EP 1042378 A1 20001011 - METHOD FOR PRODUCING ELASTOMERS
Title (en)
METHOD FOR PRODUCING ELASTOMERS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ELASTOMEREN
Title (fr)
PROCEDE DE PRODUCTION D'ELASTOMERES
Publication
Application
Priority
- DE 19757218 A 19971222
- EP 9808012 W 19981209
Abstract (en)
[origin: DE19757218A1] In the production of (un)saturated elastomers by (co)polymerization of 2-8 C alpha -olefins, open-chain, monocyclic and/or polycyclic 4-15 C dienes and/or styrene, using catalysts that can be activated by cocatalysts, the catalysts are metallocenes of subgroup III, IV, V or VI metals, including the lanthanides and actinides or pi -complex compounds. The process concerns the production of (un)saturated elastomers, which, in addition to the amorphous structure and a low glass transition temperature, Tg, have melt peak(s), including at least one peak maximum at a Tm above +40 deg C, as determined by differential scanning calorimetry (DSC). It involves (co)polymerization of monomers selected from 2-8 C alpha -olefins, open-chain, monocyclic and/or polycyclic 4-15 C dienes and styrene in bulk, solution, high temperature solution, slurry or gas phase in the presence of organometallic catalysts that can be activated by cocatalysts. The novelty is that the organometallic catalysts are metallocene compounds of formula (I) or pi -complex compounds and especially metallocene compounds of formula (II): CpI, CpII = carbanions with structure containing cyclopentadienyl; D = a donor atom; A = an acceptor atom; M = a sub-group III, IV, V or VI transition metal, including the lanthanides and actinides; X = an anion equivalent; n = 0-4, depending on the charge on M; pi I, pi II = charged or electrically neutral pi -systems
IPC 1-7
IPC 8 full level
C08F 4/625 (2006.01); C08F 4/6392 (2006.01); C08F 4/643 (2006.01); C08F 12/04 (2006.01); C08F 210/18 (2006.01); C08F 4/659 (2006.01)
CPC (source: EP KR)
C08F 4/63908 (2013.01 - KR); C08F 4/63912 (2013.01 - KR); C08F 4/63922 (2013.01 - KR); C08F 12/04 (2013.01 - EP); C08F 210/18 (2013.01 - EP KR); C08F 4/65908 (2013.01 - EP); C08F 4/65912 (2013.01 - EP); C08F 2420/06 (2013.01 - EP); C08F 2420/07 (2021.01 - EP)
Citation (search report)
See references of WO 9932532A1
Designated contracting state (EPC)
AT BE CH DE ES FI FR GB IT LI NL
DOCDB simple family (publication)
DE 19757218 A1 19990624; AU 1760299 A 19990712; CA 2315651 A1 19990701; CN 1282343 A 20010131; EP 1042378 A1 20001011; JP 2001527099 A 20011225; KR 20010033431 A 20010425; NO 20003214 D0 20000621; NO 20003214 L 20000621; WO 9932532 A1 19990701
DOCDB simple family (application)
DE 19757218 A 19971222; AU 1760299 A 19981209; CA 2315651 A 19981209; CN 98812477 A 19981209; EP 9808012 W 19981209; EP 98962433 A 19981209; JP 2000525467 A 19981209; KR 20007006911 A 20000621; NO 20003214 A 20000621