Additive compositions and thermoplastic polymer compositions comprising the same

Patent metadata

Field	Value
Publication number	US-11834558-B2
Application number	US-201916721199-A
Country	US
Kind code	B2
Filing date	Dec 19, 2019
Priority date	Dec 21, 2018
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

A thermoplastic polymer composition comprises a thermoplastic polymer, at least one clarifying agent, and at least one coloring agent. A method for producing a thermoplastic polymer composition comprises the steps of separately providing a thermoplastic polymer and an additive composition and then mixing the thermoplastic polymer and additive composition. The additive composition comprises a clarifying agent and a coloring agent. Another method for producing a thermoplastic polymer composition comprises the steps of separately providing a thermoplastic polymer, at least one clarifying agent, and at least one coloring agent and then mixing the thermoplastic polymer, the clarifying agent, and the coloring agent. The thermoplastic polymer exhibits a blue hue factor (α) of 0.93 to 1.1 and/or a normalized brightness value (Y′) of 64.0 to 69.6. An additive composition contains at least one clarifying agent and at least one coloring agent.

First claim

What is claimed is:

1. A thermoplastic polymer composition comprising:
(a) a thermoplastic polymer;
(b) at least one clarifying agent, wherein the clarifying agent is a compound of Formula (I) below

where R 1 is an n-propyl group, R 2 , R 3 , R 5 , R 6 , R 7 , R 8 , R 10 , and R 11 are each hydrogen, R 12 is —CH(OH)CH 2 OH, and R 4 and R 9 are each n-propyl groups; and
(c) at least one coloring agent,
wherein the amount of clarifying agent in the thermoplastic polymer composition is from about 50 ppm to about 5,000 ppm based on the total weight of the thermoplastic polymer composition, and the thermoplastic polymer exhibits a blue hue factor (α) of 0.93 to 1.1 and a normalized brightness value (Y′) of 64.0 to 69.6.

2. The thermoplastic polymer composition of claim 1 , wherein the thermoplastic polymer is a polyolefin.

3. The thermoplastic polymer composition of claim 2 , wherein the thermoplastic polymer is selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, and mixtures thereof.

4. The thermoplastic polymer composition of claim 1 , wherein the clarifying agent is present in an amount of about 1,000 ppm to about 2,500 ppm.

5. The thermoplastic polymer composition of claim 1 , wherein the coloring agent is a pigment.

6. A method for producing a thermoplastic polymer composition, the method comprising the steps of:
(a) providing a thermoplastic polymer;
(b) providing an additive composition comprising:
(i) at least one clarifying agent, wherein the clarifying agent is a compound of Formula (I) below

where R 1 is an n-propyl group, R 2 , R 3 , R 5 , R 6 , R 7 , R 8 , R 10 , and R 11 are each hydrogen, R 12 is —CH(OH)CH 2 OH, and R 4 and R 9 are each n-propyl groups;
(ii) at least one coloring agent; and

(c) mixing the thermoplastic polymer and the additive composition to produce a thermoplastic polymer composition,
wherein the amount of clarifying agent in the thermoplastic polymer composition is from about 50 ppm to about 5,000 ppm based on the total weight of the thermoplastic polymer composition, and the thermoplastic polymer exhibits a blue hue factor (α) of 0.93 to 1.1 and a normalized brightness value (Y′) of 64.0 to 69.6.

7. The method of claim 6 , wherein the thermoplastic polymer is a polyolefin.

8. The method of claim 7 , wherein the thermoplastic polymer is selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, and mixtures thereof.

9. The method of claim 6 , wherein the clarifying agent is present in an amount of about 1,000 ppm to about 2,500 ppm.

10. The method of claim 6 , wherein the coloring agent is a pigment.

11. A method for producing a thermoplastic polymer composition, the method comprising the steps of:
(a) providing a thermoplastic polymer;
(b) providing at least one clarifying agent, wherein the clarifying agent is a compound of Formula (I) below

where R 1 is an n-propyl group, R 2 , R 3 , R 5 , R 6 , R 7 , R 8 , R 10 , and R 11 are each hydrogen, R 12 is —CH(OH)CH 2 OH, and R 4 and R 9 are each n-propyl groups;
(c) providing at least one coloring agent; and
(d) mixing the thermoplastic polymer, the clarifying agent, and the coloring agent to produce a thermoplastic polymer composition,
wherein the amount of clarifying agent present in the thermoplastic polymer composition is from about 100 ppm to about 5,000 ppm based on the total weight of the thermoplastic polymer composition, and the thermoplastic polymer exhibits a blue hue factor (α) of 0.93 to 1.1 and a normalized brightness value (Y′) of 64.0 to 69.6.

