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:
Jun. 29, 1976
Filed:
Dec. 09, 1974
Wolfgang Kampf, Haltern, DT;
Karl-Heinz Nordsiek, Marl, DT;
Chemische Werke Huls Aktiengesellschaft, Marl, DT;
Abstract
High molecular weight polybutadiene, polyisoprene and other hydrocarbon polymers having a high vinyl and a low 1,4-trans-double bond content, which are useful in the manufacture of tire treads and carcasses, are produced employing as catalyst system (a) a cobalt compound; (b) a halogen-containing organoaluminum compound; and (c) a tris-(aryl) phosphite of the formula P--(OR.sub.1), (--OR.sub.2),--OR.sub.3 wherein R.sub.1, R.sub.2 and R.sub.3 are monocyclic halogenated aryl, or diaryl, naphthyl, anthracenyl or phenanthryl or the corresponding halogenated and/or alkylated polycyclic aryl; and optionally (d) an H-acidic compound, e.g., water.