Aromaticity as a cornerstone of heterocyclic chemistry.

This invention relates to a co-oligomer having an Mn of 300 to 30,000 g/mol comprising 10 to 90 mol % propylene and 10 to 90 mol % of ethylene, wherein the oligomer has at least X % allyl chain ends, where: 1) X=(−0.94 (mole % ethylene incorporated)+100), when 10 to 60 mole % ethylene is present in the co-oligomer, and 2) X=45, when greater than 60 and less than 70 mole % ethylene is present in the co-oligomer, and 3) X=(1.83*(mole % ethylene incorporated)−83), when 70 to 90 mole % ethylene is present in the co-oligomer. This invention also relates to a homo-oligomer, comprising propylene, wherein the oligomer has: at least 93% allyl chain ends, an Mn of about 500 to about 20,000 g/mol, an isobutyl chain end to allylic vinyl group ratio of 0.8:1 to 1.2:1.0, and less than 100 ppm aluminum. This invention also relates to a process of making homo-oligomer, comprising propylene, wherein the productivity is greater than 4500 g/mmol Hf (or Zr)/hour.

High vinyl terminated propylene based oligomers

This invention relates to a functionalized co-oligomer having an Mn of 300 to 30,000 g/mol comprising 10 to 90 mol% propylene and 10 to 90 mol% of ethylene, wherein the oligomer has at least X% allyl chain ends, where: 1) X = (-0.94 (mol% ethylene incorporated) + 100), when 10 to 60 mol% ethylene is present in the co-oligomer, and 2) X = 45, when greater than 60 and less than 70 mol% ethylene is present in the co-oligomer, and 3) X = (1.83* (mol% ethylene incorporated) -83), when 70 to 90 mol% ethylene is present in the co-oligomer. This invention also relates to a functionalized homo-oligomer, comprising propylene, wherein the oligomer has: at least 93% allyl chain ends, an Mn of about 500 to about 20,000 g/mol, an isobutyl chain end to allylic vinyl group ratio of 0.8: 1 to 1.2: 1.0, and less than 100 ppm aluminum. This invention also relates to a process of making functionalized homo-or co-oligomer, comprising propylene, wherein the productivity is greater than 4500 g/mmol Hf (or Zr)/hour.

Functionalized High Vinyl Terminated Propylene Based Oligomers

This invention relates to a polymacromonomer comprising at least one macromonomer and from 0 to 20 wt % of a C 2 to C 12 comonomer, wherein the macromonomer has vinyl termination of at least 70%, and wherein the polymacromonomer has: a) a g value of less than 0.6, b) an Mw of greater than 30,000 g/mol, c) an Mn of greater than 20,000 g/mol, d) a branching index (g′) vis of less than 0.5, e) less than 25% vinyl terminations, f) at least 70 wt % macromonomer, based upon the weight of the polymacromonomer, g) from 0 to 20 wt % aromatic containing monomer, based upon the weight of the polymacromonomer and h) optionally, a melting point of 50° C. or more. This invention also relates to processes to make such polymacromonomers.

Polymacromonomer and process for production thereof

This invention relates to a process to functionalize propylene co-oligomer comprising contacting an alkene metathesis catalyst with a heteroatom containing alkene, and a propylene a co-oligomer having an Mn of 300 to 30,000 g/mol comprising 10 to 90 mol% propylene and 10 to 90 mol% of ethylene, wherein the oligomer has at least X% allyl chain ends, where: 1) X = (-0.94 (mole% ethylene incorporated) + 100), when 10 to 60 mole% ethylene is present in the co-oligomer, and 2) X = 45, when greater than 60 and less than 70 mole% ethylene is present in the co-oligomer, and 3) X = (1.83* (mole% ethylene incorporated) -83), when 70 to 90 mole% ethylene is present in the co-oligomer. This invention also relates to a process to functionalize propylene homo-oligomer comprising contacting an alkene metathesis catalyst with a heteroatom containing alkene, and a propylene homo-oligomer, comprising propylene, wherein the oligomer has: at least 93% allyl chain ends, an Mn of about 500 to about 20,000 g/mol, an isobutyl chain end to allylic vinyl group ratio of 0.8: 1 to 1.2: 1.0, and less than 100 ppm aluminum.

Olefin functionalization by metathesis reaction

Study on chain end structures of polypropylenes prepared with different symmetrical metallocene catalysts

Study on unsaturated structures of polyhexene, poly(4-methylpentene) and poly(3-methylpentene) prepared with metallocene catalysts

The detailed analysis of the vinylidene structure of metallocene-catalyzed polypropylene

NMR analysis of thione-thiol tautomerization of a triazine derivative in the solid state and in acetone solution

PURPOSE:To prepare nitrogen-containing compounds such as gamma-collidine, easily, by reacting 2,2,6,6-tetramethyl-4-hydroxytetrahydropyran etc. which are by-products in the preparation of methyl isobutyl ketone from acetone, with NH3. CONSTITUTION:2,2,6,6-Tetramethyl-4-hydroxytetrahydropyran (TTPH) or 2,2,6, 6-tetramethyl-4-oxotetrahydropyran (TTPK), is made to react with NH3 in the presence of a catalyst, such as I or VIII group metals in the periodic table, their compounds or Lewis acid nonmetallic compounds, at 300-400 deg.C when a raw material is TTPH, or at 230-450 deg.C when that is TTPK, to give gamma-collidine. When the reaction temperature is 200-360 deg.C, 2,2,6,6-tetramethyl-4-piperidone is obtained.

Yoshihisa Toda

Papers

Study on chain end structures of polypropylenes prepared with different symmetrical metallocene catalysts

Study on unsaturated structures of polyhexene, poly(4-methylpentene) and poly(3-methylpentene) prepared with metallocene catalysts

The detailed analysis of the vinylidene structure of metallocene-catalyzed polypropylene

NMR analysis of thione-thiol tautomerization of a triazine derivative in the solid state and in acetone solution

Preparation of nitrogenncontaining compound