Epoxidized Natural Rubber Composition

• US 20200131344A1
• Filed: 07/09/2018
• Published: 04/30/2020
• Est. Priority Date: 07/07/2017
• Status: Abandoned Application

• Current Assignee: Birla Carbon U.S.A., Inc. (Aditya Birla Management Corp Pvt Ltd.)
• Original Assignee: Birla Carbon U.S.A., Inc. (Aditya Birla Management Corp Pvt Ltd.)
• Inventors: HERD, Charles R, CURTIS, John C, COMBS, Zachary A., CHAPMAN, Andrew V, COOK, Stuart, BROWN, Paul S, SPILLER, Graham T, PATEL, Jaymini
• Application Number:
  US16/629,053
• Publication Number:
  US 20200131344A1
• Time in Patent Office: Days
• CPC Class Codes: B60C 1/00 Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• CPC Class Codes: B60C 1/0016 Compositions of the tread
• CPC Class Codes: B60C 11/0008 characterised by the tread rubber
• CPC Class Codes: B60C 2011/0025 Modulus or tan delta
• CPC Class Codes: C08J 2307/00 Characterised by the use of natural rubber
• CPC Class Codes: C08J 2407/00 Characterised by the use of natural rubber
• CPC Class Codes: C08J 3/226 using a polymer as a carrier
• CPC Class Codes: C08K 2201/014 Additives containing two or more different additives of the same subgroup in C08K
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08K 3/36 Silica
• CPC Class Codes: C08K 9/02 Ingredients treated with inorganic substances
• CPC Class Codes: C08K 9/04 Ingredients treated with organic substances treated with macromolecular compounds C08K9/08
• CPC Class Codes: C08L 15/00 Compositions of rubber derivatives C08L11/00, C08L13/00 take precedence
• CPC Class Codes: C08L 2201/08 Stabilised against heat, light or radiation or oxydation
• CPC Class Codes: C08L 2205/025 containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
• CPC Class Codes: C08L 7/00 Compositions of natural rubber

Abstract

Epoxidized natural rubber compositions, elastomer blends containing an epoxidized natural rubber, and materials containing carbon black and epoxidized natural rubber.

Claims

1. An elastomer composition comprising a functionalized carbon black and an at least partially epoxidized elastomer.

2. The elastomer composition of claim 1, wherein the at least partially epoxidized elastomer comprises an epoxidized natural rubber.

3. The elastomer composition of claim 1, wherein the functionalized carbon black comprises an oxidized carbon black, an amine treated carbon black, or a combination thereof.

5. The elastomer composition of claim 1, wherein the functionalized carbon black comprises a carbon black having one or more of:

a void volume of about 55.6, an electron microscopy surface area of about 123 m²/g,

6. The elastomer composition of claim 1, wherein the functionalized carbon black comprises a CD2125XZ grade carbon black.

8. The elastomer composition of claim 1, having a dispersion index of at least about 80.

11. The elastomer composition of claim 1, having at least one of a 100% Modulus of at least about 5 MPa, a 300% Modulus of at least about 15 MPa, or a heat buildup of less than about 50°

C.

14. The elastomer composition of claim 1, wherein the elastomer composition comprises a blend of natural rubber and epoxidized natural rubber.

15. The elastomer composition of claim 14, wherein the ratio of natural rubber to epoxidized natural rubber is from about 20:

80 to about 80;

20.

19. The elastomer composition of claim 1, further comprising an unmodified carbon black.

20. The elastomer composition of claim 19, wherein the unmodified carbon black is substantially similar, except in surface functionality, to the functionalized carbon black.

21. The elastomer composition of claim 19, wherein the unmodified carbon black comprises a tread grade carbon black and wherein the functionalized carbon black comprises a functionalized tread grade carbon black.

22. The elastomer composition of claim 19, wherein the unmodified carbon black comprises an N234 grade carbon black and the functionalized carbon black comprises CD2125XZ grade carbon black.

23. The elastomer composition of claim 1, comprising natural rubber, an epoxidized natural rubber, an unmodified carbon black, and a functionalized carbon black.

24. The elastomer composition of claim 23, wherein the ration ratio of natural rubber to epoxidized natural rubber is substantially similar to the ratio of unmodified carbon black to functionalized carbon black.

25. The elastomer of claim 23, wherein carbon black, including both the unmodified carbon black and the functionalized black is substantially uniformly distributed in the elastomer blend.

4. (canceled)

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26. A method for preparing an elastomer composition, the method comprising contacting a functionalized carbon black and an at least partially epoxidized elastomer.

27. The method of claim 26, wherein the at least partially epoxidized elastomer comprises an at least partially epoxidized natural rubber.

29. The method of claim 26, wherein the functionalized carbon black comprises an oxidized carbon black, an amine treated carbon black, or a combination thereof.

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33. A method comprising contacting a surface modified carbon black, and an unmodified carbon black, with epoxidized natural rubber.

34. (canceled)