US 12,258,471 B2
Readily process-able, oil-resistant thermoplastic vulcanizates
Tonson Abraham, Avon, OH (US); Aditya Jindal, Cuyahoga Falls, OH (US); Michael P. Mallamaci, North Canton, OH (US); and Taylor L. Wilson, Valley View, OH (US)
Assigned to Parker-Hannifin Corporation, Cleveland, OH (US)
Filed by Parker-Hannifin Corporation, Cleveland, OH (US)
Filed on Jul. 13, 2021, as Appl. No. 17/374,395.
Claims priority of provisional application 63/128,354, filed on Dec. 21, 2020.
Prior Publication US 2022/0195184 A1, Jun. 23, 2022
Int. Cl. C08L 77/02 (2006.01); C08L 13/00 (2006.01); C08L 67/03 (2006.01)
CPC C08L 77/02 (2013.01) [C08L 13/00 (2013.01); C08L 67/03 (2013.01); C08L 2207/04 (2013.01); C08L 2312/00 (2013.01)] 20 Claims
 
1. A thermoplastic vulcanizate comprising a plastic phase and a rubber phase, wherein
a) the plastic phase comprises from about 35 parts to about 60 parts by weight, based on 100 parts by weight of the plastic and rubber phases, of a plastic having a melting point of about 160° C. to about 260° C., wherein the plastic is a semi-crystalline engineering polyester,
b) the rubber phase comprises from about 65 parts to about 40 parts, by weight based on 100 parts by weight of the plastic and rubber phases, of a carboxylated nitrile rubber having reactive carboxylate groups; and
c) crosslinks the vulcanizate comprises formed by a reaction between an addition type curing agent and the reactive carboxylate groups in the carboxylated nitrile rubber, wherein the addition type curing agent is a compound comprising more than one oxazoline group.