METHOD FOR IMPROVING THE HOMO- AND COPOLYMERIZATION OF ETHYLENE

Jukka Seppälä; Jari Koivumäki

METHOD FOR IMPROVING THE HOMO- AND COPOLYMERIZATION OF ETHYLENE

Jukka Seppälä (Inventor), Jari Koivumäki (Inventor)

Not published at Aalto University

Research output: Patent

Abstract

The invention relates to a method for the homo- or copolymerization of ethylene with the aid of the catalytic action of a (pi)-cyclopentadienyl transition-metal compound and an aluminoxane compound. The invention discloses a means of increasing the activity of the said catalyst combination and for enhancing the copolymerization carried out using the catalyst system so that the comonomer concentration in the obtained copolymer will be higher. These objects are achieved by using a compound according to the formula CH2=CHR which takes part in the polymerization and in which R stands for a hydrocarbon group having at minimum 8 carbon atoms.

Original language	English
Patent number	WO9407924
IPC	C08F 110/ 02 A N
Priority date	07/10/1992
Publication status	Published - 14 Apr 1994
MoE publication type	H1 Granted patent

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title = "METHOD FOR IMPROVING THE HOMO- AND COPOLYMERIZATION OF ETHYLENE",

abstract = "The invention relates to a method for the homo- or copolymerization of ethylene with the aid of the catalytic action of a (pi)-cyclopentadienyl transition-metal compound and an aluminoxane compound. The invention discloses a means of increasing the activity of the said catalyst combination and for enhancing the copolymerization carried out using the catalyst system so that the comonomer concentration in the obtained copolymer will be higher. These objects are achieved by using a compound according to the formula CH2=CHR which takes part in the polymerization and in which R stands for a hydrocarbon group having at minimum 8 carbon atoms.",

author = "Jukka Sepp{\"a}l{\"a} and Jari Koivum{\"a}ki",

year = "1994",

month = apr,

day = "14",

language = "English",

type = "Patent",

note = "WO9407924; C08F 110/ 02 A N",

}

TY - PAT

T1 - METHOD FOR IMPROVING THE HOMO- AND COPOLYMERIZATION OF ETHYLENE

AU - Seppälä, Jukka

AU - Koivumäki, Jari

PY - 1994/4/14

Y1 - 1994/4/14

N2 - The invention relates to a method for the homo- or copolymerization of ethylene with the aid of the catalytic action of a (pi)-cyclopentadienyl transition-metal compound and an aluminoxane compound. The invention discloses a means of increasing the activity of the said catalyst combination and for enhancing the copolymerization carried out using the catalyst system so that the comonomer concentration in the obtained copolymer will be higher. These objects are achieved by using a compound according to the formula CH2=CHR which takes part in the polymerization and in which R stands for a hydrocarbon group having at minimum 8 carbon atoms.

AB - The invention relates to a method for the homo- or copolymerization of ethylene with the aid of the catalytic action of a (pi)-cyclopentadienyl transition-metal compound and an aluminoxane compound. The invention discloses a means of increasing the activity of the said catalyst combination and for enhancing the copolymerization carried out using the catalyst system so that the comonomer concentration in the obtained copolymer will be higher. These objects are achieved by using a compound according to the formula CH2=CHR which takes part in the polymerization and in which R stands for a hydrocarbon group having at minimum 8 carbon atoms.

M3 - Patent

M1 - WO9407924

ER -