Abstract: A curable, partially hydrogenated butadiene polymer having a hydrogenation degree from 0.5 to 55% and having a total amount of butadiene-derived vinyl groups according to the general formula (I) and trans groups of the general formula (II) of from 0% to 9% by weight based on the total weight of the polymer and wherein the partially hydrogenated polybutadiene polymer is a butadiene polymer comprising at least 50% by weight based on the total weight of the polymer which is 100%, of units derived from 1,3-butadiene. Also provided are a process to make the polymer, compositions containing the polymer and articles obtained by using the polymer.

Abstract: The present invention provides a composition comprising at least one halobutyl elastomer, at least one mineral filler and at least one protected thiol modifier. In another aspect the present invention provides a process which comprises mixing a halobutyl elastomer with at least one mineral filler, in the presence of at least one protected thiol modifier, and curing the resulting filled halobutyl elastomer.

Abstract: The present invention provides a composition comprising at least one halobutyl elastomer, at least one mineral filler and at least one protected thiol modifier. In another aspect the present invention provides a process which comprises mixing a halobutyl elastomer with at least one mineral filler, in the presence of at least one protected thiol modifier, and curing the resulting filled halobutyl elastomer.

Abstract: The present invention relates to polymers which are modified by functional end groups and are based on conjugated dienes or on conjugated dienes and vinylaromatic compounds, a process for their preparation and their use for the production of rubber shaped articles of all types, in particular for the production of tires and tire components, such as tire treads.

Abstract: The present invention relates to polymers that are modified along the polymer chain and are based on conjugated dienes or conjugated dienes and vinyl-aromatic compounds having a content of vinyl-aromatic compounds of up to 60 wt. %, a content of cis-position double bonds of ≧92%, a mean molecular weight of 50,000 to 1,500,000 g/mole and a gel content of ≦5%. The polymers according to the invention can be used for the production of all types of molded articles, wherein in particular their technical and physical properties are improved compared with the prior art.

Abstract: The invention relates to metallized, unsaturated polymer anions stabilized by coordinate bonding and having a high proportion of cis double bonds, to a process for the preparation thereof and also to the use of the new polymer anions for the preparation of graft polymers that can be obtained by reaction of the unsaturated polymer anions with anionically polymerisable, non-polar monomers. From the graft polymers that are prepared in this way the most diverse rubber mouldings can be produced by appropriate vulcanization processes.

Abstract: The present invention relates to polymers which are modified by functional end groups and are based on conjugated dienes or on conjugated dienes and vinylaromatic compounds, a process for their preparation and their use for the production of rubber shaped articles of all types, in particular for the production of tires and tire components, such as tire treads.

Abstract: The invention provides modifiers for the anionic polymerization of conjugated dienes or of conjugated dienes with vinylaromatic compounds, wherein the modifiers are specific aminoethers.

Abstract: The coupled polymers according to the present invention based on conjugated dienes or on conjugated dienes and vinylaromatic compounds and that are modified with electrophilic groups, prepared by reacting living anionic polymers based on the aforementioned monomers with functional organic compounds containing at least three groups capable of reacting with the living polymers and at least one group in the molecule serving for the modification of the polymers, have very good processing properties as well as improved physical and dynamic properties, together with the advantage that the coupling agents used do not exhibit any toxic effect during the processing.

Abstract: The present invention relates to polymers that are modified along the polymer chain and are based on conjugated dienes or conjugated dienes and vinyl-aromatic compounds having a content of vinyl-aromatic compounds of up to 60 wt. %, a content of cis-position double bonds of ≧92%, a mean molecular weight of 50,000 to 1,500,000 g/mole and a gel content of ≦5%. The polymers according to the invention can be used for the production of all types of molded articles, wherein in particular their technical and physical properties are improved compared with the prior art.

Abstract: The present invention relates to filled rubber mixes made from polyether/diolefin rubbers. The rubber mixes according to the present invention are suitable for the production of highly reinforced, abrasion-resistant moldings, in particular for the production of tires which exhibit low rolling resistance and elevated wet skid resistance.

Abstract: The present invention comprises a catalyst based on rare earth metal compounds which consists of a rare earth metal compound, an organic aluminum compound and a trihalosilane, of a process for the production thereof and of the use of the catalyst for polymerizing conjugated dienes to form high molecular weight polybutadienes.

Abstract: The present invention relates to filled rubber mixes made from polyether/diolefin rubbers. The rubber mixes according to the present invention are suitable for the production of highly reinforced, abrasion-resistant moldings, in particular for the production of tires which exhibit low rolling resistance and elevated wet skid resistance.

Abstract: The invention provides modifiers for the anionic polymerization of conjugated dienes or of conjugated dienes with vinylaromatic compounds, wherein the modifiers are specific aminoethers.