Method for producing epoxidized natural rubber, rubber composition for tires, and pneumatic tire

摘要

The present invention provides a method for producing epoxidized natural rubber with high productivity and at low cost, a rubber composition for a tire containing the epoxidized natural rubber, and a pneumatic tire formed from the rubber composition for a tire. The present invention relates to a method for producing epoxidized natural rubber, the method including: step (1) of reacting an acid anhydride with hydrogen peroxide to prepare an organic peracid; and step (2) of epoxidizing natural rubber latex with the obtained organic peracid.

主权项

1. A method for producing epoxidized natural rubber, the method comprising:
step (1) of providing a mixture consisting of an acid anhydride, 0.1 to 2 moles of hydrogen peroxide per mole of the acid anhydride, and water and maintaining the mixture at a temperature of 5° C. to 40° C. for 5 minutes to 5 hours, to prepare an organic peracid; and step (2) of epoxidizing natural rubber latex with the obtained organic peracid.