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AssigneeThe B.F. Goodrich Company
InventorsBrian L. Goodall, George M. Benedikt, Lester H. McIntosh, III, Dennis A. Barnes
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A single component ionic catalyst consists essentially of an organonickel complex cation, and a weakly coordinating neutral counteranion. The cation is a neutral bidentate ligand removably attached to a Group VIII transition metal in an organometal complex. The ligand is easily displaced by a norbornene-type (NB-type) monomer in an insertion reaction which results in an unexpectedly facile addition polymerization. A NB-type monomer includes NB or substituted NB, or a multi-ringed cycloolefin having more than three rings in which one or more of the rings has a structure derived from NB, and a ring may have an alicyclic alkyl, alkylene or alkylidene substituent. The insertion reaction results in the formation of a unique propagating species more soluble in a polar than in a non-polar solvent and devoid of an available .beta.-hydrogen for termination. The ensuing propagation of a polymer chain proceeds without measurable unsaturation. The chain continues to grow until the insertion of a monoolefinic chain transfer reagent results in substantially all chains being terminated with the residue of the chain transfer reagent. This unique chain transfer reaction allows one to control the molecular weight in a relatively narrow range. The reaction mixture for controlling the mol wt of the polymer chains may contain any other catalyst which generates a propagating species by an insertion reaction in an essentially anhydrous solvent. Both, mol wt and glass transition temperature Tg are tailored to provide a weight average mol wt Mw>20,000 but preferably not greater than about 500,000, and a T.sub.g in the range from about 150.degree. C. to about 400.degree. C. or higher, if desired.
In an essentially anhydrous reaction mixture in which a processable addition polymer is formed by coordination polymerization, said reaction mixture including at least one multi-ringed monoolefinically unsaturated cycloolefin monomer selected from the group consisting of bicyclo[2.2.1.]hept-2-ene ("norbornene" "NB") and substituted embodiments thereof, wherein said substituents, if present, are selected from the group consisting of (C.sub.1 -C.sub.20)alkyl, (C.sub.1 -C.sub.20)haloalkyl, (C.sub.5 -C.sub.12)cycloalkyl, (C.sub.1 -C.sub.6)alkylidenyl, aryl, haloaryl, (C.sub.7 -C.sub.15)aralkyl, (C.sub.7 -C.sub.15)haloaralkyl, (C.sub.3 -C.sub.20)alkenylyl, and (C.sub.4 -C.sub.20)alkylene with the proviso that the double bond is not a terminal double bond, a solvent for said monomer, and, a single component ionic catalyst of a Group VB, VIB, VIIB or VIII metal in an amount effective to convert said at least one monomer into said addition polymer, the improvement consisting essentially of,
An essentially anhydrous reaction mixture in which a processable addition polymer is formed, said reaction mixture comprising,
In an essentially anhydrous reaction mixture in which a processable addition polymer is formed by coordination polymerization, said reaction mixture including at least one multi-ringed monoolefinically unsaturated cycloolefin monomer selected from the group consisting of bicyclo[2.2.1.]hept-2-ene ("norbornene" "NB") and substituted embodiments thereof, wherein said substituents, if present, are selected from the group consisting of (C.sub.1 -C.sub.20)alkyl, (C.sub.1 -C.sub.20)haloalkyl, (C.sub.5 -C.sub.12)cycloalkyl, (C.sub.1 -C.sub.6 C)alkylidenyl, aryl, haloaryl, (C.sub.7 -C.sub.15)aralkyl, (C.sub.7 -C.sub.15)haloaralkyl, (C.sub.3 -C.sub.20)alkenylyl, and (C.sub.4 -C.sub.20)alkylene with the proviso that the double bond is not a terminal double bond, a solvent for said monomer, a single component ionic catalyst of a Group VB, VIB, VIIB, or VIII transition metal, and an alkylaluminoxane in an amount effective to convert said at least 50% by weight of one monomer into said addition polymer, the improvement consisting essentially of,
In an essentially anhydrous reaction mixture in which a processable addition polymer is formed by coordination polymerization, said reaction mixture including at least one multi-ringed monoolefinically unsaturated cycloolefin monomer selected from the group consisting of bicyclo[2.2.1.]hept-2-ene ("norbornene" "NB") and substituted embodiments thereof, a solvent for said monomer, and, a single component ionic catalyst of a Group VB, VIB, VIIB or VIII metal in combination with an alkylaluminoxane cocatalyst in an amount effective to convert said at least one monomer into said addition polymer, wherein said metal is selected from the group consisting of chromium, molybdenum, tungsten, manganese, nickel, palladium and platinum, the improvement consisting essentially of,
A melt-processable addition polymer having a number average molecular weight in the range from 20,000 to 500,000, of at least one multi-ringed monolefinically unsaturated cycloolefin monomer having a repeating unit derived from
A process for making an addition homo- or copolymer of a multi-ringed monoolefinically unsaturated cycloolefin monomer selected from the group consisting of bicyclo[2.2.1.]hept-2-ene ("norbornene"), dicyclopentadiene, 5,8-dimethano-1,2,3,4,4a,5,8,8a-dimethanooctahydronaphthalene, (tetracyclododecene "TD", or, DMON) and substituted embodiments thereof wherein said substituents, if present, are selected from the group consisting of (C.sub.1 -C.sub.20)alkyl, (C.sub.1 -C.sub.20)haloalkyl, (C.sub.5 -C.sub.12)cycloalkyl, (C.sub.1 -C.sub.6)alkylidenyl, aryl, haloaryl, (C.sub.7 -C.sub.15)aralkyl, (C.sub.7 -C.sub.15)haloaralkyl, (C.sub.3 -C.sub.20)alkenylyl, and (C.sub.4 -C.sub.20)alkylene with the proviso that the double bond is not a terminal double bond, said process comprising,
Dependencies are inferred from the claim text.