The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 1979
Filed:
Jun. 09, 1978
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A process for dimerizing lower .alpha.-olefins using a catalyst comprising (A) at least one nickel compound selected from the group consisting of organic acid salts of nickel, inorganic acid salts of nickel and complexes of nickel, (B) a trialkyl aluminum, (C) at least one phosphorus-containing compound selected from the group consisting of tri-valent phosphorus compounds represented by the formulae: (I) PR.sup.1 R.sup.2 R.sup.3, (II) (R.sub.2.sup.1 N).sub.n PR.sub.3-n.sup.2 and (III) (R.sup.1 O).sub.n PR.sub.3-n.sup.2 (in which R.sup.1, R.sup.2 and R.sup.3 are each an alkyl, cycloalkyl, alkenyl, aryl or aralkyl group having up to 18 carbon atoms and n is an integer of 1 to 3), and (D) a halogenated phenol of the formula (IV), ##STR1## wherein X.sub.1, X.sub.2, X.sub.3, X.sub.4 and X.sub.5 are each a halogen or hydrogen atom or a hydroxyl group and at least one of them is a halogen atom.