Triglyceride containing solution polymerization prepared styrene/butadiene elastomer and tire with component

Patent metadata

Field	Value
Publication number	US-10435545-B2
Application number	US-201615353293-A
Country	US
Kind code	B2
Filing date	Nov 16, 2016
Priority date	Apr 26, 2012
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

This invention relates to vegetable oil extended rubber containing soy oil and tire with a component of such oil extended rubber.

First claim

What is claimed is:

1. A method for preparing an oil extended styrene-butadiene rubber comprising: (1) blending front 22 phr to about 60 phr of soybean oil into a styrene-butadiene rubber cement and (2) recovering the oil extended styrene-butadiene rubber from the styrene-butadiene rubber cement.

2. The method of claim 1 wherein the styrene-butadiene rubber cement is made by the copolymerization of styrene and 1,3-butadiene in an organic solvent.

3. The method of claim 2 wherein the organic solvent is relatively inert to the copolymerization.

4. The method of claim 2 wherein the copolymerization of the styrene and 1,3-butadiene is terminated prior to blending the soybean oil into the styrene-butadiene rubber cement.

5. The method of claim 2 wherein oil extended styrene-butadiene rubber is recovered from the styrene-butadiene rubber cement by removal of the organic solvent.

6. The method of claim 5 wherein the oil extended styrene-butadiene rubber is recovered from the styrene-butadiene rubber cement by steam stripping.

7. The method of claim 1 wherein from 24 phr to about 60 phr of the soybean oil is blended into the styrene-butadiene rubber cement.

8. The method of claim 1 wherein from 25 phr to about 40 phr of the soybean oil is blended into the styrene-butadiene rubber cement.

9. The method of claim 1 wherein the oil extended styrene-butadiene rubber is void of petroleum oils.

10. The method of claim 1 wherein the styrene-butadiene rubber in the cement blended with the soybean oil in step (1) has a Mooney ML 1+4 viscosity at 100° C. before being oil extended of greater than 140.

11. A triglyceride oil extended solution styrene-butadiene rubber comprising: a solution styrene-butadiene rubber and from 22 phr to about 60 phr of soybean oil, wherein the oil extended solution styrene-butadiene rubber is void of fillers.

12. The triglyceride oil extended solution styrene-butadiene rubber of claim 11 wherein the solution styrene-butadiene rubber is void of plasticizers.

13. The triglyceride oil extended solution styrene-butadiene rubber of claim 11 wherein the soybean oil is present at a level which is within the range of 24 phr to about 40 phr.

14. The triglyceride oil extended solution styrene-butadiene rubber of claim 11 wherein the triglyceride oil extended solution styrene-butadiene rubber has a Mooney ML 1+4 viscosity at 100° C. before being oil extended of greater than 120.

15. The triglyceride oil extended solution styrene-butadiene rubber of claim 11 wherein the triglyceride oil extended solution styrene-butadiene rubber has a Mooney ML 1+4 viscosity at 100° C. before being oil extended of greater than 140.

16. The triglyceride oil extended solution styrene-butadiene rubber of claim 11 wherein the triglyceride oil extended solution styrene-butadiene rubber has a Mooney ML 1+4 viscosity at 100° C. before being oil extended of greater than 100; and wherein the triglyceride oil extended solution styrene-butadiene rubber has a vinyl microstructure content of about 63.5 percent.

17. A rubber composition which is comprised of the triglyceride oil extended solution styrene-butadiene rubber of claim 11 , about 0 phr to about 30 phr of at least one additional elastomer, and from about 40 phr to about 110 phr of at least one reinforcing filler.

18. A tire having a component which is comprised of the rubber composition of claim 17 .

19. A tire having a component which is comprised of the triglyceride oil extended styrene-butadiene rubber of claim 11 .

Assignees

• Goodyear Tire & Rubber

Inventors

• Kerns Michael Lester
• Rodewald Stephan
• Sandstrom Paul Harry

Classifications

• C08L9/06 Primary

  Copolymers with styrene · CPC title

• C08F2/06

  Organic solvent · CPC title

• C08L2205/06

  having improved processability or containing aids for moulding methods · CPC title

• C08F236/10

  with vinyl-aromatic monomers · CPC title

• B60C1/00 Primary

  Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition · CPC title