Process for the production of hydrogenated ring-opened metathesis polymers

US5932664A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Yun Chen · Krefeld, DE
• Ralf Dujardin · Willich, DE
• Harald Pielartzik · Pittsburgh, US
• Uli Franz · Solingen, DE

Key dates

• Filing date: Dec 16, 1997
• Grant date: Aug 3, 1999
• Expiry date: Dec 16, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G61/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Process for the production of hydrogenated, ring-opened metathesis (co)polymers from cyclic olefins using the ruthenium-carbene complexes of the general formula (I) ##STR1## in which R.sub.1 and R.sub.2 mutually independently mean hydrogen, C.sub.2 -C.sub.20 alkenyl, C.sub.1 -C.sub.20 alkyl, aryl, C.sub.1 -C.sub.20 carboxylate, C.sub.1 -C.sub.20 alkoxy, C.sub.2 -C.sub.20 alkenyloxy, aryloxy, C.sub.2 -C.sub.20 alkoxycarbon-yl,C.sub.1 -C.sub.20 alkylthio, which may optionally be substituted by C.sub.1 -C.sub.5 alkyl, halogen, C.sub.1 -C.sub.5 alkoxy or by phenyl optionally substituted by C.sub.1 -C.sub.5 alkyl, halogen, C.sub.1 -C.sub.5 alkoxy; PA1 X.sub.1 and X.sub.2 mutually independently mean any desired anionic ligand; PA1 L.sub.1 and L.sub.2 mutually independently mean any desired neutral electron donor PA2 and two or three of X.sub.1, X.sub.2, L.sub.1 and L.sub.2 may furthermore together form a multi-dentate chelating ligand, as catalysts for the polymerisation stage, wherein the catalyst is optionally modified after polymerisation by adding a modifier and the polymerisation product is hydrogenated as a solution (optionally diluted with the same inert solvent as during polymeri…