 )–CH 2 ‑Si(R 1 ) n (OR 3 ) 3‑n (I).

Description

technical field [0001] The present invention relates to multifunctional coupling agents, which can be used in particular for coupling reinforcing inorganic fillers and diene elastomers in rubber compositions intended, for example, for the manufacture of tires. Background technique [0002] It is well known that, in general, in order to obtain the best reinforcing properties imparted by the filler, it is recommended that the filler be present in the elastomeric matrix in a final form as finely divided as possible and distributed as uniformly as possible. In fact, these conditions can only be achieved to the extent that the filler, on the one hand, exhibits an excellent ability to introduce and deagglomerate into the matrix during mixing with the elastomer, and, on the other hand, to disperse homogeneously in the matrix. good ability. [0003] In a fully known manner, carbon blacks exhibit such capabilities, which are generally not the case with inorganic fillers. This is be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/18C08L21/00
CPCC07F7/1804B60C1/00C08K3/36C08K5/548C08L9/06C08L93/00C08L9/00C08K13/02C08J2307/00C08J2309/00C08K5/5419C08F236/06C08K5/372C08J3/24C08L2312/00C08F236/10C08L7/00B60C1/0016C07F7/081C08L2312/08C08F36/06C08F236/12C08F2810/20C08L2666/44C08F36/08C07F7/188
Inventor N·西博思A-F·萨利蒂S·迈耶J·M·安特洛米格斯P·巴雷罗B·A·哈内罗
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN