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Isotactic polypropylene containing polymers

A polypropylene homopolymer, polypropylene technology, applied in the direction of titanium organic compounds, compounds of group 4/14 elements of the periodic table, group 4/14 organic compounds without C-metal bonds, etc. The key and short lifespan of active and isomer-specific catalysts

Inactive Publication Date: 2007-11-07
CORNELL RES FOUNDATION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of approach, Matthews et al. (US Pat. No. 4,491,652) prepared block copolymers in which not all chains were active and whose lifetimes were short; The essential

Method used

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  • Isotactic polypropylene containing polymers
  • Isotactic polypropylene containing polymers
  • Isotactic polypropylene containing polymers

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The preparation of the propylene homopolymer of the first embodiment is illustrated in Working Example IV. The catalysts used in Working Example IV are shown below.

[0022] Complex

R 1

R 2

R 3

1

2

3

4

5

6

t Bu

i PR

Et

Me

h

Me

t Bu

i PR

Me

Me

Me

Me

Ph

Ph

Ph

Ph

Ph

h

[0023] We now turn to the second embodiment in this text. The copolymer of the second embodiment can be prepared by introducing both propylene and comonomer into a pressure reactor maintained at 1-1,000 psi in the presence of the catalyst defined in the seventh embodiment, The amount of catalyst is 1-1×10 6mmol / mol. The catalyst is preferably used in the presence of a large excess of activator, eg, methylaluminoxane (MAO), with a [Al]:[Ti] molar ratio of 100-200:1, eg, 125-175:1. The reaction is carried out, for example, for 1-48 hours at a reaction...

Embodiment I

[0041] Synthesis of Complex 2

[0042] For ligand B (2,4-diisopropyl-6-[phenyl(pentafluorophenylimino)methyl]-phenol), N-pentafluorophenyl-benzamide (1.92 g, 2,4 -Diisopropylphenol (1.19 g, 6.70 mmol) was reacted as described above to give the crude product as a yellow oil. The crude product was recrystallized from methanol at -20°C to afford Ligand B as a yellow crystalline solid (1.07 g, 36%).

[0043] 1 H NMR (CDCl 3 , 300MHz): 7.41-7.34(m, 3H, PhH), 7.28(d, 1H, J=2.1Hz, ArH), 7.19(m, 2H, PhH), 6.70(d, 1H, J=2.1Hz, ArH ), 3.48, 2.70 (sept, 1H each, J=6.9Hz, CHMe 2 ), 1.31, 1.09(d, 6H each, J=6.9Hz, CH(CH 3 ) 2 ). 13 C NMR (CDCl 3 , 125MHz): 181.8 (C=N), 158.6 (ArC-OH), 138.8 (Ar F C-F, m, 1 J CF =245Hz), 138.5 (ArC or PhC), 138.0 (Ar F C-F, m, 1 J CF =250Hz), 137.8 (Ar F C-F, m, 1 J CF =245Hz), 137.4, 135.1, 130.4, 130.0, 128.5, 128.2, 127.1 (ArC or PhC), 124.0 (Ar F C ipso , m), 118.3 (ArC), 33.6, 27.0 (ArCHMe 2 ), 24.2, 22.7 (ArCH(CH 3 ) 2 ). 19 F ...

Embodiment II

[0047] Synthesis of Complex 3

[0048] For ligand C (2-ethyl-4-methyl-6-[phenyl(pentafluorophenylimino)methyl]-phenol), N-pentafluorophenyl-benzamide ( 2.00g, 6.96mmol) and phosphorus pentachloride (1.45g, 6.96mmol) were combined as described above to give the geminal chloroalkane imine, which was reacted with aluminum chloride (1.11g, 8.35mmol) and 2-ethyl-4 -Methylphenol (0.95 g, 6.96 mmol) was reacted as described above to afford the crude product as a yellow oil. The crude product was recrystallized from methanol at -20°C to obtain Ligand C as a yellow powder (0.92 g, 33%).

[0049] 1 H NMR (CDCl 3 , 300MHz): 7.42-7.33(m, 3H, PhH), 7.18(m, 2H, PhH), 7.16.6.65(m, 1H each, ArH), 2.75(q, 2H, J=7.5Hz, CH 2 Me), 2.14(s, 3H, CH 3 ), 1.29(t, 3H, J=7.5Hz, CH 2 CH 3 ). 13 C NMR (CDCl 3 , 125MHz): 181.7 (C=N), 158.7 (ArC-OH), 138.7 (Ar F C-F, m, 1 J CF =245Hz), 138.0 (Ar F C-F, m, 1 J CF =250Hz), 137.7 (Ar F C-F, m, 1 J CF =250Hz), 135.8, 135.1, 133.1, 130.7, 130.0...

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Abstract

Isotactic polypropylene homopolymers or segments of low polydispersity are prepared using phenoxyketimine catalysts containing N-pentafluorophenyl groups.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 60 / 629,347, filed November 22, 2004, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to defined polydispersity, isotactic polypropylene-containing polymers. Background of the invention [0004] Isospecific propylene polymerisation has already been practiced. See, eg, Blunt (US Patent No. 4,408,019); Abe (U.S. 2004 / 0077815); Busico, V., et al., Macromolecules 36, 3806-3808 (2003); and Busico, V., et al., Macromolecules 37, 8201-8203 ( 2004). However, such aggregations are limited in how polydisperse one can achieve. The disclosure of Busico is the only one in the above-mentioned documents that obtains polydispersity less than 1.8, but does not obtain polydispersity less than 1.2, and obtains polydispersity 1.2 and 1.3 only in the case of low number average molecular weight an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/28C08F210/06B01J31/00
CPCC08F297/08C08F297/083C07F7/006C08F110/06C08F10/00C07F7/003C08F2500/15C08F2500/03C08F4/64048
Inventor G·W·科亚特斯A·马森
Owner CORNELL RES FOUNDATION INC
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