EP 4077340 A1 20221026 - METHOD FOR PRODUCING POLYSULPHANE-SILANES BY MEANS OF PHASE TRANSFER CATALYSIS
Title (en)
METHOD FOR PRODUCING POLYSULPHANE-SILANES BY MEANS OF PHASE TRANSFER CATALYSIS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYSULFANSILANEN MITTELS PHASENTRANSFERKATALYSE
Title (fr)
PROCÉDÉ DE PRODUCTION DE POLYSULFANE-SILANES PAR CATALYSE PAR TRANSFERT DE PHASE
Publication
Application
Priority
- EP 19217272 A 20191218
- EP 2020086042 W 20201214
Abstract (en)
[origin: WO2021122484A1] The invention relates to a method for producing polysulphane-silanes of formula (I): (R1)3-mR2 mSi-R3-Sx-R3-SiR2 m(OR1)3-m by reacting at least one silane of formula (II): (R1)3-mR2 mSi-R3-Hal with M(SH)y and/or MzS and sulphur, in the presence of a phase transfer catalyst of formula (III), wherein at least one carrier-vapour distillation and/or ozone treatment is performed during or after the reaction.
IPC 8 full level
CPC (source: CN EP US)
B01D 3/346 (2013.01 - EP); C07F 7/1804 (2013.01 - CN); C07F 7/1872 (2013.01 - US); C07F 7/1892 (2013.01 - CN); C07F 7/20 (2013.01 - CN EP)
Citation (search report)
See references of WO 2021122484A1
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)
EP 3838905 A1 20210623; CN 113366003 A 20210907; EP 4077340 A1 20221026; JP 2023507998 A 20230228; US 2023039979 A1 20230209; WO 2021122484 A1 20210624
DOCDB simple family (application)
EP 19217272 A 20191218; CN 202080010900 A 20201214; EP 2020086042 W 20201214; EP 20823822 A 20201214; JP 2022537522 A 20201214; US 202017787278 A 20201214