Patents by Inventor Sergio Gritti

Sergio Gritti 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).

  • Liquid compositions based on polyglycolethers having a high boiling point
    Patent number: 4115291
    Abstract: A process is disclosed for the preparation of monoalkyl ethers of polyoxyalkyleneglycols having a boiling point greater than 290.degree. C and suitable for use as a hydraulic brake fluid, wherein a mixture of ethylene oxide and propylene oxide is reacted in an anhydrous alkaline medium, and at elevated temperatures and with a monoalkylether of diethylene glycol, in a preferred weight ratio oxides/glycol-ether comprised between 1.2 and 1.8. Preferably, the monoalkylether of diethylene glycol is the monomethylether which may contain a small amount of monoethylene glycol. The reaction product may be adjusted as regards viscosity by dilution with a minor amount of an alkoxy triglycol, e.g., butoxy triethyleneglycol.
    Type: Grant
    Filed: February 28, 1974
    Date of Patent: September 19, 1978
    Assignee: Montedison S.p.A.
    Inventor: Sergio Gritti
  • Liquid compositions based on polyglycolethers having a high boiling point
    Patent number: 3991122
    Abstract: A process is disclosed for the preparation of monoalkyl ethers of polyoxyalkyleneglycols having a boiling point greater than 290.degree. C and suitable for use as a hydraulic brake fluid, wherein a mixture of ethylene oxide and propylene oxide is reacted in an anhydrous alkaline medium, and at elevated temperatures and with a monoalkylether of diethylene glycol, in a preferred weight ratio oxides/glycol-ether comprised between 1.2 and 1.8. Preferably, the monoalkylether of diethylene glycol is the monomethylether which may contain a small amount of monoethylene glycol. The reaction product may be adjusted as regards viscosity by dilution with a minor amount of an alkoxy triglycol, e.g., butoxy triethyleneglycol.
    Type: Grant
    Filed: July 28, 1971
    Date of Patent: November 9, 1976
    Assignee: Montedison S.p.A.
    Inventor: Sergio Gritti