Composition comprising polypropylene and polyol, and method of making the same

Patent metadata

Field	Value
Publication number	US-10487202-B2
Application number	US-201816185732-A
Country	US
Kind code	B2
Filing date	Nov 9, 2018
Priority date	Aug 8, 2014
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A composition includes (a) a polypropylene or a polypropylene copolymer, (b) a polyol, and (c) optionally an organic peroxide. The polyol (b) is in the range of from about 0.01 wt. % to about 25 wt. % of the total weight of (a), (b) and (c). The method of making such a polymer composition, the method of using such a polymer composition, and a sheet or a fabricated article comprising such a polypropylene composition, are also provided.

First claim

What is claimed is:

1. A composition comprising:
(a) a polypropylene, a polypropylene copolymer or a polypropylene impact copolymer; and
(b) a polyol; and
(c) optionally an organic peroxide
wherein the polyol (b) is in the range of from about 0.01 wt. % to about 25 wt. % of the total weight of (a), (b), and (c), and wherein
the polyol is a polycarbonate polyol, a polycaprolactone polyol, or a polyester based polyol.

2. The composition of claim 1 , wherein the polyol (b) is in the range of from about 0.1 wt. % to about 10 wt. % of the total weight of (a), (b) and (c).

3. The composition of claim 1 , wherein the polyol (b) is in the range of from about 0.1 wt. % to about 5 wt. % of the total weight of (a), (b) and (c).

4. The composition of claim 1 , wherein no compatibilizer is present between (a) the polypropylene or the polypropylene copolymer; and (b) polyol.

5. The composition of claim 1 , wherein the polyol has a functionality between 1 and 10.

6. The composition of claim 1 , wherein the polyol is a polycarbonate polyol selected from the group consisting of a polycarbonate diol, a polycarbonate triol, and a combination thereof.

7. The composition of claim 1 , wherein the polyol is a poly(propylene carbonate) diol or polyethylene carbonate polyol.

8. The composition of claim 1 , wherein the polyol is a poly(propylene carbonate) diol.

9. The composition of claim 1 , wherein the polyol is a poly(propylene carbonate) diol having alternating copolymer structure.

10. The composition of claim 1 , wherein the polyol has a molecular weight in the range of from 500 g/mol to 50,000 g/mol.

11. The composition of claim 1 , wherein the composition has an IZOD impact resistance of equal to or higher than 3.5 ft-lb/inch.

12. A method of making the composition of claim 1 , comprising:
mixing (a) a polypropylene, a polypropylene copolymer or a polypropylene impact copolymer; (b) a polyol; and (c) optionally an organic peroxide, wherein the polyol (b) is in the range of from about 0.01 wt. % to about 25 wt. % of the total weight of (a), (b) and (c), and wherein
the polyol is a polycarbonate polyol, a polycaprolactone polyol, or a polyester based polyol.

13. The method of claim 12 , wherein
(a) the polypropylene or a polypropylene copolymer; and (b) the polyol are directly mixed without using any compatibilizer between (a) and (b).

14. The method of claim 12 , further comprising reacting (a) the polypropylene or a polypropylene copolymer; and (b) the polyol.

15. The method of claim 12 , wherein the polyol (b) is in the range of from about 0.1 wt. % to about 10 wt. % of the total weight of (a), (b) and (c).

16. The method of claim 12 , wherein the polyol (b) is in the range of from about 0.1 wt. % to about 5 wt. % of the total weight of (a), (b) and (c).

17. The method of claim 12 , wherein the polyol is a polycarbonate polyol selected from the group consisting of a polycarbonate diol, a polycarbonate triol, and a combination thereof.

18. The method of claim 12 , wherein the polyol is a poly(propylene carbonate) diol or polyethylene carbonate polyol.

19. A method of using the composition of claim 1 , comprising fabricating an article comprising the composition of claim 1 .

20. The method of claim 19 , wherein the composition is used as a material selected from the group consisting of a toughness enhancer, a tiger-striping performance enhancer, a gas barrier, a paint adhesion promoter, a compatibilizer between a filler and a polymer or between two polymers.

21. A fabricated article comprising the composition of claim 1 .

22. The article of claim 21 , wherein the polyol (b) is in the range of from about 0.1 wt. % to about 10 wt. % of the total weight of (a), (b) and (c).

23. The article of claim 21 , wherein the polyol (b) is in the range of from about 0.1 wt. % to about 5 wt. % of the total weight of (a), (b) and (c).

24. The article of claim 21 , wherein no compatibilizer is present between (a) the polypropylene or the polypropylene copolymer; and (b) polyol.

25. The article of claim 21 , wherein the polyol is a poly(propylene carbonate) diol.

26. The article of claim 21 , wherein the polyol is a poly(propylene carbonate) diol.

27. The article of claim 21 , wherein the polyol is a poly(propylene carbonate) diol having alternating copolymer structure.

Assignees

• Braskem America Inc

Inventors

• Krishnaswamy Rajendra

Classifications

• B29C48/405

  Intermeshing co-rotating screws · CPC title

• B29C48/40

  using two or more parallel screws {or at least two parallel non-intermeshing screws}, e.g. twin screw extruders · CPC title

• C08J3/203

  Solid polymers with solid and/or liquid additives · CPC title

• B29C48/92

  Measuring, controlling or regulating · CPC title

• C08J2469/00

  Characterised by the use of polycarbonates; Derivatives of polycarbonates · CPC title