Patent classifications
C08F4/7098
METHOD FOR PREPARING SUPPORTED OLEFIN POLYMERIZATION CATALYST, RESULTING CATALYST AND APPLICATION THEREOF
A method for preparing a supported olefin polymerization catalyst, comprising: step 1, activating a COF at 0? C.-800? C. for 0.1-48 hours under inert atmosphere or vacuum protection; optionally, step 2, reacting the activated COF with an auxiliary agent in a reaction medium at a temperature of 5? C.-120? C. under inert atmosphere or vacuum protection, and performing solid-liquid separation to obtain a solid phase material, wherein the auxiliary agent is selected from a metal alkyl compound, boron halothane, an alkyl aluminum oxide, a modified methyl aluminoxane, a Lewis acid, and a Grignard reagent; and step 3, under inert atmosphere or vacuum protection, reacting the solid phase material with the olefin polymerization catalyst in a reaction medium at ?30? C.-150? C., performing solid-liquid separation, and collecting the solid phase material as the supported olefin polymerization catalyst. A supported olefin polymerization catalyst and an application thereof. The supported catalyst can maintain higher catalytic activity for a long time in olefin polymerization.
NICKEL CATALYSTS WITH TWO METAL CATIONS FOR HOMOPOLYMERIZATION AND COPOLYMERIZATION
This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.
Fluorinated polymerization catalysts and methods of making and using the same
Described herein are polymerization catalysts having a structure according to formula (1): ##STR00001##
wherein ##STR00002##
is a diimine ligand, A.sup.? is a counter anion, and R.sup.2 is a fluorinated alkane, alkene or alkyne, a fluorinated aromatic, a fluorinated cycloalkane or cylcoalkene, a fluorinated heteroaromatic, or a fluorinated heterocyclic. Also described herein are polymers having a terminus having a structure according to Formula (3): ##STR00003##
wherein R.sup.2 is a fluorinated alkane, alkene or alkyne, a fluorinated aromatic, a fluorinated cycloalkane or cylcoalkene, a fluorinated heteroaromatic, or a fluorinated heterocyclic.
Fluorinated polymerization catalysts and methods of making and using the same
Described herein are polymerization catalysts having a structure according to formula (1): ##STR00001##
wherein ##STR00002##
is a diimine ligand, A.sup.? is a counter anion, and R.sup.2 is a fluorinated alkane, alkene or alkyne, a fluorinated aromatic, a fluorinated cycloalkane or cylcoalkene, a fluorinated heteroaromatic, or a fluorinated heterocyclic. Also described herein are polymers having a terminus having a structure according to Formula (3): ##STR00003##
wherein R.sup.2 is a fluorinated alkane, alkene or alkyne, a fluorinated aromatic, a fluorinated cycloalkane or cylcoalkene, a fluorinated heteroaromatic, or a fluorinated heterocyclic.
Nickel catalysts with two alkali ions for homopolymerization and copolymerization
This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.
Nickel catalysts with single metal cations for homopolymerization and copolymerization
This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.
FLUORINATED POLYMERIZATION CATALYSTS AND METHODS OF MAKING AND USING THE SAME
Described herein are polymers comprising a terminus having a structure according to formula (1):
##STR00001##
wherein R is a fluorinated alkane, alkene or alkyne, a fluorinated aromatic, a fluorinated cycloalkane or cylcoalkene, a fluorinated heteroaromatic, or a fluorinated heterocyclic.
FLUORINATED POLYMERIZATION CATALYSTS AND METHODS OF MAKING AND USING THE SAME
Described herein are polymers comprising a terminus having a structure according to formula (1):
##STR00001##
wherein R is a fluorinated alkane, alkene or alkyne, a fluorinated aromatic, a fluorinated cycloalkane or cylcoalkene, a fluorinated heteroaromatic, or a fluorinated heterocyclic.
Nickel catalysts with single alkali ions for homopolymerization and copolymerization
This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.
METHOD OF MAKING A FUNCTIONALIZED ELASTOMER
The present invention is directed to a method of making an amine functionalized elastomer, comprising the steps of polymerizing at least one first monomer selected from the group consisting of 1,3-butadiene and isoprene and a second monomer of formula I in the presence of a polymerization catalyst in a hydrocarbon solvent to form a first copolymer in solution;
##STR00001##
where R.sup.1 is phenylene, a linear or branched alkane diyl group containing from 1 to 10 carbon atoms, or a combination of one or more phenylene groups and one or more linear or branched alkane diyl groups containing from 1 to 10 carbon atoms; and R.sup.2 is methyl or ethyl; and mixing the first copolymer in solution with a protic solvent followed by stirring to convert the first copolymer to a second copolymer given by the formula poly(M1 co M2) wherein M1 is the first monomer and M2 is of formula II
##STR00002##
where R.sup.1 is as previously defined.