Elastomer compositions with silane functionalized silica as reinforcing fillers

Patent metadata

Field	Value
Publication number	US-2016304635-A1
Application number	US-201615193553-A
Country	US
Kind code	A1
Filing date	Jun 27, 2016
Priority date	Dec 22, 2011
Publication date	Oct 20, 2016
Grant date	—

Abstract

Certain embodiments described herein are directed to silane functionalized fillers that may be, for example, covalently coupled to a polymer. In some examples, devices that include the filler reinforced polymer compositions are also described.

First claim

What is claimed is:

1 . A method comprising:
reacting a filler with at least one silane coupling agent having the formula Q m -Si—Z n , where Z comprises one or more groups that can provide covalent attachment to the filler, Q is —R″-G or —CR′ 2 —CR′—R″-G, where R′ is a hydrogen or a fluorine, R″ is optional and is a linear or branched C1-C18 alkyl group, optionally containing one or more ether oxygen atoms and optionally fluorinated, G is a halogen, a nitrile group, or a vinyl group, and the sum of m+n is equal to four to covalently couple the silane to the filler; and reacting the covalently coupled silane-filler with a polymer to covalently couple the polymer to the covalently coupled silane-filler.

2 . The method of claim 1 , further comprising forming free radicals of the polymer during the reacting the covalently coupled silane-filler with a polymer to couple the polymer at unsaturated sites of the silane of the covalently coupled silane-filler.

3 . The method of claim 2 , further comprising reacting the filler with the at least one silane until substantially all surface sites of the filler comprise the silane coupling agent.

4 . The method of claim 3 , further comprising reacting the filler with the at least one silane coupling agent in the presence of an initiator.

5 . The method of claim 1 , further comprising processing the covalently coupled polymer-silane-filler using one or more of a mixer, a mill, a mold, a calendering device and an extruder.

6 . A silane coupling agent having the formula of Q m -Si—Z n , where Z comprises one or more groups that can provide covalent attachment to a filler, Q is —R″-G or —CR′ 2 —CR′—R″-G, where R′ is a hydrogen or a fluorine, R″ is optional and is a linear or branched C1-C18 alkyl group, optionally containing one or more ether oxygen atoms and optionally fluorinated, G is a halogen, a nitrile group, or a vinyl group, and the sum of m+n is equal to four.

7 . The silane coupling agent of claim 6 , in which Z is selected from a hydroxy, an alkoxy, an acyl-oxyl, a halogen and an amine.

8 . The silane coupling agent of claim 6 , selected from the following formulae:

Assignees

• Schlumberger Technology Corp

Inventors

• Tu Huilin
• Robisson Agathe

Classifications

• C08F8/42 Primary

  Introducing metal atoms or metal-containing groups · CPC title

• C07F7/1836

  Chemistry & Metallurgy · mapped topic

• C08F2810/40

  taking place solely at one end or both ends of the polymer backbone, i.e. not in the side or lateral chains · CPC title

• C07F7/1804

  Compounds having Si-O-C linkages (Si-O-acyl linkages C07F7/1896) · CPC title

• F04C2/1075 Primary

  Construction of the stationary member · CPC title