Patents by Inventor Yves de Zarauz

Yves de Zarauz 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).

  • Elastomer composition for pneumatic tire treads
    Patent number: 4195013
    Abstract: Tire treads having both suitable skid resistance and hysteresis properties can be made from ethylene-.alpha.-olefin-nonconjugated diene elastomeric polymers by modifying the polymers with a sterically hindering unhalogenated mono-olefin monomer or with a mixture of sterically hindering unhalogenated mono-olefin monomers, such as norbornene and its unhalogenated derivatives.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: March 25, 1980
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventor: Yves de Zarauz
  • Polymerization process
    Patent number: 4152505
    Abstract: Homopolymers of conjugated dienes and copolymers of conjugated dienes with other conjugated dienes or with vinyl aromatic compounds having an elastomeric character are prepared by use of a catalytic system formed of the reaction product of (a) an organometallic compound of a metal of Group IIIA of the Mendeleev periodic table of elements with (b) at least one electron-donor compound containing at least one hetero-atom.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: May 1, 1979
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventor: Yves de Zarauz
  • Polymerization process
    Patent number: 4148985
    Abstract: Homopolymers of conjugated dienes and copolymers of conjugated dienes with other conjugated dienes or with vinyl aromatic compounds having an elastomeric character are prepared by use of a catalytic system formed of the reaction product of (a) an organometallic compound of a metal of Group IIIA of the Mendeleev periodic table of elements with (b) at least one electron-donor compound containing at least one hetero-atom.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: April 10, 1979
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventor: Yves de Zarauz
  • Polymerization process
    Patent number: 4129705
    Abstract: Homopolymers of conjugated dienes and copolymers of conjugated dienes with vinyl aromatic compounds or with other conjugated dienes having improved properties and an elastomeric character are prepared by use of a catalytic composition which comprises (a) an organo-lithium initiator and (b) a tercatalyst system comprising (b.sub.1) a compound of barium or strontium or calcium, (b.sub.2) an organometallic compound of a metal of Group 2B or 3A of the Mendeleev periodic table of elements and (b.sub.3) an alkali metal alcoholate ether or amine.
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: December 12, 1978
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventor: Yves de Zarauz
  • Polymerization process
    Patent number: 4110525
    Abstract: Homopolymers of conjugated dienes and copolymers of conjugated dienes with other conjugated dienes or with vinyl aromatic compounds having an elastomeric character are prepared by use of a catalytic system formed of the reaction product of (a) an organometallic compound of a metal of Group IIIA of the Mendeleev periodic table of elements with (b) at least one electron-donor compound containing at least one hetero-atom.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: August 29, 1978
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventor: Yves de Zarauz
  • Catalytic composition
    Patent number: 4092268
    Abstract: Polymers of conjugated dienes and copolymers of conjugated dienes with vinyl aromatic compounds or with other conjugated dienes having a high content of trans-1,4 linkages and a low content of 1,2 or 3,4 linkages and an elastomeric character are prepared by use of a catalytic composition which comprises (a ) an organo-lithium initiator and (b) a cocatalyst system comprising a compound of barium or strontium and an organometallic compound of a metal of Group IIB or IIIA of the Mendeleev periodic table of elements.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: May 30, 1978
    Assignee: Compagnie Generale des Etablissements Michelin, raison sociale Michelin & Cie
    Inventor: Yves de Zarauz
  • Butadiene polymerization process
    Patent number: 4080492
    Abstract: Homopolymers of butadiene and copolymers of butadiene with vinyl aromatic compounds or with other conjugated dienes, which polymers have a high content of trans-1,4 linkages and a low content of 1,2 linkages, are prepared by use of a novel anionic catalytic composition which comprises (a) an organo-lithium initiator and (b) a cocatalyst system comprising a compound of barium or strontium and an organometallic compound of a metal of Group IIB or IIIA of the Mendeleev periodic table of elements.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: March 21, 1978
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventor: Yves de Zarauz
  • Ept elastomers
    Patent number: 4078131
    Abstract: Elastomers of the ethylene-propylene-termonomer type.In accordance with the invention these elastomers have a bimodal distribution of the molecular weights, each principal fraction having, on the one hand, a wide distribution of the molecular weights and a monomer composition which is different from that of the other principal fraction, but, on the other hand, a distribution of composition as a function of the molecular weights which is very narrow around the average value contemplated for the fraction.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: March 7, 1978
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventor: Yves DE Zarauz
  • Bulk polymerization using an organosiloxane anti-foam compound
    Patent number: 3962200
    Abstract: The deleterious foam encountered during the bulk polymerization of diene monomers with each other or with vinyl aromatic compounds can be prevented by conducting the bulk polymerization in the presence of an organosiloxane anti-foam compound, which compound does not adversely affect either the coordination catalyst system or the properties of the polymer product.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: June 8, 1976
    Assignee: Compagnie Generale des Etablissements Michelin, raison sociale Michelin & Cie
    Inventor: Yves de Zarauz