Patents by Inventor Stanislao Spina

Stanislao Spina has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the polymerization or copolymerization of butadiene
    Patent number: 4699960
    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.
    Type: Grant
    Filed: June 24, 1986
    Date of Patent: October 13, 1987
    Assignee: Enichem Elastomeri, S.p.A.
    Inventors: Silvano Gordini, Antonio Carbonaro, Stanislao Spina