Abstract:
This invention relates to an ethylene copolymer for lubricating oil, comprising: ethylene; at least one alpha-olefin having 3 or more carbon atoms; and at least one vicinally substituted olefin having 2 to 40 carbon atoms, wherein: the copolymer has a weight-average molecular weight (Mw) of about 50,000 to about 500,000; and an intensity ratio of Sαβ to Sαα insertions, as determined by a 13C-NMR spectrum of less than 0.5.
Abstract:
This invention relates to supported activators comprising the product of the combination of an ion-exchange layered silicate, an organoaluminum compound, and a heterocyclic compound, which may be substituted or unsubstituted. This invention further relates to catalyst systems comprising catalyst compounds and such activators, as well as processes to polymerize unsaturated monomers using the supported activators.For the purposes of this patent specification and the claims thereto, the term “activator” is used interchangeably with the term “co-catalyst”, the term “catalyst” refers to a metal compound that when combined with an activator polymerizes olefins, and the term “catalyst system” refers to the combination of a catalyst and an activator with or without a support. The terms “support” or “carrier”, for purposes of this patent specification, are used interchangeably and are any ion-exchange layered silicates.
Abstract:
This invention relates to late transition metal catalyst precursors and catalysts for olefin dimerizations and oligomerizations, and to methods for making and using these catalysts.
Abstract:
Substantially random ethylene and/or α-olefin copolymers containing units derived from vicinally disubstituted olefin monomers are described. The vicinally disubstituted olefin monomers may be represented by the generic formula (R1)CH═CH(R2), where R1 and R2 independently comprise hydrocarbyl or silyl-hydrocarbyl groups containing 1 or more carbon atoms, or may be linear, branched or cyclic substituted or unsubstituted hydrocarbyl groups having from 1-100 carbon atoms, or they may contain 30 or less carbon atoms. The copolymers may be prepared by coordination polymerization by means of contacting at least one vicinally disubstituted olefin monomer and ethylene and/or α-olefin, optionally with one or more other coordination polymerizable monomers, with a catalyst system comprising a monocyclopentadienyl heteroatom-containing Group 4 transition metal catalyst component.
Abstract:
A series of soluble α-diimine late transition metal catalysts has been invented comprising a substituted or unsubstituted catecholate ligand. The catalysts demonstrate high activity and selectivity for linear α-olefins. As such, these catalysts conveniently oligomerize ethylene. Typical activators as known to those of ordinary skill in the art are used to activate these transition metal catalysts. These catalysts can be used in a supported or unsupported form.
Abstract:
This invention relates to a compound represented by the formula: where M is a transition metal selected from group 4 of the periodic table; each R1 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and functional group, and any two R1 may be linked, provided that if the two R1 groups are linked, then they do not form a butadiene group when M is Zr; each R2 is independently selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, hexyl and the isomers thereof, provided that when R3 and R6 and or R12 and R15 form a 5 carbon ring, then each R2 is independently selected from the group consisting of ethyl, propyl, butyl, pentyl, hexyl and the isomers thereof; R3 is carbon or silicon; R4 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group; a is 0, 1, or 2; R5 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, R4 and R5 may be bound together to form a ring, and R5 and R3 may be bound together to form a ring; b is 0, 1, or 2; R6 is carbon or silicon; and R4 and R6 may be bound together to form a ring; each R7 is hydrogen; each R8 is independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, butyl, pentyl, hexyl and the isomers thereof; each R9 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group, and two R9 groups may be linked together to form a ring, R9 and R8 may be linked together to form a ring, R9 and R16 may be linked together to form a ring, R9 and R11 may be linked together to form a ring; c is 0, 1 or 2; R10 is -M2(R16)h— where M2 is B, Al, N, P, Si or Ge, h is an integer from 1 to 2, such that the valence of M2 is filled, and R16 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and two R16 groups may be linked together to form a ring; d is 0, 1, or 2; each R11 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group, and two R11 groups may be linked together to form a ring. R11 and R8 may be linked together to form a ring. R11 and R16 may be linked together to form a ring; e is 0, 1, or 2; where the sum of c, d, and e is 1, 2 or 3; R12 is carbon or silicon; R13 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and R13 and R14 may be bound together to form a ring, and R13 and R15 may be bound together to form a ring, when g is 0; f is 0, 1, or 2; R14 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and R14 and R12 may be bound together to form a ring, when f is 0; g is 0, 1, or 2; and R15 is carbon or silicon. This invention further relates to a process to polymerize unsaturated monomers using the above compositions.
Abstract:
A series of novel late transition metal catalysts for olefin oligomerization have been invented. The catalysts demonstrate high activity and selectivity for linear α-olefins.
Abstract:
A nonwoven fabric made from a composition comprising (a) a propylene-based elastomer characterized by including from about 5% to about 35% by weight units deriving from alpha-olefin and a heat of fusion, as determined by DSC, of less than 80 J/g, (b) a propylene-based thermoplastic polymer characterized by an MFR (ASTM D-1238 2.16 kg @ 230° C.) of from about 3 to about 300 dg/min, and a heat of fusion, as determined by DSC, of greater than 80 J/g, and (c) a feel modifier selected from the group consisting of (i) a high-MFR thermoplastic resin having an MFR (ASTM D-1238 2.16 kg @ 230° C.) in excess of 400 dg/min, (ii) a hydrocarbon resin, (iii) a polyolefin wax, (iv) a functionalized hydrocarbon resin, (v) a functionalized polyolefin, and (vi) a combination of two or more of the foregoing feel modifiers, and (d) optionally a slip aid.
Abstract:
As series of novel late transition metal catalysts for olefin oligomerization have been invented. The catalyst system includes a Group 8, 9 or 10 transition metal and an activator. The catalysts demonstrate high activity and selectivity for linear α-olefins. Preferably this invention relates to a catalyst system comprising the reaction product of: (a) an activator selected from the group consisting of alumoxane, aluminum alkyl, alkyl aluminum halide, alkylaluminum alkoxide, discrete ionic activator, and Lewis acid; and (b) a catalyst precursor wherein the catalyst precursor has the following formula: wherein (i) M is a Group-8, -9 , or -10 transition metal; (ii) N is nitrogen (iii) P is phosphorus; (iv) R1, R2, R3, and R4 are independently hydrocarbyl radicals; (v) Y is a hydrocarbyl bridge comprising a backbone wherein the backbone comprises a chain that is four or more carbon atoms long; (vi) X are independently abstractable ligands.
Abstract:
A non-woven fabric made from a composition prepared by combining a first propylene-based polymer blend, where the first polymer blend is prepared by combining a propylene-based elastomer with a propylene-based thermoplastic resin and where the first blend has an MFR (ASTM D-1238 2.16 kg @ (230° C.) equal to or less than 50 dg/min, with a second propylene-based polymer blend, where the second polymer blend is prepared by combining a propylene-based elastomer with a propylene-based thermoplastic resin and where said second blend has an MFR (ASTM D-1238 2.16 kg @ 230° C.) greater than 50 dg/min, where the propylene-based elastomers comprise from about 5% to 35% by weight units derived from ethylene or non-propylene alpha-olefin and have a heat of fusion, as determined by DSC, of less than 80 J/g, and where the propylene-based thermoplastic resins have a heat of fusion, as determined by DSC, equal to or greater than 80 J/g.