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:
Oct. 13, 1987
Filed:
Jun. 24, 1986
Applicant:
Inventors:
Silvano Gordini, San Donato Milanese, IT;
Antonio Carbonaro, Milan, IT;
Stanislao Spina, San Donato Milanese, IT;
Assignee:
Enichem Elastomeri, S.p.A., Palermo, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 81 ; 526 79 ; 526 86 ; 526 92 ; 526137 ; 526138 ; 526142 ; 526162 ; 526164 ; 526335 ; 526337 ;
Abstract
The present invention relates to the production of 1,4-cis-polybutadiene and of copolymers of butadiene with other conjugated diolefins, by means of the catalytic polymerization or copolymerization of monomer butadiene, by an either continuous or batch process, operating in the presence or in the absence of diluents, and carrying out a portionwise addition, during the polymerization, of a portion of the organometallic compound of aluminum (or of the related hydride derivative), constituiting also one of catalytic components.