06005052 is referenced by 4 patents and cites 3 patents.

This invention describes a staged process in which successive dynamic vulcanizations of plural curable rubber blend components are based on condensation reactions of a functional group (reactive site) carried by each curable rubber. The process is carried out in three stages during each of which gases evolved during the condensation reactions are removed. It is essential to form an intermediate fully dense hard blend in the second stage. This intermediate hard blend contains a relatively large amount of plastic (relative to curable rubbers) and is therefore much harder than the desired final blend. In the third stage, additional rubber and curative for uncured rubber are added to achieve the desired softness. This process, carried out in an extruder, results in fully dense pellets which are injection moulded to produce articles having essentially the same specific gravity as that of the pellets.

Title
Staged condensation, dynamic vulcanization process for making a substantially unplasticized plastic/rubber blend
Application Number
686798
Publication Number
6005052
Application Date
May 22, 1998
Publication Date
December 21, 1999
Inventor
Craig Allen Chmielewski
Medina
OH, US
Krishna Venkataswamy
Akron
OH, US
Agent
William A Skinner
Alfred D Lobo
Assignee
Advanced Elastomer Systems
OH, US
IPC
C08L 33/08
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