BE789870A - Olefins polymn catalyst - consisting of chromium oxide deposited on two silica supports with different pore volumes/sizes - Google Patents

Olefins polymn catalyst - consisting of chromium oxide deposited on two silica supports with different pore volumes/sizes

Info

Publication number
BE789870A
BE789870A BE789870DA BE789870A BE 789870 A BE789870 A BE 789870A BE 789870D A BE789870D A BE 789870DA BE 789870 A BE789870 A BE 789870A
Authority
BE
Belgium
Prior art keywords
chromium oxide
olefins
catalyst
polymn
sizes
Prior art date
Application number
Other languages
French (fr)
Original Assignee
Nat Petro Chem
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.)
Publication date
Publication of BE789870A publication Critical patent/BE789870A/en

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)
  • Catalysts (AREA)

Abstract

Olefins polymsn catalyst consists of (I) chromium oxide in a silica gel support having a pore volume of 2.00-3.00 pref. 2.5-3.00 cm3/g, most of the pores having a dia. of 200-600 pref. 300-600A, and a specific surface of 200-500 m2/g, and (II) chromium oxide on a silica gel support having a lower pore volume than that used in I, the major part of its pores having a smaller dia. than support I. Gives mixed polymers with good physical properties, esp. a high resistance to environmental stress cracking. Specif. 70% of the pores of the support of (I) have a dia. of 300-600A. The wt ratio of I:II is 80:20-20:80 pref. 50:50.
BE789870D 1972-10-09 Olefins polymn catalyst - consisting of chromium oxide deposited on two silica supports with different pore volumes/sizes BE789870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE789870 1972-10-09

Publications (1)

Publication Number Publication Date
BE789870A true BE789870A (en) 1973-04-09

Family

ID=3860273

Family Applications (1)

Application Number Title Priority Date Filing Date
BE789870D BE789870A (en) 1972-10-09 Olefins polymn catalyst - consisting of chromium oxide deposited on two silica supports with different pore volumes/sizes

Country Status (1)

Country Link
BE (1) BE789870A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0291824A3 (en) * 1987-05-20 1990-12-19 Quantum Chemical Corporation Improved chromium catalyst compositions and polymerization utilizing same
WO1996021684A1 (en) * 1995-01-09 1996-07-18 W.R. Grace & Co.-Conn. Multi-component polyolefin catalysts
EP0647661B2 (en) † 1993-10-08 2002-01-23 Phillips Petroleum Company Chromium catalyst compositions and polymerization processes therewith
US6982304B2 (en) 2003-12-22 2006-01-03 Union Carbide Chemicals & Plastics Technology Corporation Blow molding resins with improved ESCR

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0291824A3 (en) * 1987-05-20 1990-12-19 Quantum Chemical Corporation Improved chromium catalyst compositions and polymerization utilizing same
EP0647661B2 (en) † 1993-10-08 2002-01-23 Phillips Petroleum Company Chromium catalyst compositions and polymerization processes therewith
WO1996021684A1 (en) * 1995-01-09 1996-07-18 W.R. Grace & Co.-Conn. Multi-component polyolefin catalysts
US5714424A (en) * 1995-01-09 1998-02-03 W. R. Grace & Co.-Conn. Multi-component polyolefin catalysts
US6982304B2 (en) 2003-12-22 2006-01-03 Union Carbide Chemicals & Plastics Technology Corporation Blow molding resins with improved ESCR

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