公开(公告)号：FR3005659B1

公开(公告)日：2021-05-14

申请号：FR1454480

申请日：2014-05-20

Applicant: CABOT CORP

Inventor： ADLER GERALD D ,  PRAKASH ANAND ,  DICKINSON RALPH E ,  TIRUMALA VIJAY R

IPC: C08J3/22 ,  C08K3/04 ,  C08L7/00 ,  C08L9/00 ,  C08L25/10

Abstract: M?langes composites d'?lastom?res comprenant des ?lastom?res non charg?s ou faiblement charg?s r?duisant l'hyst?r?se sans compromettre le renforcement. L'hyst?r?se peut ?galement ?tre r?duite en ajustant le proc?d? de mise en ?uvre.

公开(公告)号：NL2012845C2

公开(公告)日：2015-07-20

申请号：NL2012845

申请日：2014-05-20

Applicant: CABOT CORP

Inventor： ADLER GERALD D ,  PRAKASH ANAND ,  DICKINSON RALPH E ,  TIRUMALA VIJAY R

IPC: C08J3/22

Abstract: Blends of elastomer composites with unfilled or less highly filled elastomer reduces hysteresis without compromising reinforcement. Hysteresis may also be reduced by adjusting the compounding method.

公开(公告)号：CA2253548A1

公开(公告)日：1997-11-13

申请号：CA2253548

申请日：1997-05-02

Applicant: CABOT CORP

Inventor： WANG MENG-JIAO ,  DICKINSON RALPH E ,  BROWN TREVOR ALAN

IPC: C08J3/22 ,  C08K3/04 ,  C08K3/36 ,  C08K9/00 ,  C08K9/06 ,  C08L21/00 ,  C08L101/00 ,  C08J3/24

Abstract: Novel methods of making elastomer compositions include the use of certain modifying agents and mechanical working prior to incorporation of a vulcanization system in a first or other early stage of a multi-stage process particulate filler, such as carbon black, and sulfur cross-linking agent are substantially dispersed into sulfur cross-linkable-hydrocarbon elastomer. The particulate filler and sulfur cross-linking agent can be premixed together as a pre-blend prior to being added to the elastomer. A substantially unvulcanized, processable elastomer is produced by the multi-stage process, involving further mechanical working of the initial masterbatch. A curative additive comprising accelerator, and optionally additional sulfur crosslinking agent, can be added and dispersed in the elastomer to produce a vulcanizable composition. In accordance with another aspect, extender oil is added to the elastomer subsequent to addition and substantial dispersion of the filler and sulfur cross-linking agent into the elastomer in the aforesaid early stage of the multi-stage process. Significant improvement in performance characteristics is achieved, especially by preferred embodiments, including good abrasion resistance and low hysteresis measured, for example, as tan delta-max at 70 ~C. The present invention further relates to novel unvulcanized, processable elastomer compositions comprising certain treated carbon black particulate filler and certain pre-vulcanization modifier in an amount effective to substantially increase bound rubber content in a substantially unvulcanized processable elastomer product of a non-productive thermo-mechanical working of the elastomer composition.