GB1490414A - Control of polymer particle size in olefin polymerization - Google Patents

Control of polymer particle size in olefin polymerization

Info

Publication number
GB1490414A
GB1490414A GB794575A GB794575A GB1490414A GB 1490414 A GB1490414 A GB 1490414A GB 794575 A GB794575 A GB 794575A GB 794575 A GB794575 A GB 794575A GB 1490414 A GB1490414 A GB 1490414A
Authority
GB
United Kingdom
Prior art keywords
particle size
catalyst
ethylaluminium
feb
increase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB794575A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Co
Original Assignee
Monsanto Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Monsanto Co filed Critical Monsanto Co
Publication of GB1490414A publication Critical patent/GB1490414A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

1490414 Ziegler polymerization of olefins MONSANTO CO 26 Feb 1975 [27 Feb 1974] 7945/75 Heading C3P The particle size of olefin homo- or copolymers is controlled so that less than 5% by weight of the particles are retained on a 14 mesh (U.S. Standard) screen, and not more than 15% pass through a 100 mesh screen, by polymerizing an olefin contained in a gas stream using a Ziegler-type catalyst comprising (i) a Group IVa, Va, VIa, VIIa or VIII metal compound and (ii) a group I, II or III organometallic compound, the catalyst being associated with a solid carrier and maintained thus in a fluidized state; the method of control comprises varying the amount of the Group IVa, Va, VIa compound upon the carrier, an increase in the catalyst content causing an increase in particle size, and vice versa. In the examples triethylaluminium, diethyl aluminium ethoxide, ethylaluminium sesquioxide and ethylaluminium diethoxide are used in conjunction with VOCl 3 and pre-treated silica gel.
GB794575A 1974-02-27 1975-02-26 Control of polymer particle size in olefin polymerization Expired GB1490414A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44624574A 1974-02-27 1974-02-27

Publications (1)

Publication Number Publication Date
GB1490414A true GB1490414A (en) 1977-11-02

Family

ID=23771868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB794575A Expired GB1490414A (en) 1974-02-27 1975-02-26 Control of polymer particle size in olefin polymerization

Country Status (7)

Country Link
JP (1) JPS50119885A (en)
BE (1) BE826019A (en)
DE (1) DE2508328A1 (en)
FR (1) FR2262049B3 (en)
GB (1) GB1490414A (en)
IT (1) IT1033244B (en)
NL (1) NL7502153A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405495A (en) 1980-06-30 1983-09-20 Union Carbide Corporation Catalyst impregnated on fine silica, process for preparing, and use for ethylene polymerization
US6512061B1 (en) 1999-01-13 2003-01-28 Chisso Corporation Process for producing polypropylene or propylene random copolymer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007057C2 (en) * 1980-02-26 1986-11-06 Hüls AG, 4370 Marl Process for the production of powdery polyolefins by polymerisation in the gas phase
CA1174800A (en) * 1981-08-24 1984-09-18 Charles Cozewith Gas phase method for producing copolymers of ethylene and higher alpha-olefins
US8058367B2 (en) * 2004-08-27 2011-11-15 Chevron Phillips Chemical Company Lp Methods and systems for controlling polymer particle size

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405495A (en) 1980-06-30 1983-09-20 Union Carbide Corporation Catalyst impregnated on fine silica, process for preparing, and use for ethylene polymerization
US4521573A (en) * 1980-06-30 1985-06-04 Union Carbide Corporation Catalyst impregnated on fine silica, process for preparing, and use for ethylene polymerization
US6512061B1 (en) 1999-01-13 2003-01-28 Chisso Corporation Process for producing polypropylene or propylene random copolymer

Also Published As

Publication number Publication date
JPS50119885A (en) 1975-09-19
FR2262049B3 (en) 1977-11-04
FR2262049A1 (en) 1975-09-19
NL7502153A (en) 1975-08-29
IT1033244B (en) 1979-07-10
DE2508328A1 (en) 1975-08-28
BE826019A (en) 1975-08-26

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee