公开(公告)号：JPH1030009A

公开(公告)日：1998-02-03

申请号：JP6391697

申请日：1997-03-04

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： TILSTON MICHAEL WILLIAM ,  SPRIGGS THOMAS EDWARD

IPC: C08F2/00 ,  C08F2/34 ,  C08F4/642 ,  C08F4/658 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08

Abstract: PROBLEM TO BE SOLVED: To provide a process for producing a polyblend in situ. SOLUTION: Ethylene and at least one kind of α-olefin comonomer containing 3-8 carbon atoms are brought into contact with a transition metal base catalyst system in vapor phase under polymerization condition in a pair of fluidized bed reactors connected in series. In the above process, the 1st reactor is operated at the dew point of the comonomer mixture or a temperature higher than the dew point by

公开(公告)号：JP2000302806A

公开(公告)日：2000-10-31

申请号：JP2000083804

申请日：2000-03-24

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： MADDEN JAMES MICHAEL ,  TILSTON MICHAEL WILLIAM

IPC: C08F2/34 ,  C08F2/00 ,  C08F4/642 ,  C08F210/16 ,  C08F297/08

Abstract: PROBLEM TO BE SOLVED: To obtain a field blend with a high productivity by transferring a mixture of an ethylene copolymer and an active catalyst which is formed in the first reactor in a series of fluidized-bed reactors into the second reactor to react the same with or without introduction of a cocatalyst other than the cocatalyst introduced in the first reactor. SOLUTION: In a method of contacting ethylene and a 3-8C α-olefin with a transition metal catalyst system in two reactors under polymerization conditions, about 0.01-0.8 mole and about 0.005-0.6 mole of the α-olefin and about 0.001-0.3 mole and about 0.2-3 mole of hydrogen per mole of ethylene are introduced in each of the reactors in which copolymers of low and high melt index or flow index are formed, respectively. No catalyst is charged into the second reactor and the reaction is carried out with or without introduction of a hydrocarbyl aluminum cocatalyst other than the hydrocarbyl aluminum cocatalyst introduced in the first reactor.

公开(公告)号：DE69702627T2

公开(公告)日：2001-04-12

申请号：DE69702627

申请日：1997-03-04

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： TILSTON MICHAEL WILLIAM ,  SPRIGGS THOMAS EDWARD

IPC: C08F2/00 ,  C08F2/34 ,  C08F4/642 ,  C08F4/658 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08

Abstract: A process for preparing an ethylene copolymer blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the provisos that: (a) the first reactor is operated at a temperature at or above the dew point of the mixture of monomers, but no higher than about 5 degrees C above said dew point; (b) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series; (c) other than the active catalyst referred to in proviso (b), no additional catalyst is introduced into the second reactor; (d) in the reactor in which a low melt index copolymer is made (1) the alpha-olefin is present in a ratio of from 0.01 to 0.4 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 0.3 mol of hydrogen per mol of ethylene; and (e) in the reactor in which a high melt index polymer is made: (1) optionally, alpha-olefin is present in a ratio of from 0.005 to 0.6 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 3 mols of hydrogen per mol of ethylene. h

公开(公告)号：BR0001524A

公开(公告)日：2000-10-31

申请号：BR0001524

申请日：2000-03-31

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： MADDEN JAMES DANIEL ,  TILSTON MICHAEL WILLIAM

IPC: C08F2/34 ,  C08F2/00 ,  C08F4/642 ,  C08F210/16 ,  C08F297/08 ,  C08F210/02 ,  C08F210/04 ,  C08F210/14 ,  C08F4/64

Abstract: A process comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the provisos that: (a) ethylene is introduced into each reactor; (b) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series; (c) other than the active catalyst referred to in proviso (b), no additional catalyst is introduced into the second reactor; (d) a hydrocarbyl aluminum cocatalyst is introduced into the first reactor and a different hydrocarbyl aluminum cocatalyst or no cocatalyst is introduced into the second reactor; (e) in the reactor in which a low melt or flow index copolymer is made: (1) the alpha-olefin is present in a ratio of about 0.01 to about 0.8 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of about 0.001 to about 0.3 mol of hydrogen per mol of ethylene; and (f) in the reactor in which a high melt or flow index polymer is made: (1) optionally, alpha-olefin is present in a ratio of about 0.005 to about 0.6 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of about 0.2 to about 3 mols of hydrogen per mol of ethylene.

