EP 4076981 A2 20221026 - METHOD FOR PRODUCING A RUBBER COMPOSITION COMPRISING A RUBBER CRUMB
Title (en)
METHOD FOR PRODUCING A RUBBER COMPOSITION COMPRISING A RUBBER CRUMB
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER KAUTSCHUKZUSAMMENSETZUNG MIT EINEM KAUTSCHUKKRÜMEL
Title (fr)
PROCEDE DE PREPARATION D'UNE COMPOSITION DE CAOUTCHOUC COMPRENANT UNE POUDRETTE DE CAOUTCHOUC
Publication
Application
Priority
- FR 1914745 A 20191218
- FR 2020052372 W 20201210
Abstract (en)
[origin: WO2021123574A2] The invention concerns a method which responds to this problem scenario. The invention therefore relates to a method for producing a rubber composition based on at least one diene elastomer, a reinforcing filler, a rubber crumb and a crosslinking system, said method comprising at least the following steps: incorporating the reinforcing filler into the diene elastomer in one or more portions and mixing; when the temperature of the mixture reaches a temperature of more than 100°C, adding the rubber crumb; continuing mixing to a maximum temperature of between 120°C and 190°C; cooling the mixture to a temperature of less than 100°C; incorporating the crosslinking system, and mixing to a maximum temperature of less than 110°C.
IPC 8 full level
CPC (source: EP US)
B60C 1/00 (2013.01 - EP); B60C 1/0016 (2013.01 - EP); C08L 7/00 (2013.01 - EP US); C08L 2205/035 (2013.01 - US); Y02W 30/62 (2015.05 - EP)
C-Set (source: EP)
C08L 7/00 + C08L 17/00 + C08L 9/00 + C08L 9/06 + C08K 3/04 + C08K 5/18 + C08K 5/09 + C08K 3/22 + C08K 5/47 + C08K 3/06
Citation (search report)
See references of WO 2021123574A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
FR 3105239 A1 20210625; FR 3105239 B1 20211203; CN 115298041 A 20221104; CN 115298041 B 20231024; EP 4076981 A2 20221026; US 2023028202 A1 20230126; WO 2021123574 A2 20210624
DOCDB simple family (application)
FR 1914745 A 20191218; CN 202080087325 A 20201210; EP 20842282 A 20201210; FR 2020052372 W 20201210; US 202017785963 A 20201210