Polyols derived from farnesene for polyurethanes

Patent metadata

Field	Value
Publication number	US-9994669-B2
Application number	US-201614989140-A
Country	US
Kind code	B2
Filing date	Jan 6, 2016
Priority date	Jan 6, 2016
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A composition is provided for making a polyurethane that may be incorporated in various products, such as a sealant, a coating, a caulk, an electric potting compound, a membrane, a sponge, a foam, an adhesives, and a propellant binder. The composition includes one or more polyols, one or more isocyanate-group containing compounds having an isocyanate group functionality of at least two, and optionally one or more chain extenders. At least one of the polyols is a farnesene-based polyol having a number average molecular weight less than or equal to 100,000 g/mol and a viscosity at 25° C. less than 10,000 cP. The farnesene-based polyol may be a homopolymer or a copolymer of farnesene. The composition may also comprise additional polyols, such as a polyol of a homopolymer or copolymer of a polydiene. Methods of preparing a polyurethane are also provided.

First claim

What is claimed:

1. A composition for making a polyurethane comprising one or more polyols and one or more isocyanate-group containing compounds,
at least one of the one or more polyols is a farnesene-based polyol which is a polyol of a farnesene homopolymer or a polyol of a copolymer of farnesene and a comonomer selected from the group consisting of dienes, vinyl aromatics, and combinations thereof, the farnesene-based polyol being a polymer having a backbone derived from monomers comprising farnesene and at least one terminal end comprising a hydroxyl group,
the one or more isocyanate-group containing compounds have an isocyanate group functionality of at least two, and
wherein the composition produces a polyurethane having a backbone derived from monomers comprising farnesene.

2. The composition of claim 1 , wherein at least one of the one or more polyols is a farnesene-based polyol which is a polyol of a copolymer of farnesene and a diene selected from the group consisting of butadiene, isoprene, and combinations thereof.

3. The composition of claim 1 , wherein at least one of the one or more polyols is a farnesene-based polyol which is a polyol of a copolymer of farnesene and a vinyl aromatic selected from the group consisting of styrene and alpha methyl styrene.

4. The composition of claim 1 further comprising a chain extender.

5. The composition of claim 3 , wherein the chain extender is selected from the group consisting of monomeric polyols and polyamines.

6. The composition of claim 1 , wherein the one or more polyols further comprises a polyol of a homopolymer or copolymer of a polydiene.

7. The composition of claim 1 comprising an NCO/OH ratio of about 2:1 to 1:2.

8. The composition of claim 1 , wherein the farnesene-based polyol has a number average molecular weight less than or equal to 100,000 g/mol.

9. The composition of claim 1 , wherein the farnesene-based polyol has a number average molecular weight less than or equal to 25,000 g/mol.

10. The composition of claim 1 , wherein the farnesene-based polyol has a viscosity at 25° C. less than 10,000 cP.

11. The composition of claim 1 , wherein the farnesene-based polyol has been hydrogenated to have a degree of unsaturation that is less than or equal to 50% of the degree of unsaturation of the farnesene-based polyol prior to hydrogenation.

12. The composition of claim 1 , wherein the farnesene-based polyol has been hydrogenated to have a degree of unsaturation that is less than or equal to 10% of the degree of unsaturation of the farnesene-based polyol prior to hydrogenation.

Assignees

• Fina Technology

Inventors

• Tian Nan
• Chao Herbert

Classifications

• 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

• C08G2170/00

  Compositions for adhesives · CPC title

• C08G18/7671

  containing only one alkylene bisphenyl group · CPC title

• C09K3/1021

  Polyurethanes or derivatives thereof · CPC title

• C08G18/12

  using two or more compounds having active hydrogen in the first polymerisation step · CPC title