Unlock instant, AI-driven research and patent intelligence for your innovation.

Mercapto silane

A technology of mercaptosilane and group, applied in the field of mercaptosilane, can solve the problems of impossible to omit mercaptosilane, short mixing time, etc.

Active Publication Date: 2012-05-02
EVONIK OPERATIONS GMBH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From an economical and technological point of view, however, short mixing times are essential, so far it has not been possible to omit the use of completely methoxy- and / or ethoxy-substituted mercaptosilanes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mercapto silane
  • Mercapto silane
  • Mercapto silane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0517] Weigh 59.63 g (0.25 mol) of 3-mercaptopropyltriethoxysilane (VP Si 263 from Degussa AG), 212.92 g (0.50 mol) of ethoxylated alcohol R 1 H, where R 5 is CH 2 -CH 2 , R 6 is an unsubstituted monovalent alkyl group containing 13 carbon atoms with an average m of 5 (Lutensol TO5, available from BASF AG), and 30 μl of titanium tetrabutoxide, and placed in a 500 ml four-necked flask at room temperature under a nitrogen atmosphere , equipped with distillation bridge, KPG stirrer and thermometer. The mixture was heated to 140°C. The ethanol formed is distilled off continuously. After 35 minutes, the reduced pressure was adjusted to 640 mbar and decreased to 50 mbar over the course of 3 hours. The reaction was terminated after 3 hours and 35 minutes. 245.37 g (98.6%) of a cloudy and slightly yellowish product were obtained. pass 1 H-NMR spectroscopy gave an average degree of transesterification of 2.0. Depend on 13 C-NMR can determine the distribution of long-chain br...

Embodiment 2

[0518] Embodiment 2 (comparative example)

[0519] 2,925.3 g of 3-mercaptopropyltriethoxysilane, 4,753.4 g of an alcohol mixture containing 72% dodecanol and 28% myristyl alcohol, and 30 μl of titanium tetrabutoxide were weighed and placed at room temperature under a nitrogen atmosphere. into a 4 l four-neck flask equipped with a distillation bridge, a KPG stirrer and a thermometer. The mixture was heated to 110°C. The ethanol formed is distilled off continuously. After 2 hours, the reduced pressure was continuously reduced to 50 mbar over the course of 3 hours. The reaction was terminated when 1,140 ml of ethanol was removed from the reaction mixture. 6.47 kg (98.6%) of a pale yellow liquid were obtained. pass 1 H-NMR spectroscopy gave an average degree of transesterification of 2.0.

Embodiment 3

[0520] Embodiment 3 (comparative example)

[0521] Weigh 150.02 g (0.63 mol) of 3-mercaptopropyltriethoxysilane, 151.2 g (1.26 mol) of diethylene glycol monomethyl ether and 75 μl of titanium tetrabutoxide, and place them at room temperature under a nitrogen atmosphere In a 500ml three-necked flask, it is equipped with an enhanced condenser, a stirrer and a thermometer. The mixture was heated to 80°C. The ethanol formed was removed under reduced pressure of 3 mbar.

[0522] The reaction was terminated after 8 hours. 237.84 g (97.6%) of a clear and slightly yellowish product were obtained. pass 1 H-NMR spectroscopy gave an average degree of transesterification of 2.0.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to mercaptosilanes of the formula I, wherein R<1> is an alkyl polyether group -O-(R<5>-O)m-R<6>. They are prepared by a procedure in which a silane of the formula II is subjected to a catatyzed reaction with an alkyl polyether R<1>-H, R<7>-OH being split off, the molar ratio of the alkyl polyethers R<1>-H to the silane of the formula II is at least 0.5 and R<7>-OH is separated off from the reaction mixture continuously or discontinuously. They can be used in shaped articles.

Description

technical field [0001] The present invention relates to mercaptosilane, its preparation method and use. Background technique [0002] The use of silanes as adhesion promoters is known. Therefore, between inorganic materials and organic materials, aminoalkyltrialkoxysilanes, methacryloxyalkyltrialkoxysilanes, polysulfanyltrialkoxysilanes and mercaptoalkyltrialkoxysilanes are used. Alkoxysilanes as adhesion promoters, as crosslinkers and surface modifiers (E.P. Plueddemann, "Silane Coupling Agents", 2nd ed. Plenum Press 1982). [0003] These adhesion promoters or coupling agents or binders form bonds for both the filler and the elastomer and thus achieve a good interaction between the filler surface and the elastomer. [0004] It is also known that the use of commercially available silane adhesion promoters with three alkoxy substituents on the silicon atom releases large amounts of alcohol during and after filler adhesion. Since trimethoxy-substituted silanes and triethoxy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/18
CPCY02T10/862
Inventor 奥利弗·克洛克曼菲利普·阿尔贝特安德烈·哈塞卡斯滕·科尔特雷蒙德·彼得
Owner EVONIK OPERATIONS GMBH