公开(公告)号：EP0705269B1

公开(公告)日：1997-01-15

申请号：EP94920244.4

申请日：1994-06-16

Applicant: THE DOW CHEMICAL COMPANY

Inventor： DEVORE, David, D. ,  CRAWFORD, Lenore, H. ,  STEVENS, James, C. ,  TIMMERS, Francis, J. ,  MUSSELL, Robert, D. ,  WILSON, David, R. ,  ROSEN, Robert, K.

IPC: C07F17/00 ,  C08F10/00 ,  C08F4/649

CPC classification number: C07F17/00 ,  C08F4/65904 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F10/00 ,  C08F210/02 ,  C08F210/16 ,  C08F210/18 ,  Y10S526/901 ,  Y10S526/905 ,  Y10S526/943 ,  C08F212/08 ,  C08F2500/12 ,  C08F210/14 ,  C08F210/06 ,  C08F2500/17 ,  C08F236/20 ,  C08F2500/25

Abstract: Novel titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, π-bonded, group, said complexes corresponding to formula (I), wherein: M is titanium or zirconium in the +2 formal oxidation state; L is a group containing a cyclic, delocalized, anionic, π-system through which the group is bound to M, and which group is also bound to Z; Z is a moiety bound to M via a σ-bond, comprising boron, or a member of Group 14 of the Periodic Table of the Elements, and also comprising nitrogen, phosphorus, sulfur or oxygen, said moiety having up to 60 non-hydrogen atoms; and X is a neutral, conjugated or nonconjugated diene, optionally substituted with one or more hydrocarbyl groups, said X having up to 40 carbon atoms and forming a π-complex with M; are catalytically activated for use as addition polymerization catalysts. Preferably, L is an optionally substituted cyclopentadienyl or fused ring cyclopentadienyl group.

公开(公告)号：EP0689562A1

公开(公告)日：1996-01-03

申请号：EP94910840.0

申请日：1994-03-04

Applicant: THE DOW CHEMICAL COMPANY

Inventor： PARK, Chung, P. ,  STEVENS, James, C. ,  KNIGHT, George, W.

IPC: C08J9

CPC classification number: C08J9/14 ,  C08J2323/16 ,  Y10S526/943

Abstract: Disclosed is an ethylenic polymer foam structure comprising an ethylenic polymer material. The ethylenic polymer material contains a substantially linear ethylenic polymer having: a) a melt flow ratio, l10/l2 » 5.63; b) a molecular weight distribution, Mw/Mn, defined by the equation Mw/Mn « (l10/l2)-4.63; and c) a critical shear rate at onset of surface melt fracture of at least 50 percent greater than the critical shear rate at the onset of surface melt fracture of a linear olefin polymer having about the same l2 and Mw/Mn. The foam structures have toughness and elasticity similar to those formed from conventional LLDPE without the poor dimensional stability and foam quality associated with those structures. The foam structures have foam quality similar to those made with conventional LDPE but with enhanced toughness and elasticity. Further disclosed is a process for making the above foam structure and making it in a foam bead form. Further disclosed is a process for making an article of the foam beads.

公开(公告)号：EP0608369A1

公开(公告)日：1994-08-03

申请号：EP92922757.0

申请日：1992-10-15

Applicant: THE DOW CHEMICAL COMPANY

Inventor： LAI, Shih-Yaw ,  WILSON, John, R. ,  KNIGHT, Georges, W. ,  STEVENS, James, C.

IPC: C08J5 ,  B29C47 ,  B32B27 ,  C08F4 ,  C08F10 ,  C08F210 ,  C08G83 ,  C08J9 ,  C08L23 ,  D01F6 ,  D01F8 ,  D04H1 ,  D21H19 ,  C08F110

CPC classification number: C08G83/003 ,  B29C47/00 ,  B29C47/0004 ,  B29C47/0009 ,  B29C47/02 ,  B29K2995/0022 ,  B32B27/08 ,  B32B27/322 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02 ,  C08F110/00 ,  C08F110/02 ,  C08F210/16 ,  C08J5/18 ,  C08J2303/08 ,  C08J2323/08 ,  C08L23/02 ,  C08L23/04 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/16 ,  C08L2205/02 ,  C08L2314/06 ,  Y10S526/943 ,  Y10T428/2913 ,  Y10T442/30 ,  Y10T442/60 ,  C08L2666/04 ,  C08F2500/08 ,  C08F2500/09 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/05 ,  C08F2500/07 ,  C08F2500/03 ,  C08F2500/19 ,  C08F2500/17 ,  C08F210/14 ,  C08F2500/26

Abstract: L'invention concerne des polymères oléfiniques élastiques et sensiblement linéaires qui ont une aptitude au traitement semblable au polyéthylène de faible densité et forte ramification (LDPE), mais ont la résistance et la solidité du polyéthylène linéaire de faible densité (LLDPE). Les polymères ont des indices de traitement (PI) inférieurs ou égaux à 70 % des indices de traitement d'un polymère oléfinique linéaire comparables et un taux de cisaillement critique lorsqu'une facture de fusion en surface est sur le point de se produire d'au moins 50 % supérieur au taux de cisaillement critique lorsque va se produire une fracture de fusion de surface d'un polymère oléfinique linéaire classique à I2 et Mw/Mn sensiblement identique. Les nouveaux polymères peuvent également avoir de 0,01 à 3 ramifications à chaîne longue pour 1000 carbones le long de la structure du polymère et avoir une viscosité de cisaillement faible/nulle plus longue et une viscosité de cisaillement élevée plus faible que les polymères oléfiniques comparables. Les nouveaux polymères se caractérisent également par le fait qu'ils ont un rapport d'écoulement de fusion I10/I2 5,63, une distribution de poids moléculaire Mw/Mn définie par l'équation Mw/Mn (I10/I2) - 4,63, et une contrainte de cisaillement critique à l'apparition d'une grosse fracture de fusion supérieure à 4 x 106 dyne/cm2.

公开(公告)号：EP0767795B1

公开(公告)日：1999-12-22

申请号：EP95923977.3

申请日：1995-06-19

Applicant: THE DOW CHEMICAL COMPANY

Inventor： DEVORE, David, D. ,  TIMMERS, Francis, J. ,  STEVENS, James, C. ,  ROSEN, Robert, K.

IPC: C07F17/00 ,  C08F10/00

CPC classification number: C07F17/00 ,  C08F4/65908 ,  C08F4/65916 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02 ,  Y10S526/943

公开(公告)号：EP0889910A1

公开(公告)日：1999-01-13

申请号：EP97908071.0

申请日：1997-03-12

Applicant: THE DOW CHEMICAL COMPANY

Inventor： SPENCER, Lee ,  VANDERLENDE, Daniel, D. ,  STEVENS, James, C.

IPC: C08F2 ,  C08F4 ,  C08F10 ,  C08F14 ,  C08F210

CPC classification number: C08F10/00 ,  C08F4/61908 ,  C08F4/61912 ,  C08F4/61916 ,  C08F4/6192 ,  C08F14/06 ,  C08F210/16 ,  C08F2420/02 ,  C08F2/06 ,  C08F210/14 ,  C08F2500/08 ,  C08F2500/12

Abstract: A dispersible ionic catalyst activator, comprising an insoluble substrate material having a correlated settling rate less than 0.03 cm/sec, and from 0.001 to 10 mmol/g of an ionic catalyst activator deposited thereon which is particularly adapted for use in a continuous, solution polymerization process.

公开(公告)号：EP0755418A1

公开(公告)日：1997-01-29

申请号：EP95916240.0

申请日：1995-04-12

Applicant: THE DOW CHEMICAL COMPANY

Inventor： PARK, Chung, P. ,  CLINGERMAN, George, P. ,  TIMMERS, Francis, J. ,  STEVENS, James, C. ,  HENTON, David, E.

IPC: C08L23 ,  B65B5 ,  C08J5 ,  C08J9 ,  C08L25

CPC classification number: C08L23/06 ,  C08L23/00 ,  C08L23/04 ,  C08L25/02 ,  C08L25/06 ,  C08L2205/02 ,  C08L2666/04

Abstract: A polymer blend composition comprising: (a) from 0.5 to 99 percent by weight, based on the total weight of (a), (b), and (c), of an aliphatic α-olefin homopolymer or interpolymer, or an interpolymer of an α-olefin and a non-aromatic monomer interpolymerizable therewith; (b) from 0.5 to 99 percent by weight, based on the total weight of (a), (b), and (c), of a homopolymer or interpolymer of monovinylidene aromatic monomers, or an interpolymer of monovinylidene aromatic monomer and a monomer interpolymerizable therewith other than an aliphatic α-olefin; and (c) from 0.5 to 99 percent by weight, based on the total weight of (a), (b), and (c), of a substantially random interpolymer comprising an α-olefin and a vinylidene aromatic monomer. An expandable composition, comprising such polymer blend composition and an expanding agent; a foamed composition obtained by subjecting such an expandable composition to a foaming process; an article of manufacture molded from such a polymer blend composition; and a method of packaging using such a polymer blend composition.

公开(公告)号：EP0705269A1

公开(公告)日：1996-04-10

申请号：EP94920244.0

申请日：1994-06-16

Applicant: THE DOW CHEMICAL COMPANY

Inventor： DEVORE, David, D. ,  CRAWFORD, Lenore, H. ,  STEVENS, James, C. ,  TIMMERS, Francis, J. ,  MUSSELL, Robert, D. ,  WILSON, David, R. ,  ROSEN, Robert, K.

IPC: C07F ,  C08F ,  C07F17 ,  C08F4 ,  C08F10 ,  C08F36 ,  C08F210

CPC classification number: C07F17/00 ,  C08F4/65904 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F10/00 ,  C08F210/02 ,  C08F210/16 ,  C08F210/18 ,  Y10S526/901 ,  Y10S526/905 ,  Y10S526/943 ,  C08F212/08 ,  C08F2500/12 ,  C08F210/14 ,  C08F210/06 ,  C08F2500/17 ,  C08F236/20 ,  C08F2500/25

Abstract: Novel titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, π-bonded, group, said complexes corresponding to formula (I), wherein: M is titanium or zirconium in the +2 formal oxidation state; L is a group containing a cyclic, delocalized, anionic, π-system through which the group is bound to M, and which group is also bound to Z; Z is a moiety bound to M via a σ-bond, comprising boron, or a member of Group 14 of the Periodic Table of the Elements, and also comprising nitrogen, phosphorus, sulfur or oxygen, said moiety having up to 60 non-hydrogen atoms; and X is a neutral, conjugated or nonconjugated diene, optionally substituted with one or more hydrocarbyl groups, said X having up to 40 carbon atoms and forming a π-complex with M; are catalytically activated for use as addition polymerization catalysts. Preferably, L is an optionally substituted cyclopentadienyl or fused ring cyclopentadienyl group.

公开(公告)号：EP0640090A1

公开(公告)日：1995-03-01

申请号：EP93912135.0

申请日：1993-04-07

Applicant: THE DOW CHEMICAL COMPANY

Inventor： NEITHAMER, David, R. ,  STEVENS, James, C.

IPC: C07F5 ,  C07F7 ,  C07F17 ,  C08F4 ,  C08F10

CPC classification number: C07F17/00 ,  C07F7/28 ,  C08F4/65908 ,  C08F4/6592 ,  C08F10/00 ,  Y10S526/943

Abstract: Cationic Group 4 or Lanthanide metal catalysts containing a single, delocalized Π-bonded group are prepared by contacting a metal complex with a carbonium salt of a compatible, non-coordinating anion.

公开(公告)号：EP0632819A1

公开(公告)日：1995-01-11

申请号：EP93907617.0

申请日：1993-03-19

Applicant: THE DOW CHEMICAL COMPANY

Inventor： ROSEN, Robert, K. ,  NICKIAS, Peter, N. ,  DEVORE, David, D. ,  STEVENS, James, C. ,  TIMMERS, Francis, J.

IPC: C08F4 ,  C07F17 ,  C08F10

CPC classification number: C08F10/00 ,  C07F17/00 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/6592 ,  Y10S526/943 ,  C08F4/65922

Abstract: Addition polymerization catalysts comprising a metal complex containing a Group 4 metal in the +3 oxidation state, a delocalized π-bonding moiety, and at least one stabilizing ligand, optionally in combination with an activating cocatalyst.