Mixtures of silicon-containing coupling reagents
A technology of silicon coupling agent and mixture, applied in the field of mixture containing silicon coupling agent, can solve problems such as poor processing performance and kinetic performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[2371] In a 500ml flask equipped with a stirrer, thermometer and distillation bridge, N 2 As an inert gas, 59.5 g of 3-mercaptopropyl(triethoxysilane) (0.25 mol) was used as a starting material. 210 g of Lutensol TO 5 (0.5 mol) to which 3% by weight of water (based on silane) had been previously added were added to the mixture. The reaction mixture was vigorously stirred for several minutes, then 0.05% by weight of titanium tetrabutoxide (based on the silane used) was added with stirring. The mixture was heated to 80°C for 1 hour and then to 140°C for 1 hour. Thereafter, the pressure was slowly reduced to 50 mbar and the ethanol produced was removed by distillation. After 7 hours of reaction, the mixture was cooled and depressurized, and then a further 0.05% by weight of titanium tetrabutoxide (based on the silane used) was added. The mixture was heated again to 140° C. and the pressure was slowly reduced to 50 mbar. This yielded 245 g of a colorless slightly cloudy liquid...
Embodiment 2
[2373] In a 500ml flask with stirrer, thermometer and distillation bridge, N 2 As an inert gas, 59.5 g of 3-mercaptopropyl(triethoxysilane) (0.25 mol) was used as a starting material. 210 g of Lutensol TO 5 (0.5 mol) to which 6% by weight of water (based on silane) had been previously added were added to the mixture.
[2374] The reaction mixture was vigorously stirred for several minutes, then 0.05% by weight of titanium tetrabutoxide (based on the silane used) was added with stirring. The mixture was heated to 80°C for 1 hour, then to 140°C for 1 hour. Thereafter, the pressure was slowly reduced to 50 mbar and the ethanol produced was removed by distillation. After 7 hours of reaction, the mixture was cooled and depressurized before an additional 0.05% (w / w) titanium tetrabutoxide (based on the silane used) was added. The mixture was heated again to 140° C. and the pressure was slowly reduced to 50 mbar. This yielded 235 g of a colorless slightly cloudy liquid.
[2375]...
Embodiment 3
[2379] Vulcanization test
[2380] A description of the mixing technique used for the rubber mixture is given in Table 2 below. The unit phr here refers to the weight ratio based on 100 parts of natural rubber used. The organosilicon compounds are used in equimolar amounts, ie the same molar amounts are used.
[2381] The general production process of rubber mixtures and their vulcanized products is described in "Rubber Technology Handbook", W. Hofmann, Hanser Verlag 1994".
[2382] Table 2:
[2383] Mixture 1 Mixture 2 Mixture 3
[2384] The polymer VSL 5025-1 is a solution-polymerized SBR copolymer from Bayer AG with a styrene content of 25% by weight and a butadiene content of 75% by weight. The copolymer contained 37.5 phr of oil and had a Mooney viscosity (ML 1+4 / 100°C) of 50.
[2385] Polymer Buna CB 24 is cis-1,4-polybutadiene (Nd type) from Bayer AG with a cis-1,4 content of at least 96% and a Mooney viscosity of 44±5 .
[2386] Ultrasil 7000 GR is a re...
PUM
| Property | Measurement | Unit |
|---|---|---|
| melting point | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More