US 11,667,774 B2
Rubber vulcanization processes employing an eutectic mixture
Erin Sheepwash, Cuyahoga Falls, OH (US); Julia A. Dart, Sterling Heights, MI (US); and Michael C. Davis, Hockessin, DE (US)
Assigned to Bridgestone Corporation, Chuo-ku (JP)
Appl. No. 16/760,509
Filed by Bridgestone Corporation, Chuo-ku (JP)
PCT Filed Oct. 31, 2018, PCT No. PCT/US2018/058502
§ 371(c)(1), (2) Date Apr. 30, 2020,
PCT Pub. No. WO2019/089788, PCT Pub. Date May 9, 2019.
Claims priority of provisional application 62/579,641, filed on Oct. 31, 2017.
Prior Publication US 2021/0198459 A1, Jul. 1, 2021
Int. Cl. C08L 9/06 (2006.01); C08L 7/00 (2006.01)
CPC C08L 9/06 (2013.01) [C08L 7/00 (2013.01); C08L 2205/035 (2013.01)] 16 Claims
 
1. A method for preparing a vulcanizable composition of matter, the method comprising:
combining a vulcanizable rubber, a curative, zinc oxide, and a eutectic composition,
where the eutectic composition includes a combination of an ammonium cation and a hydrogen bond donor, where said vulcanizable composition includes less than 2 parts by weight zinc oxide per 100 parts by weight rubber.