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US4636486A
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Polymerization catalysts
Assignee: Montedison SpA
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Filing: 1985-07-30
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Granted: 1987-01-13
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Expires: 2005-07-30
Abstract
Abstract Polymerization catalysts, particularly catalysts for the polymerization of olefins, are disclosed. The catalysts are prepared by mixing (A) an organometallic compound or hydride of a metal belonging to Groups I to III of the Mendelyeev Periodic Table; with (B) the product obtained by contacting (1) an addition product obtained by reacting a di-, tri-, or tetravalent titanium compound with an electron-donor compound, with (2) an anhydrous magnesium halide, in particular anhydrous MgCl 2 or MgBr 2 , which is either preactivated or mixed with the Ti compound under conditions which result in its activation; or by contacting (A) with (B') the product obtained by contacting a di-, tri, or tetravalent Ti compound with an electron-donor compound and a support consisting of an anhydrous Mg halide, in particular MgCl 2 or anhydrous MgBr 2 , which is either preactivated or mixed with the Ti compound and electron-donor under conditions such that the Mg halide is activated.
Inventors
- 👤 Adolfo Mayr
- 👤 Ermanno Susa
- 👤 Antonio Leccese
- 👤 Velmore Davoli
- 👤 Ettore Giachetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:17
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/02; C08F4/022; Y; Y10; Y10S; Y10S526/00; Y10S526/906
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
160 words
Polymerization catalysts prepared by mixing (A) a catalyst-forming component which is a hydride or organo-metallic compound of a metal belonging to Groups I to III of the Mendelyeev Periodic Table with (B) a supported catalyst-forming component which is the product obtained by contacting (1) an addition compound of di-, tri-, or tetravalent titanium selected from the group consisting of the halides, oxyhalides and alcoholates containing at least one molecule of an electron-donor bound to at least one Ti atom, or such a di-, tri-, or tetravelent titanium compound and a electron-donor compound, with (2) a support comprising an activated anhydrous magnesiunm dichloride characterized in that, in its X-rays powder spectrum, the diffraction line appearing at a lattice distance (d) of 2.56 Å, and which is most intense in the X-rays powder spectrum of the normal MgCl 2 is less intense and in its place a broadened halo appears at a lattice distance within the range of (d)=2.56 to 2.95 Å.
Claim 2
Dependent Claim
160 words
Polymerization catalysts prepared by mixing (A) a catalyst-forming component which is a hydride or organo-metallic compound of a metal belonging to Groups I to III of the Mendelyeev Periodic Table with (B) a supported catalyst-forming component which is the product obtained by contacting (1) an addition compound of di-, tri-, or tetravalent titanium selected from the group consisting of the halides, oxyhalides and alcoholates containing at least one molecule of an electron-donor bound to at least one Ti atom, or such a di-, tri-, or tetravelent titanium compound and a electron-donor compound, with (2) a support comprising an activated anhydrous magnesiunm dichloride characterized in that, in its X-rays powder spectrum, the diffraction line appearing at a lattice distance (d) of 2.56 Å, and which is most intense in the X-rays powder spectrum of the normal MgCl 2 is less intense and in its place a broadened halo appears at a lattice distance within the range of (d)=2.56 to 2.95 Å.
Claim 3
Dependent Claim
153 words
Polymerization catalysts prepared by mixing (A) a catalyst-forming component which is a hydride or organo-metallic compound of a metal belonging to Groups I to III of the Mendelyeev Periodic Table with (B) a supported catalyst-forming component which is the product obtained by contacting (1) an addition compound of di-, tri-, or tetravalent titanium selected from the group consisting of the halides, oxyhalides and alcoholates containing at least one molecule of an electron-donor compound bound to at least one Ti atom, or such a di-, tri-, or tetravalent titanium compound and an electron-donor compound, with (2) a support comprising an activated anhydrous magnesium dibromide characterized in that the diffraction line appearing at a lattice distance (d)=2.93 Å which is most intense in the X-rays powder spectrum of the normal magnesium dibromide is less intense and in its place a broadened halo appears at a lattice distance within the range of d=2.80 to 3.25 Å.
