Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, preferably propylene, includes an aromatic amine in the catalyst composition formed from a palladium salt, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus. The presence of the aromatic amine reduces the proportion of 3-alkyl-2,5-furandiyl moieties present in the polymer chain.

Abstract: A catalyst composition useful in the preparation of a polymer composition includes a Group VIII metal and a phosphorus bidentate ligand of the general formula (R.sub.2)(R.sub.4)P--R.sub.3 --P(R.sub.2)(R.sub.4) wherein R.sub.2 and R.sub.4 are optionally polar substituted alkyl groups, differing from each other in carbon number, and wherein R.sub.3 is a divalent organic bridging group which contains four atoms. Such catalyst compositions are particularly useful for preparing copolymers of carbon monoxide with .alpha.-olefins having at least three carbon atoms.

Abstract: A process for the production of thermoset copolymers having tailored product properties such as high glass transition temperature and/or increased cross-linking, the process comprising contacting a comonomer mixture with a methathesis catalyst system obtainable by combining at least a catalyst component and an activator component, wherein the comonomer is selected from compounds according to the formulae: ##STR1##

Abstract: Polymers of carbon monoxide with one or more olefinically unsaturated compounds are prepared by contacting the monomers with a palladium phosphorus bidentate catalyst in which at least one of the phosphorus atoms of the bidentate forms part of a 9-phosphabicyclononyl structure.

Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, preferably propylene, includes an aromatic amine in the catalyst composition formed from a palladium salt, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus. The presence of the aromatic amine reduces the proportion of 3-alkyl-2,5-furandiyl moieties present in the polymer chain.

Abstract: A catalyst composition useful in the preparation of a polymer composition includes a Group VIII metal and a phosphorus bidentate ligand of the general formula (R.sub.2)(R.sub.4)P-R.sub.3 -P(R.sub.2)(R.sub.4) wherein R.sub.2 and R.sub.4 are optionally polar substituted alkyl groups, differing from each other in carbon number, and wherein R.sub.3 is a divalent organic bridging group which contains four atoms. Such catalyst compositions are particularly useful for preparing copolymers of carbon monoxide with .alpha.-olefins having at least three carbon atoms.

Abstract: A process for the production of thermoset copolymers having tailored product properties such as high glass transition temperature and/or increased cross-linking, the process comprising contacting a comonomer mixture with a methathesis catalyst system obtainable by combining at least a catalyst component and an activator component, wherein the comonomer is selected from compounds according to the formulae: ##STR1##

Abstract: A novel catalyst composition containing a Group VIII metal and a phosphorus bidentate ligand wherein each phosphorus atom forms part of a phosphacyclohexyl structure.

Abstract: A process for preparing a blend of a norbornene polymer and a vinyl polymer, the process comprising (a) injecting into a mold a reaction mixture comprising from about 30 to about 70 weight percent, based on the total monomer weight, of at least one substituted or unsubstituted norbornene monomer, from about 70 to about 30 weight percent of at least one polymerizable monomer, a metathesis catalyst system comprising a transition metal catalyst and a cocatalyst, and a free radical initiator, and (b) subjecting the reaction mixture to temperature conditions to sequentially initiate polymerization of the norbornene monomer and the vinyl monomer.

Abstract: A process for the production of thermoset polymers comprising contacting at least one monomer of the formulae: ##STR1## with a metathesis catalyst system which comprises a tungsten catalyst and a tin or silicon hydride cocatalyst.

Abstract: In the process of producing a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon in the presence of a palladium salt, the anion of a strong non-hydrohalogenic acid, and a phosphine ligand, improved polymerization rates are obtained when employing a novel catalyst composition formed from a novel 1,3-bis(phosphino)-2-silapropane, which can be produced with high yield, wherein the 2-silapropane moiety is additionally substituted at the silicon atom with two hydrocarbyl substituents.

Abstract: In the process of producing a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon in the presence of a palladium salt, the anion of a strong non-hydrohalogenic acid, and a phosphine ligand, improved polymerization rates are obtained when employing a novel catalyst composition formed from a novel 1,3-bis(phosphino)-2-silapropane, which can be produced with high yield, wherein the 2-silapropane moiety is additionally substituted at the silicon atom with two hydrocarbyl substituents.

Abstract: In the process of producing a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon in the presence of a palladium salt, the anion of a strong non-hydrohalogenic acid, and a phosphine ligand, improved polymerization rates are obtained when employing a novel catalyst composition formed from a novel 1,3-bis(phosphino)-2-silapropane, which can be produced with high yield, wherein the 2-silapropane moiety is additionally substituted at the silicon atom with two hydrocarbyl substituents.

Abstract: A process for the production of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises contacting the carbon monoxide and hydrocarbon in the presence of a catalyst composition formed from a palladium compound, an anion of a non-hydrohalogenic acid having a pKa below about 4 and a phosphino-arsinoalkane bidentate ligand.

Abstract: A process for the preparation of phenylene-bis-phosphineoxide compounds by reacting in a polar aprotic solvent a difluorobenzene compound with a compound of the general formula ##STR1## wherein Me is an alkali metal, R.sup.1 and R.sup.2 each independently represents an alkyl-, aryl-, alkaryl- or aralkyl group, or R.sup.1 and R.sup.2 together form an alkylene group.

Abstract: A process for the preparation of phenylene-bis-phosphineoxide compounds by reacting in a polar aprotic solvent a difluorobenzene compound with a compound of the general formula ##STR1## wherein Me is an alkali metal, R.sup.1 and R.sup.2 each independently represents an alkyl-, aryl-, alkaryl- or aralkyl group, or R.sup.1 and R.sup.2 together form an alkylene group.