US4282114A
Expired / Lapsed
US
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Catalyst for polymerizing α-olefins
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1980-01-28
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Granted: 1981-08-04
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Expires: 2000-01-28
Abstract
Abstract Disclosed is a catalyst for polymerizing alpha -olefins which comprises (A) a composition obtained by co-comminuting (a) a magnesium halide, (b) an organic acid ester, (c) a halogenated aliphatic or alicyclic hydrocarbon, (d) at least one ingredient selected from the group consisting of aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated aromatic hydrocarbons, liquid propylene oligomers and aromatic ethers, and (e) an aluminum halide optionally added thereto and then heat-treating the resulting mixture together with titanium tetrachloride; (B) an organic aluminum compound; and (C) an organic acid ester or a complex thereof with an aluminum halide.
Inventors
- 👤 Akira Ito
- 👤 Heizo Sasaki
- 👤 Masanori Osawa
- 👤 Masahiro Kouno
- 👤 Kenji Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:28
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/02; C08F4/022
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
90 words
A catalyst for polymerizing α-olefins comprising (A) a composition obtained by co-comminuting (a) a magnesium halide, (b) a carboxylic acid ester, (c) a halogenated aliphatic or alicyclic hydrocarbon, and (d) at least one ingredient selected from the group consisting of aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated aromatic hydrocarbons, liquid propylene oligomers and aromatic ethers and then heat-treating the resulting mixture at a temperature of 40° to 135° C. together with titanium tetrachloride; (B) a trialkylaluminum compound; and (C) a carboxylic ester or a complex thereof with an aluminum halide.
Claim 2
Dependent Claim
90 words
A catalyst for polymerizing α-olefins comprising (A) a composition obtained by co-comminuting (a) a magnesium halide, (b) a carboxylic acid ester, (c) a halogenated aliphatic or alicyclic hydrocarbon, and (d) at least one ingredient selected from the group consisting of aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated aromatic hydrocarbons, liquid propylene oligomers and aromatic ethers and then heat-treating the resulting mixture at a temperature of 40° to 135° C. together with titanium tetrachloride; (B) a trialkylaluminum compound; and (C) a carboxylic ester or a complex thereof with an aluminum halide.
Claim 3
Dependent Claim
95 words
A catalyst for polymerizing α-olefins comprising (A) a composition obtained by co-comminuting (a) a magnesium halide, (b) a carboxylic acid ester, (c) a halogenated aliphatic or alicyclic hydrocarbon, (d) at least one ingredient selected from the group consisting of aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated aromatic hydrocarbons, liquid propylene oligomers and aromatic ethers, and (e) an aluminum halide and then heat-treating the resulting mixture at a temperature of 40° to 135° C. together with titanium tetrachloride; (B) a trialkylaluminum compound; and (C) a carboxylic acid ester or a complex thereof with an aluminum halide.
Claim 4
Dependent Claim
95 words
A catalyst for polymerizing α-olefins comprising (A) a composition obtained by co-comminuting (a) a magnesium halide, (b) a carboxylic acid ester, (c) a halogenated aliphatic or alicyclic hydrocarbon, (d) at least one ingredient selected from the group consisting of aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated aromatic hydrocarbons, liquid propylene oligomers and aromatic ethers, and (e) an aluminum halide and then heat-treating the resulting mixture at a temperature of 40° to 135° C. together with titanium tetrachloride; (B) a trialkylaluminum compound; and (C) a carboxylic acid ester or a complex thereof with an aluminum halide.
Claim 5
Dependent Claim
16 words
The catalyst defined in claim 1 wherein said component (B) additionally includes an alkylaluminum halide compound.
Claim 6
Dependent Claim
16 words
The catalyst defined in claim 2 wherein said component (B) additionally includes an alkylaluminum halide compound.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |