Polymerization process
First Claim
1. A process to produce polyolefins comprising contacting a catalyst or catalyst system with olefin(s) in the presence of a fluorinated hydrocarbon at a polymerization temperature above the onset melting point of the wet polymer, wherein the fluorinated hydrocarbon is present at 5 to 99 volume %, based upon the total volume of fluorocarbons, any hydrocarbon solvents present and any unreacted monomer;
- provided that if the wet polymer does not have an onset melting point, then the polymerization temperature is 70°
C. or more and wherein the wet polymer is polymer that has been contacted for at least 12 hours at 50°
C. in a sealed chamber with the same fluorocarbon(s) and or hydrocarbons(s) used in the polymerization process medium present in the same proportions.
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Abstract
This invention relates to a process to polymerize olefins comprising contacting a catalyst or catalyst system with olefin(s) in the presence of a fluorocarbon at a temperature above the onset melting point of the polymer.
This invention also relates to a solution process to polymerize olefins comprising contacting a catalyst or catalyst system with olefin(s) in the presence of a fluorocarbon at a temperature above the onset melting point of the polymer.
122 Citations
56 Claims
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1. A process to produce polyolefins comprising contacting a catalyst or catalyst system with olefin(s) in the presence of a fluorinated hydrocarbon at a polymerization temperature above the onset melting point of the wet polymer, wherein the fluorinated hydrocarbon is present at 5 to 99 volume %, based upon the total volume of fluorocarbons, any hydrocarbon solvents present and any unreacted monomer;
- provided that if the wet polymer does not have an onset melting point, then the polymerization temperature is 70°
C. or more and wherein the wet polymer is polymer that has been contacted for at least 12 hours at 50°
C. in a sealed chamber with the same fluorocarbon(s) and or hydrocarbons(s) used in the polymerization process medium present in the same proportions. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
- provided that if the wet polymer does not have an onset melting point, then the polymerization temperature is 70°
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2. A solution process to produce polyolefins comprising contacting a catalyst or catalyst system with olefin(s) in the presence of a fluorinated hydrocarbon at a polymerization temperature above the melting point of the wet polymer, wherein the fluorinated hydrocarbon is present at 5 volume % or more, based upon the total volume of fluorocarbons and any hydrocarbon solvents present and wherein the wet polymer is polymer that has been contacted for at least 12 hours at 50°
- C. in a sealed chamber with the same fluorocarbon(s) and or hydrocarbons(s) used in the polymerization process medium present in the same proportions.
- View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
Specification