BR9809654A - Process for preparing a polyethylene mixture in situ - Google Patents

Process for preparing a polyethylene mixture in situ

Info

Publication number
BR9809654A
BR9809654A BR9809654-0A BR9809654A BR9809654A BR 9809654 A BR9809654 A BR 9809654A BR 9809654 A BR9809654 A BR 9809654A BR 9809654 A BR9809654 A BR 9809654A
Authority
BR
Brazil
Prior art keywords
range
grams
reactor
situ
minutes
Prior art date
Application number
BR9809654-0A
Other languages
Portuguese (pt)
Inventor
Sandra Ann Kupperblatt
George Edward Ealer
Michael William Tilston
Original Assignee
Union Carbide Chem Plastic
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 Union Carbide Chem Plastic filed Critical Union Carbide Chem Plastic
Publication of BR9809654A publication Critical patent/BR9809654A/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
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers

Abstract

"PROCESSO PARA PREPARAR UMA MISTURA DE POLIETILENO IN SITU" Trata-se de um processo para compreende a contatação de etileno e um ou dois comonómeros alfa-olefinas, cada um possuíndo de 3 a 8 átomos de carbono, com um sistema catalisador de metal de transição que inclui um cocatalisador hidrocarbil alumínio em cada um dos dois reatores de leito fluidizado conectados em série, na fase gasosa, sob condições de polimerização. O copolímero formado no primeiro reator possui um índice de fluxo na faixa de cerca de 0,1 até cerca de 75 gramas por 10 minutos e uma densidade na faixa de 0,865 a 0,930 gramas por centímetro cúbico e o copolímero formado no segundo reator possui um índice de fusão na faixa de 0,2 até cerca de 100 gramas por 10 minutos e uma densidade na faixa de 0,900 até cerca de 0,965 gramas por centímetro cúbico, a relação em peso do copolímero do primeiro reator para o copolímero do segundo reator estando na faixa de cerca de 70:30 até cerca de 30:70, e a mistura in situ possui um índice de fluxo na faixa de cerca de 5 até cerca de 100 gramas por 10 minutos; uma relação do fluxo de fusão na faixa de cerca de 10 até cerca de 100; uma densidade na faixa de 0,880 a 0,960 por centímetro cúbico; e uma relação Mw/Mn na faixa de cerca de 2 até cerca de 20."PROCESS TO PREPARE A MIXTURE OF POLYETHYLENE IN SITU" This is a process to comprise contacting ethylene and one or two alpha-olefin comonomers, each having 3 to 8 carbon atoms, with a metal catalyst system of transition that includes an aluminum hydrocarbon cocatalyst in each of the two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions. The copolymer formed in the first reactor has a flow index in the range of about 0.1 to about 75 grams for 10 minutes and a density in the range of 0.865 to 0.930 grams per cubic centimeter and the copolymer formed in the second reactor has an index melting in the range of 0.2 to about 100 grams for 10 minutes and a density in the range of 0.900 to about 0.965 grams per cubic centimeter, the weight ratio of the first reactor copolymer to the second reactor copolymer being in the range from about 70:30 to about 30:70, and the in situ mixture has a flow index in the range of about 5 to about 100 grams for 10 minutes; a melt flow ratio in the range of about 10 to about 100; a density in the range of 0.880 to 0.960 per cubic centimeter; and an Mw / Mn ratio in the range of about 2 to about 20.

BR9809654-0A 1997-05-20 1998-05-19 Process for preparing a polyethylene mixture in situ BR9809654A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85895197A 1997-05-20 1997-05-20
PCT/US1998/010253 WO1998052982A1 (en) 1997-05-20 1998-05-19 A process for preparing an in situ polyethylene blend

Publications (1)

Publication Number Publication Date
BR9809654A true BR9809654A (en) 2000-07-11

Family

ID=25329588

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9809654-0A BR9809654A (en) 1997-05-20 1998-05-19 Process for preparing a polyethylene mixture in situ

Country Status (6)

Country Link
EP (1) EP0983307A1 (en)
JP (1) JP2001526725A (en)
AU (1) AU730068B2 (en)
BR (1) BR9809654A (en)
CA (1) CA2291106A1 (en)
WO (1) WO1998052982A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6486270B1 (en) * 2000-08-25 2002-11-26 Equistar Chemicals, Lp High molecular weight, medium density polyethylene
GB201421581D0 (en) * 2014-12-04 2015-01-21 Polyolefin Company Singapore Pte The Ltd A polyethylene blend used on its own as a carrier for microfiber fabrication process
CN111100364B (en) * 2018-10-26 2022-07-12 中国石油化工股份有限公司 Polyethylene composition, preparation method thereof and blow-molded packaging product
CN111100365B (en) * 2018-10-26 2022-07-12 中国石油化工股份有限公司 Polyethylene composition, preparation method thereof and extrusion molding packaging product

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5503914A (en) * 1994-07-08 1996-04-02 Union Carbide Chemicals & Plastics Technology Corporation Film extruded from an in situ blend of ethylene copolymers
US5589539A (en) * 1994-11-23 1996-12-31 Union Carbide Chemicals & Plastics Technology Corporation Process for preparing an in situ polyethylene blend
US5677375A (en) * 1995-07-21 1997-10-14 Union Carbide Chemicals & Plastics Technology Corporation Process for producing an in situ polyethylene blend
CA2188722A1 (en) * 1995-10-26 1997-04-27 George Norris Foster Process for preparing an in situ polyethylene blend
US5665818A (en) * 1996-03-05 1997-09-09 Union Carbide Chemicals & Plastics Technology Corporation High activity staged reactor process

Also Published As

Publication number Publication date
AU7580498A (en) 1998-12-11
EP0983307A1 (en) 2000-03-08
JP2001526725A (en) 2001-12-18
AU730068B2 (en) 2001-02-22
CA2291106A1 (en) 1998-11-26
WO1998052982A1 (en) 1998-11-26

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Legal Events

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