公开(公告)号：DE69702627D1

公开(公告)日：2000-08-31

申请号：DE69702627

申请日：1997-03-04

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： TILSTON MICHAEL WILLIAM ,  SPRIGGS THOMAS EDWARD

IPC: C08F2/00 ,  C08F2/34 ,  C08F4/642 ,  C08F4/658 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08

Abstract: A process for preparing an ethylene copolymer blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the provisos that: (a) the first reactor is operated at a temperature at or above the dew point of the mixture of monomers, but no higher than about 5 degrees C above said dew point; (b) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series; (c) other than the active catalyst referred to in proviso (b), no additional catalyst is introduced into the second reactor; (d) in the reactor in which a low melt index copolymer is made (1) the alpha-olefin is present in a ratio of from 0.01 to 0.4 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 0.3 mol of hydrogen per mol of ethylene; and (e) in the reactor in which a high melt index polymer is made: (1) optionally, alpha-olefin is present in a ratio of from 0.005 to 0.6 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 3 mols of hydrogen per mol of ethylene. h

公开(公告)号：AT194994T

公开(公告)日：2000-08-15

申请号：AT97301421

申请日：1997-03-04

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： TILSTON MICHAEL WILLIAM ,  SPRIGGS THOMAS EDWARD

IPC: C08F2/00 ,  C08F2/34 ,  C08F4/642 ,  C08F4/658 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08

Abstract: A process for preparing an ethylene copolymer blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the provisos that: (a) the first reactor is operated at a temperature at or above the dew point of the mixture of monomers, but no higher than about 5 degrees C above said dew point; (b) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series; (c) other than the active catalyst referred to in proviso (b), no additional catalyst is introduced into the second reactor; (d) in the reactor in which a low melt index copolymer is made (1) the alpha-olefin is present in a ratio of from 0.01 to 0.4 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 0.3 mol of hydrogen per mol of ethylene; and (e) in the reactor in which a high melt index polymer is made: (1) optionally, alpha-olefin is present in a ratio of from 0.005 to 0.6 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 3 mols of hydrogen per mol of ethylene. h

公开(公告)号：AU1507397A

公开(公告)日：1997-09-11

申请号：AU1507397

申请日：1997-03-04

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： TILSTON MICHAEL WILLIAM ,  SPRIGGS THOMAS EDWARD

IPC: C08F2/00 ,  C08F2/34 ,  C08F4/642 ,  C08F4/658 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08 ,  C08F4/646

Abstract: A process for preparing an ethylene copolymer blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the provisos that: (a) the first reactor is operated at a temperature at or above the dew point of the mixture of monomers, but no higher than about 5 degrees C above said dew point; (b) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series; (c) other than the active catalyst referred to in proviso (b), no additional catalyst is introduced into the second reactor; (d) in the reactor in which a low melt index copolymer is made (1) the alpha-olefin is present in a ratio of from 0.01 to 0.4 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 0.3 mol of hydrogen per mol of ethylene; and (e) in the reactor in which a high melt index polymer is made: (1) optionally, alpha-olefin is present in a ratio of from 0.005 to 0.6 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 3 mols of hydrogen per mol of ethylene. h

公开(公告)号：CA2199078C

公开(公告)日：2000-11-28

申请号：CA2199078

申请日：1997-03-04

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： TILSTON MICHAEL WILLIAM ,  SPRIGGS THOMAS EDWARD

IPC: C08F2/00 ,  C08F2/34 ,  C08F4/642 ,  C08F4/658 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08

Abstract: A process comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the provisos that: (a) the first reactor is operated at a temperature at or above the dew point of the mixture of monomers, but no higher than about 5 degrees C above said dew point; (b) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series; (c) other than the active catalyst referred to in proviso (b), no additional catalyst is introduced into the second reactor; (d) in the reactor in which a low melt index copolymer is made: (1) the alpha-olefin is present in a ratio of about 0.01 to about 0.4 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of about 0.001 to about 0.3 mol of hydrogen per mol of ethylene; and (e) in the reactor in which a high melt index polymer is made: (1) optionally, alpha-olefin is present in a ratio of about 0.005 to about 0.6 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of about 0.001 to about 3 mols of hydrogen per mol of ethylene.

公开(公告)号：BR9809654A

公开(公告)日：2000-07-11

申请号：BR9809654

申请日：1998-05-19

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： KUPPERBLATT SANDRA ANN ,  EALER GEORGE EDWARD ,  TILSTON MICHAEL WILLIAM

IPC: C08L23/08 ,  C08F2/34 ,  C08F4/60 ,  C08F210/16

公开(公告)号：BR9701165A

公开(公告)日：1998-12-15

申请号：BR9701165

申请日：1997-03-04

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： TILSTON MICHAEL WILLIAM ,  SPRIGGS THOMAS EDWARD

IPC: C08F2/00 ,  C08F2/34 ,  C08F4/642 ,  C08F4/658 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08 ,  C08F6/12

Abstract: A process for preparing an ethylene copolymer blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the provisos that: (a) the first reactor is operated at a temperature at or above the dew point of the mixture of monomers, but no higher than about 5 degrees C above said dew point; (b) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series; (c) other than the active catalyst referred to in proviso (b), no additional catalyst is introduced into the second reactor; (d) in the reactor in which a low melt index copolymer is made (1) the alpha-olefin is present in a ratio of from 0.01 to 0.4 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 0.3 mol of hydrogen per mol of ethylene; and (e) in the reactor in which a high melt index polymer is made: (1) optionally, alpha-olefin is present in a ratio of from 0.005 to 0.6 mol of alpha-olefin per mol of ethylene; and (2) optionally, hydrogen is present in a ratio of from 0.001 to 3 mols of hydrogen per mol of ethylene. h