Patent US2982057A successfully refreshed from Google Patents.
Patent EP0045975A2 successfully refreshed from Google Patents.
EP0045975A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Components and catalysts for the polymerization of olefins
Assignee: Basell Technology Co BV
•
Filing: 1981-08-13
•
Granted: —
•
Expires: 2001-08-13
Abstract
Abstract Catalysts for the polymerization of alpha-olefins which comprise the reaction product of: a) an AI-alkyl compound; b) a silicon compound containing at least one Si-OR or Si-OCOR or Si-NR 2 bond, R being a hydrocarbyl radical; c) a solid comprising as essential support, a Mg dihalide in active form and supported therein a Ti halide or a halo-Ti-alcoholate or said halogenated Ti compound and a silicon compound as defined in b) in a molar ratio with the supported Ti compound from 0,1 to 5 mole of silicon compound per mole of Ti compound.
Inventors
- 👤 Sandro Parodi
- 👤 Roberto Nocci
- 👤 Umberto Dr. Giannini
- 👤 Pier Camillo Dr. Barbe
- 👤 Umberto Scata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 16:04
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/02; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
88 words
1) A solid component to be used in combination with an Al-Al-alkyl compound to form catalysts for the polymerization of alpha-olefins comprising an anhydrous Mg dihalide in active form as essential support and supported on said Mg dihalide a Ti halide or a Ti haloalcoholate and a silicon compound containing one or more Si-Or, Si-OCOR or Si-NR 2 bonds (R being a hydrocarbyl radical) in an amount corresponding to a molar ratio with the supported halogenated Ti compound of 0.1 to 5 mols per mol of the Ti-compound.
Claim 2
Dependent Claim
88 words
1) A solid component to be used in combination with an Al-Al-alkyl compound to form catalysts for the polymerization of alpha-olefins comprising an anhydrous Mg dihalide in active form as essential support and supported on said Mg dihalide a Ti halide or a Ti haloalcoholate and a silicon compound containing one or more Si-Or, Si-OCOR or Si-NR 2 bonds (R being a hydrocarbyl radical) in an amount corresponding to a molar ratio with the supported halogenated Ti compound of 0.1 to 5 mols per mol of the Ti-compound.
Claim 3
Dependent Claim
42 words
2) A solid component as defined in claim 1) in which the Mg dihalide is Mg dichloride and Mg dibromide, the Ti halide is a Ti-tetrahalide and the silicon compound is a phenyl di- or trialkoxysilane or an alkyl di- or trialkoxysilane.
Claim 4
Dependent Claim
82 words
3) Catalysts for the polymerizazion of alpha olefins comprising the product of reaction of the following components: a) an Al-trialkyl or an Al-alkyl compound containing 2 or more Al atms linked to each other through an oxygen or nitrogen atom or through S0 4 or SO 3 groups; b) a solid component as defined in claim 1) or a solid component comprising an anhydrous Mf dihalide in active form as essential support and supported on said dihalide a Ti-halide or a Ti-haloalcoholate.
Claim 5
Dependent Claim
22 words
4) Catalysts as defined in claim 3) in which component b ) is the solid as defined in claims 1) and 2).
Claim 6
Dependent Claim
72 words
5) Process for the polymerization of alpha olefins CH 2 =CHR in which R is an alkyl radical with 1 to 4 carbon atoms or an aryl radical and mixtures of said olefins with ethylene, characterized in that the polymerization process is carried out in liquid phase in presence or not of an inert hydrocarbon solvent or in gas phase, in presence of a catalyst as defined in claims 3) and 4).
Claim 7
Dependent Claim
12 words
6) Polymers of alpha olefins obtained with the process 1 claim 5).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.