Claim 4
Dependent Claim
153 words
Polymerization catalysts prepared by mixing (A) a catalyst-forming component which is a hydride or organo-metallic compound of a metal belonging to Groups I to III of the Mendelyeev Periodic Table with (B) a supported catalyst-forming component which is the product obtained by contacting (1) an addition compound of di-, tri-, or tetravalent titanium selected from the group consisting of the halides, oxyhalides and alcoholates containing at least one molecule of an electron-donor compound bound to at least one Ti atom, or such a di-, tri-, or tetravalent titanium compound and an electron-donor compound, with (2) a support comprising an activated anhydrous magnesium dibromide characterized in that the diffraction line appearing at a lattice distance (d)=2.93 Å which is most intense in the X-rays powder spectrum of the normal magnesium dibromide is less intense and in its place a broadened halo appears at a lattice distance within the range of d=2.80 to 3.25 Å.
Claim 5
Dependent Claim
208 words
Polymerization catalysts prepared by mixing (A) a catalyst-forming component which is a hydride or organo-metallic compound of a metal belonging to Groups I to III of the Mendelyeev Periodic Table, with (B) a supported catalyst-forming component comprising the product obtained by contacting (1) an addition compound of a tri- or tetravalent titanium compound selected from the group consisting of the halides and alcoholates containing at least one molecule of an electron-donor compound or such tri-, or tetravalent titanium compound and an electron-donor compound, with (2) a support comprising an anhydrous magnesium dichloride or dibromide in an active form, the magnesium dichloride showing an X-ray powder spectrum in which the most intense diffraction line appearing in the spectrum of normal non-activated magnesium dichloride at the lattice distance of 2.56 Å is less intense, while in its place a broadened halo appears at a lattice distance within the range from 2.56 Å to 2.95 Å, the magnesium dibromide showing an X-ray powder spectrum in which the most intense diffraction line appearing in the spectrum of normal non-activated magnesium dibromide at the lattice distance of 2.93 Å is less intense while in its place a broadened halo appears at a lattice distance within the range of from 2.8 to 3.25 Å.
Claim 6
Dependent Claim
208 words
Polymerization catalysts prepared by mixing (A) a catalyst-forming component which is a hydride or organo-metallic compound of a metal belonging to Groups I to III of the Mendelyeev Periodic Table, with (B) a supported catalyst-forming component comprising the product obtained by contacting (1) an addition compound of a tri- or tetravalent titanium compound selected from the group consisting of the halides and alcoholates containing at least one molecule of an electron-donor compound or such tri-, or tetravalent titanium compound and an electron-donor compound, with (2) a support comprising an anhydrous magnesium dichloride or dibromide in an active form, the magnesium dichloride showing an X-ray powder spectrum in which the most intense diffraction line appearing in the spectrum of normal non-activated magnesium dichloride at the lattice distance of 2.56 Å is less intense, while in its place a broadened halo appears at a lattice distance within the range from 2.56 Å to 2.95 Å, the magnesium dibromide showing an X-ray powder spectrum in which the most intense diffraction line appearing in the spectrum of normal non-activated magnesium dibromide at the lattice distance of 2.93 Å is less intense while in its place a broadened halo appears at a lattice distance within the range of from 2.8 to 3.25 Å.
Claim 7
Dependent Claim
180 words
A supported component of catalysts for the polymerization of olefins comprising the product obtained by contacting (1) an addition compound of a tri- or tetravalent titanium compound selected from the group consisting of the halides and alcoholates containing at least one molecule of an electron-donor compound, or such tri- or tetravelent titanium compound and an electron-donor component with (2) a support comprising an anhydrous magnesium dichloride or dibromide in an active form, the magnesium dichloride showing an X-ray powder spectrum in which the most intense diffraction line appearing in the spectrum of normal non-activated magnesium dichloride at the lattice distance of 2.56 Å is less intense, while in its place a broadened halo appears at a lattice distance within the range from 2.56 to 2.95 Å, the magnesium dibromide showing an X-ray powder spectrum in which the most intense diffraction line appearing in the spectrum of normal non-activated magnesium dibromide at the lattice distance of 2.93 Å is less intense while in its place a broadened halo appears at a lattice distance within the range from 2.8 to 3.25 Å.
Claim 8
Dependent Claim
180 words
A supported component of catalysts for the polymerization of olefins comprising the product obtained by contacting (1) an addition compound of a tri- or tetravalent titanium compound selected from the group consisting of the halides and alcoholates containing at least one molecule of an electron-donor compound, or such tri- or tetravelent titanium compound and an electron-donor component with (2) a support comprising an anhydrous magnesium dichloride or dibromide in an active form, the magnesium dichloride showing an X-ray powder spectrum in which the most intense diffraction line appearing in the spectrum of normal non-activated magnesium dichloride at the lattice distance of 2.56 Å is less intense, while in its place a broadened halo appears at a lattice distance within the range from 2.56 to 2.95 Å, the magnesium dibromide showing an X-ray powder spectrum in which the most intense diffraction line appearing in the spectrum of normal non-activated magnesium dibromide at the lattice distance of 2.93 Å is less intense while in its place a broadened halo appears at a lattice distance within the range from 2.8 to 3.25 Å.
Claim 9
Dependent Claim
41 words
A polymerization catalyst according to claim 3, characterized in that the electron-donor compound contains at least one electro-negative group wherein the electron-donor atom (or atoms) is (or are) selected from the group consisting of O, N, P, S, As and Sb.
Claim 10
Dependent Claim
28 words
A polymerization catalyst according to claim 5, further characterized in that the electron-donor compound is selected from the group consisting of p-chlorophenol, dioxane, naphthadioxane, thiophene, benzenealdehyde and acetone.
Claim 11
Dependent Claim
20 words
A polymerization catalyst according to claim 3, characterized in that the molar ratio Ti compound/electron-donor compound is equal to 1.
Claim 12
Dependent Claim
33 words
A polymerization catalyst according to claim 3, characterized in that the Ti compound is present in the support in a quantity comprised between 0.01% and 30% by weight, with reference to the support.
Claim 13
Dependent Claim
34 words
A polymerization catalyst according to claim 8, further characterized in that the Ti compound is present in the support in a quantity comprised between 1% and 10% by weight, with reference to the support.
Claim 14
Dependent Claim
15 words
A polymerization catalyst according to claim 3, characterized in that component (A) is triethyl aluminum.
Claim 15
Dependent Claim
15 words
A polymerization cayalyst according to claim 3, characterized in that component (A) is triisobutyl aluminum.
Claim 16
Dependent Claim
29 words
A supported catalyst component according to claim 4 in which the electron-donor compound is selected from the compounds containing an O, N, P, S, As and Sb electron-donor atom.
Claim 17
Dependent Claim
16 words
A supported catalyst component according to claim 4, in which the electron-donor compound is an ester.
Claim 18
Dependent Claim
28 words
A supported catalyst component according to claim 4 obtained by contacting the titanium addition compound or the titanium compound and the electron-donor compound with a preactivated Mg dihalide.
Claim 19
Dependent Claim
30 words
A supported catalyst component according to claim 4 in which the titanium compound is TiCl 4 , the electron-donor compound is an ester and the Mg dihalide is Mg dichloride.
Claim 20
Dependent Claim
30 words
A supported catalyst component according to claim 4, in which the titanium compound is TiCl 4 , the electron-donor compound is an ester and the Mg dihalide is Mg dibromide.
Claim 21
Dependent Claim
30 words
A supported catalyst component according to claim 4, in which the titanium compound is TiCl 3 , the electron-donor compound is an ester and the Mg dihalide is Mg dichloride.
Claim 22
Dependent Claim
30 words
A supported catalyst component according to claim 4, in which the titanium compound is TiCl 3 , the electron-donor compound is an ester and the Mg dihalide is Mg dibromide.
References Cited (Backward Citations)
US4544717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |