公开(公告)号：US12196289B2

公开(公告)日：2025-01-14

申请号：US18257934

申请日：2021-11-25

Applicant: ContiTech Antriebssysteme GmbH

Inventor： Reinhard Teves ,  Heiko Sattler ,  Jan Michalk ,  Antonius Dikmans ,  Henning Kanzow ,  Stephanie Kautz

IPC: F16G1/28 ,  B29D29/08 ,  C08J7/04 ,  C08K3/04 ,  F16G1/10 ,  B29K9/00 ,  B29K23/00 ,  B29K277/00 ,  B29K309/08

Abstract: The present invention relates to elastomer toothed belts comprising a fabric spanning the teeth of the toothed belt, wherein the elastomer mixture forming the teeth contains a crosslinked ethylene-propylene rubber (EPM) and/or a crosslinked ethylene-propylene terpolymer rubber (EPDM) accounting for at least 70% by weight of the elastomer mixture based on the polymer proportion and wherein an interlayer is arranged between the fabric and the elastomer mixture forming the teeth which contains at least 70% by weight of hydrogenated acrylonitrile-butadiene rubber (HNBR) based on the polymer proportion of the interlayer. Such elastomer toothed belts are halogen-free and feature improved durability and good low-temperature stability properties. The present invention further relates to processes for producing such elastomer toothed belts and to the use of a layer of hydrogenated acrylonitrile-butadiene rubber (HNBR) in such toothed belts to increase service life, to improve low-temperature stability and to improve the adhesion between the teeth and the fabric.

公开(公告)号：US20240052910A1

公开(公告)日：2024-02-15

申请号：US18257934

申请日：2021-11-25

Applicant: ContiTech Antriebssysteme GmbH

Inventor： Reinhard Teves ,  Heiko Sattler ,  Jan Michalk ,  Antonius Dikmans ,  Henning Kanzow ,  Stephanie Kautz

IPC: F16G1/28 ,  F16G1/10 ,  C08K3/04 ,  C08J7/04

CPC classification number: F16G1/28 ,  F16G1/10 ,  C08K3/04 ,  C08J7/042 ,  C08J2377/00 ,  C08J2309/02 ,  B29D29/08

Abstract: The present invention relates to elastomer toothed belts comprising a fabric spanning the teeth of the toothed belt, wherein the elastomer mixture forming the teeth contains a crosslinked ethylene-propylene rubber (EPM) and/or a crosslinked ethylene-propylene terpolymer rubber (EPDM) accounting for at least 70% by weight of the elastomer mixture based on the polymer proportion and wherein an interlayer is arranged between the fabric and the elastomer mixture forming the teeth which contains at least 70% by weight of hydrogenated acrylonitrile-butadiene rubber (HNBR) based on the polymer proportion of the interlayer. Such elastomer toothed belts are halogen-free and feature improved durability and good low-temperature stability properties. The present invention further relates to processes for producing such elastomer toothed belts and to the use of a layer of hydrogenated acrylonitrile-butadiene rubber (HNBR) in such toothed belts to increase service life, to improve low-temperature stability and to improve the adhesion between the teeth and the fabric.