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:
Dec. 01, 1987
Filed:
May. 02, 1986
Applicant:
Inventors:
Antonio Carbonaro, Milan, IT;
Silvano Gordini, San Donato Milanese, IT;
Salvatore Cucinella, San Donato Milanese, IT;
Assignee:
Enichem Elastomeri S.p.A., Palermo, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526142 ; 526 73 ; 526143 ;
Abstract
This invention concerns the production of 1,4-cis polybutadiene or copolymers of butadiene with other related diolefins through the catalytic polymerization or copolymerization of butadiene monomer by a continuous or discontinuous process carried out in the absence or substantial absence of solvents or diluents, operating in two successive phases (the first at a T<30.degree. C. and the second at a T=or>30.degree. C.) by control of the molecular weights.