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US 12,258,471 B2Granted
Readily process-able, oil-resistant thermoplastic vulcanizates
AssigneeParker-Hannifin Corporation
InventorsTonson Abraham, Aditya Jindal, Michael P. Mallamaci, Taylor L. Wilson
Life of this patent
Estimating the term…
Abstract
Disclosed are thermoplastic vulcanizates comprising a plastic phase and a rubber phase and process for preparing such thermoplastic vulcanizates, wherein the plastic phase comprises a thermoplastic polymer and the rubber phase comprises a carboxylated nitrile rubber.
Claims20
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.
1 more element
A thermoplastic vulcanizate comprising a plastic phase and a rubber phase, wherein
- a) the plastic phase comprises from about 70 parts to about 80 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, and
- b) the rubber phase comprises from about 30 parts to about 20 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) the vulcanizate comprises crosslinks 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.
1 more element
Dependencies are inferred from the claim text.