12. The method of claim 11 , wherein the thermoplastic polymer is a polyolefin.

13. The method of claim 12 , wherein the thermoplastic polymer is selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, and mixtures thereof.

14. The method of claim 11 , wherein the clarifying agent is present in an amount of about 1,000 ppm to about 2,500 ppm.

15. The method of claim 11 , wherein the coloring agent is a pigment.

16. The thermoplastic polymer composition of claim 5 , wherein the polymer composition comprises carbon black.

17. The thermoplastic polymer composition of claim 16 , wherein the thermoplastic polymer composition comprises less than 2 ppm of carbon black.

18. The thermoplastic polymer composition of claim 5 , wherein the thermoplastic polymer composition comprises a blue pigment, a violet pigment, or a mixture thereof.

19. The thermoplastic polymer composition of claim 18 , wherein the blue or violet pigment is selected from the group consisting of Pigment Blue 29, Pigment Blue 63, Pigment Violet 15, and mixtures thereof.

20. The thermoplastic polymer composition of claim 18 , wherein the thermoplastic polymer composition comprises about 4 to about 50 ppm of pigment.

21. The thermoplastic polymer composition of claim 5 , wherein the thermoplastic polymer composition comprises 3.5 to 40 ppm of Pigment Blue 29, 0 to 5 ppm of Pigment Violet 15, and 0.25 to 2 ppm of carbon black.

22. The thermoplastic polymer composition of claim 21 , wherein the thermoplastic polymer composition comprises 3.5 to 25 ppm of Pigment Blue 29, 0 to 4 ppm of Pigment Violet 15, and 0.25 to 1.75 ppm of carbon black.

23. The thermoplastic polymer composition of claim 22 , wherein the total amount of Pigment Blue 29, Pigment Violet 15, and carbon black present in the composition is from 4.75 to 25 ppm.

24. The method of claim 10 , wherein the polymer composition comprises carbon black.

25. The method of claim 24 , wherein the thermoplastic polymer composition comprises less than 2 ppm of carbon black.

26. The method of claim 10 , wherein the thermoplastic polymer composition comprises a blue pigment, a violet pigment, or a mixture thereof.

27. The method of claim 26 , wherein the blue or violet pigment is selected from the group consisting of Pigment Blue 29, Pigment Blue 63, Pigment Violet 15, and mixtures thereof.

28. The method of claim 26 , wherein the thermoplastic polymer composition comprises about 4 to about 50 ppm of pigment.

29. The method of claim 10 , wherein the thermoplastic polymer composition comprises 3.5 to 40 ppm of Pigment Blue 29, 0 to 5 ppm of Pigment Violet 15, and 0.25 to 2 ppm of carbon black.

30. The method of claim 29 , wherein the thermoplastic polymer composition comprises 3.5 to 25 ppm of Pigment Blue 29, 0 to 4 ppm of Pigment Violet 15, and 0.25 to 1.75 ppm of carbon black.

31. The method of claim 15 , wherein the polymer composition comprises carbon black.

32. The method of claim 31 , wherein the thermoplastic polymer composition comprises less than 2 ppm of carbon black.

33. The method of claim 15 , wherein the thermoplastic polymer composition comprises a blue pigment, a violet pigment, or a mixture thereof.

34. The method of claim 33 , wherein the blue or violet pigment is selected from th

Assignees

• Milliken & Co

Inventors

• Yu Xinfei
• Kochanowicz Christopher
• Mehl Nathan
• Keller Keith
• Johnson Brent
• Bynum Clifford

Classifications

• C08J3/226 Primary

  using a polymer as a carrier · CPC title

• C08K3/04

  Carbon · CPC title

• C08K3/34 Primary

  Silicon-containing compounds · CPC title

• C08K5/1575 Primary

  Six-membered rings · CPC title

• C08J2323/12

  Polypropene · CPC title