Coupling agents and compositions produced using them

• US 9,394,429 B2
• Filed: 08/14/2013
• Issued: 07/19/2016
• Est. Priority Date: 11/26/2008
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Original Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Inventors: Robisson, Agathe, Tu, Huilin, Ramier, Julien
• Primary Examiner(s): PENG, KUO LIANG
• Application Number:
  US13/967,130
• Publication Number:
  US 20130338312A1
• Time in Patent Office: 1,070 Days
• Field of Search: 523/213, 525/191
• US Class Current: 1/1
• CPC Class Codes: C07F 7/1804 Compounds having Si-O-C linkages Si-O-acyl linkages C07F7/1896
• CPC Class Codes: C08F 114/18 Monomers containing fluorine
• CPC Class Codes: C08F 14/18 Monomers containing fluorine
• CPC Class Codes: C08F 14/28 Hexafluoropropene
• CPC Class Codes: C08F 2/00 Processes of polymerisation
• CPC Class Codes: C08F 214/18 Monomers containing fluorine
• CPC Class Codes: C08K 5/5455 containing at least one group
• CPC Class Codes: C08K 5/5477 containing nitrogen in a heterocyclic ring

Abstract

Certain embodiments described herein are directed to silane coupling agents that may be used, for example, to covalently couple a polymer to a filler. In some examples, devices that include the polymer-silane coupling agent-filler compositions are also described.

Claims

1. A method comprising:

reacting a filler with at least one thermally stable silane coupling agent selected from the group consisting of TAIC-silane, TMAIC-silane, TAC-silane and combinations thereof to covalently couple the silane to the filler, wherein reactivity of a vinyl group in the at least one thermally stable silane coupling agent is substantially the same as a vinyl group in a curing co-agent for a fluropolymer;

reacting the covalently coupled silane-filler with the fluoropolymer to covalently couple the fluoropolymer to the covalently coupled silane-filler; and

reacting the filler with the at least one thermally stable silane until substantially all surface sites of the filler comprise the silane coupling agent.

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

3. The method of claim 1, further comprising reacting the filler with the at least one silane coupling agent in the presence of an initiator.

4. The method of claim 1, further comprising reacting the at least one silane coupling agent with the filler in the presence of a siloxane, wherein the siloxane blocks functional groups on the surface of the filler to prevent reaction with the at least one silane coupling agent.

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

6. The method of claim 1 wherein the silane coupling agent has a formula of: