Method of forming an organosilicon product using a membrane contactor to react a gas and liquid

Patent metadata

Field	Value
Publication number	US-10035881-B2
Application number	US-201515316272-A
Country	US
Kind code	B2
Filing date	Jun 9, 2015
Priority date	Jun 11, 2014
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

Various embodiments disclosed relate to method of forming organosilicon products. In various embodiments, the present invention provides a method of forming an organosilicon product that can include contacting a first side of a silicone membrane with a nonvolatile liquid reactant. The method can include contacting a second side of the membrane with a gaseous reactant. The contacting can be sufficient to react the gaseous reactant with the liquid reactant to form an organosilicon product on the first side of the silicone membrane. The silicone membrane can be substantially impermeable to the liquid reactant and substantially permeable to the gaseous reactant.

First claim

What is claimed is:

1. A method of forming an organosilicon product, the method comprising:
contacting a first side of a membrane with a nonvolatile liquid reactant; and
contacting a second side of the membrane with a gaseous reactant, wherein the contacting is sufficient to react the gaseous reactant with the liquid reactant to form an organosilicon product on the first side of the membrane, wherein the membrane is substantially impermeable to the liquid reactant and substantially permeable to the gaseous reactant,
wherein the liquid reactant comprises a compound having at least one silicon-bonded hydrogen atom, and the gaseous reactant comprises a compound having at least one carbon-carbon multiple bond or wherein the liquid reactant comprises a compound having at least one carbon-carbon multiple bond, and the gaseous reactant comprises a compound having at least one silicon-bonded hydrogen atom; and
wherein the organosilicon produced is a polysiloxane or an organosilane comprising a monosilane, disilane, trisilane, or polysilane.

2. The method of claim 1 , wherein the membrane is a silicone membrane.

3. The method of claim 1 , wherein the membrane is nonporous.

4. The method of claim 3 , wherein the membrane is a dense membrane.

5. The method of claim 1 , wherein the membrane has a thickness of from 1 to 300 μm.

6. The method of claim 1 , wherein the membrane is a free-standing membrane.

7. The method of claim 1 , wherein the membrane is a hollow fiber membrane module comprising a bundle of hollow fibers, wherein the fibers collectively have a bore side and a shell side, wherein the first side of the hollow fiber membrane is the bore side and the second side of the hollow fiber membrane is the shell side, or the first side of the hollow fiber membrane is the shell side and the second side of the hollow fiber membrane is the bore side.

8. The method of claim 1 , wherein the compound having at least one silicon-bonded hydrogen atom is an organopolysiloxane.

9. The method of claim 1 , wherein the compound having at least one silicon-bonded hydrogen atom is a silane or siloxane.

10. The method of claim 1 , wherein the compound having at least one carbon-carbon multiple bond is a polyether.

11. A method of forming an organosilicon product, the method comprising:
contacting a first side of a dense silicone membrane with a nonvolatile liquid reactant comprising a compound having at least one silicon-bonded hydrogen atom and a platinum group catalyst; and
contacting a second side of the membrane with a gaseous reactant comprising a compound having at least one carbon-carbon multiple bond, wherein the contacting is sufficient to react the gaseous reactant with the liquid reactant via a hydrosilylation reaction to form an organosilicon product on the first side of the silicone membrane, wherein the silicone membrane is substantially impermeable to the liquid reactant and substantially permeable to the gaseous reactant.

12. A method of forming an organosilicon product, the method comprising:
contacting a first side of a dense silicone membrane with a nonvolatile liquid reactant comprising a compound having at least one carbon-carbon multiple bond and a platinum group catalyst; and
contacting a second side of the membrane with a gaseous reactant comprising a compound having at least one silicon-bonded hydrogen atom, wherein the contacting is sufficient to react the gaseous reactant with the liquid reactant via a hydrosilylation reaction to form an organosilicon product on the first side of the silicone membrane, wherein the silicone membrane is substantially impermeable to the liquid reactant and substantially permeable to the gaseous reactant.

13. The method of claim 1 , wherein the membrane is a dense silicone membrane, the nonvolatile liquid reactant comprises and unsaturated organic compound and a hydrogenation catalyst, the gaseous reactant comprises hydrogen.

Assignees

• Dow Corning
• Dow Silicones Corp

Inventors

• Ahn Dongchan
• Dinh Paul C
• Ferritto Michael S
• Kleyer Don L
• Thompson James F

Classifications

• C08G2650/04

  End-capping · CPC title

• B01J2219/0295

  Synthetic organic materials · CPC title

• B01J19/2475

  Membrane reactors · CPC title

• B01J19/02

  Apparatus characterised by being constructed of material selected for its chemically-resistant properties · CPC title

• C08G65/336 Primary

  containing silicon · CPC title