Claims
- 1. A method of converting into a thermoplastic elastomer an unsaturated vulcanizable rubber comprising providing an intimately mixed blend of (A) 100 parts by weight of said unsaturated vulcanizable rubber with (B) from 125 to 250 parts by weight of bituminous material by masticating the said unsaturated vulcanizable rubber and bituminous material together at elevated temperature, and further masticating said intimately mixed blend under dynamic shearing conditions in an internal mixer in the presence of (C) a curative for said unsaturated vulcanizable rubber in amount sufficient to cure the rubber, the said dynamic shearing of the intimately mixed blend in the presence of the curative being continued for a time and at a temperature sufficient to dynamically cure the rubber, whereby the bend is converted into a thermoplastic elastomer which is characterized by the ability to be thermoformed thereafter without cure into useful shaped articles having elastomeric properties, and by the ability to be re-processed, the said rubber (A) being ethylene-propylene-non-conjugated diene terpolymer.
Priority Claims (1)
Number |
Date |
Country |
Kind |
185784 |
Nov 1973 |
CAX |
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Parent Case Info
This is a continuation of application Ser. No. 417,701 filed Nov. 20, 1973, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
875947 |
Aug 1961 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
417701 |
Nov 1973 |
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