Flame-retardant polyhydroxyalkanoate phosphonate materials

Patent metadata

Field	Value
Publication number	US-9732193-B1
Application number	US-201615078779-A
Country	US
Kind code	B1
Filing date	Mar 23, 2016
Priority date	Mar 23, 2016
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

In an example, a flame-retardant polyhydroxyalkanoate (PHA) phosphonate material has a polymeric backbone that includes a phosphonate linkage between a first PHA material and a second PHA material.

First claim

The invention claimed is:

1. A process comprising:
forming a polyhydroxyalkanoate (PHA) material having a terminal carboxylic acid group from a biorenewable aliphatic fatty acid via a bacterial fermentation process;
chemically reacting the PHA material with a diol to convert the terminal carboxylic acid group to a terminal hydroxyl group; and
chemically reacting the terminal hydroxyl group with a phosphorus-based material to form a flame-retardant PHA phosphonate material.

2. The process of claim 1 , wherein the biorenewable aliphatic fatty acid is formed from a biorenewable plant oil.

3. The process of claim 2 , wherein the biorenewable plant oil includes castor oil, linseed oil, soybean oil, or a combination thereof.

4. The process of claim 1 , wherein the diol includes a biorenewable diol.

5. The process of claim 4 , wherein the biorenewable diol includes ethylene glycol, propylene glycol, butylene glycol, pentylene glycol, or a combination thereof.

6. The process of claim 1 , wherein the phosphorus-based material includes a phosphine oxide.

7. The process of claim 6 , wherein the phosphorus-based material includes dichlorophenylphosphine oxide.

8. The process of claim 1 , wherein the terminal hydroxyl group is chemically reacted with the phosphorus-based material in the presence of a catalyst.

9. The process of claim 8 , wherein the catalyst includes dimethylaminopyridine (DMAP).

10. The process of claim 1 , further comprising forming a polymeric blend that includes the flame-retardant PHA phosphonate material and a second polymeric material.

11. The process of claim 10 , wherein the second polymeric material includes a polylactic acid (PLA) material, a polyurethane material, a polycarbonate material, an acrylonitrile butadiene styrene (ABS) material, a polyester material, a polyether material, or a combination thereof.

12. A flame-retardant polyhydroxyalkanoate (PHA) phosphonate material formed by a process comprising:
forming a polyhydroxyalkanoate (PHA) material having a terminal carboxylic acid group from a biorenewable aliphatic fatty acid via a bacterial fermentation process;
chemically reacting the PHA material with a diol to convert the terminal carboxylic acid group to a terminal hydroxyl group; and
chemically reacting the terminal hydroxyl group with a phosphorus-based material to form a flame-retardant PHA phosphonate material, wherein the phosphorus based material includes a phosphine oxide.

13. The flame retardant PHA phosphonate material of claim 12 , wherein the phosphorus-based material includes dichlorophenylphosphine oxide.

14. The flame-retardant PHA phosphonate material of claim 12 , wherein the diol includes ethylene glycol, propylene glycol, or a combination thereof.

Assignees

• IBM

Inventors

• King Scott B
• Kobilka Brandon M
• Kuczynski Joseph
• Wertz Jason T

Classifications

• C08L75/04

  Polyurethanes · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title

• C08G63/6922

  derived from hydroxy carboxylic acids · CPC title

• C08L71/00

  Compositions of polyethers obtained by reactions forming an ether link in the main chain (of polyacetals C08L59/00; of epoxy resins C08L63/00; of polythioether-ethers C08L81/02; of polyether-sulfones C08L81/06); Compositions of derivatives of such polymers · CPC title

• C08L67/04

  Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C08L67/06 takes precedence) · CPC title