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Silane modified oxidation filler or eka-filicate filler and its preparation method and application

A technology for oxidizing fillers and silane modification, which is applied in the direction of fibrous fillers, dyed organic silicon compounds, dyed low molecular organic compounds, etc., can solve the problem that the kinetic properties are not better than those of fillers and silanes, and achieve Good dynamic performance, high modulus, low viscosity effect

Inactive Publication Date: 2007-01-10
EVONIK OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The known silane-modified fillers have the disadvantage that their kinetics are not superior to those of fillers and silanes mixed in situ

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of silane-modified oxide filler or silicate-like filler B1

[0053] Put 3000g Ultrasil 7000 GR in the Henschel mixer first. While stirring at 23°C, 74g mercaptopropyltrimethoxysilane (VP Si 163) and 112.5g octyltriethoxysilane (VP Si 208) were sprayed on Ultasil 7000 GR successively. This material was then removed from the Hensechel mixer and the mixer was heated to 120°C. The silica-silane mixture was then poured into a hot mixer and reacted at 120°C for 30 minutes to completion with stirring.

Embodiment 2

[0055] Preparation of silane-modified oxide filler or silicate-like filler B2

[0056] Put 3000g Ultrasil 7000 GR in the Henschel mixer first. 74g mercaptopropyltrimethoxysilane (VP Si 163) and 112.5g octyltriethoxysilane (VP Si 208) were dissolved in 400g ethanol. Spray the silane solution onto Ultrasil 7000 GR at 23°C while stirring. This material was then taken out of the Henschel mixer, and the mixer was heated to 120°C. The silica-silane mixture was then poured into a hot mixer and reacted at 120°C for 30 minutes to completion with stirring.

Embodiment 3

[0058] Silane-modified oxidized filler or silicate-like filler rubber technology detection

[0059] The formula used for the rubber compound is given in Table 1. The unit phr in the table represents parts by weight relative to 100 parts of crude rubber used. The general method used to prepare rubber compounds and their vulcanizates has been described in "Rubber Technical Handbook W. Hofmann, Hanser Publishing 1994".

[0060] Reference mixture 1

[0061] The polymer VSL 5025-1 is a solution polymerized SBR-copolymer of Bayer, and the copolymer has a styrene content of 25% by weight and a butadiene content of 75% by weight. The copolymer contains 37.5 phr of oil and has a Mooney-viscosity (ML1+4 / 100°C) of 50±4.

[0062] The polymer BuNa CB24 is a Bayer company's cis 1,4-polybutadiene (neodymium type), of which at least 97% is cis 1,4-content, 1% 1,2-content and a gate of 44±5 Ni-viscosity.

[0063] Chemetall's Naftolen ZD is used as an aromatic oil. Vulkanox 4020 is Baye...

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PUM

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Abstract

Oxide or silicate fillers modified with a mercapto silane and an alkylsilane and / or with a silicone oil are new. Oxide or silicate fillers modified with a mercapto silane of formula (R<1>)3Si-R<2>-SH (I) and an alkylsilane of formula (R<1>)3Si-R<3> (II). (1) a process for producing the modified fillers, comprising mixing an oxide or silicate filler with (I) and (II) and / or with a silicone oil;Silane-modified oxidic or silicate-like filler, wherein at least one oxidic or silicate-like filler has been modified with mercaptosilane of the general formula (I), and an alkylsilane of the general formula (II) and / or silicone oil, is prepared by mixing at least one oxidic or silicate-like filler with a mercaptosilane of formula I and an alkylsilane of formula II and / or silicone oil. The silane-modified oxidic or silicate-like fillers are used in rubber mixtures.

Description

Technical field [0001] The invention relates to a silane-modified oxide filler or silicate-like filler, and a preparation method and application thereof. Background technique [0002] The oxidized or silicate compound is treated with an organosilicon compound, so that the adhesion between the inorganic filler and the applied organic polymer is enhanced in the filler-reinforced elastomer through this treatment, so as to improve the filler in the polymer The performance of this method is well known. [0003] It is known from DE 2141159, DE 2212239, US 3,978,103 and US 4,048,206 that sulfur-containing organosilicon compounds such as bis-(3-triethoxysilylpropyl)tetrasulfane or 3-mercaptopropyltriethoxy The base silane is used as a silane adhesion promoter or reinforcing additive in the compound rubber filled with oxide, especially in the tread of automobile tires and other parts. The application of mercaptosilane in the rubber compound for tire tread can be known from FR-A152,094,859...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C3/08C08K5/54C08L21/00C08K9/06C09C1/28C09C1/30C09C3/12
CPCC09C1/3081C09C3/12C08K9/06C08L21/00C01P2006/12
Inventor 汉斯-德特勒夫·卢京斯兰德安德烈·哈塞卡尔斯滕·考尔特
Owner EVONIK OPERATIONS GMBH
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