Patents by Inventor Neal O. Brace

Neal O. Brace 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).

  • Patent number: 4517384
    Abstract: Perfluoroalkyl alkylene vinyl sulfoxides and sulfones of the formula ##STR1## wherein R.sub.f is perfluoroalkyl of 3 to 18 carbon atoms, R.sub.1 is hydrogen or lower alkyl, m is 1 to 3 and n is 1 or 2, intermediates thereof, methods for their preparation, and the uses of such compounds to render cellulosic, and natural and synthetic polyamide, materials hydrophobic and oleophobic are described.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: May 14, 1985
    Assignee: Ciba-Geigy Corporation
    Inventor: Neal O. Brace
  • Patent number: 4158672
    Abstract: Polyfluoroalkylthio alcohols and esters thereof are disclosed with utility as intermediates for the synthesis of fluorochemicals with low free surface energies having oil and water repellent properties. The novel alcohols and esters are obtained by a free radical catalyzed addition of polyfluoroalkylthiols to acetylenic alcohols or esters thereof. The alcohols are employed in preparation of fluorine containing polyurethanes which are useful as finishes to provide oil and water repellency to textiles and as additives to plastics to provide mold release and other desirable properties.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: June 19, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Robert E. A. Dear, Neal O. Brace
  • Patent number: 4144244
    Abstract: The compounds disclosed are of the formula ##STR1## and the anhydrides thereof wherein R.sub.f is a perfluoroalkyl group,Y is oxygen, or an amine, andR is hydrogen or alkyl.These compounds can be prepared by a free radical catalyzed addition of a perfluoroalkyl iodide to a 5-norbornene diacid or its derivative. They are useful in preparing surfactants when reacted with an amine.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: March 13, 1979
    Assignee: Ciba-Geigy Corporation
    Inventor: Neal O. Brace
  • Patent number: 4082795
    Abstract: The compounds disclosed are of the formula ##STR1## and the anhydrides thereof wherein R.sub.f is a perfluoroalkyl group,R' is a divalent group of alkylene, ether, thioether or a sec.amine,Y is oxygen, sulfur or an amine, andR is hydrogen or alkyl.R.sup.3 is hydrogen or methylThese compounds can be prepared by a free radical catalyzed addition of a polyfluoroalkylthiol to a 5-norbornene diacid or its derivative. They are useful in preparing surfactants when reacted with an amine.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: April 4, 1978
    Assignee: Ciba-Geigy Corporation
    Inventor: Neal O. Brace
  • Patent number: 4082798
    Abstract: The compounds disclosed are of the formula ##STR1## and the anhydrides thereof WHEREINR.sub.f is a perfluoroalkyl group,R' is a divalent group of alkylene, ether, thioether or a sec.amine,Y is oxygen, sulfur or an amine, andR is hydrogen or alkyl.R.sup.3 is hydrogen or methylThese compounds can be prepared by a free radical catalyzed addition of a polyfluoroalkylthiol to a 5-norbornene diacid or its derivative. They are useful in preparing surfactants when reacted with an amine.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: April 4, 1978
    Assignee: Ciba-Geigy Corporation
    Inventor: Neal O. Brace
  • Patent number: 4076740
    Abstract: The compounds disclosed are of the formula ##STR1## and the anhydrides thereof WHEREINR.sub.f is a perfluoroalkyl group,R' is a divalent group of alkylene, ether, thioether or a sec.amine,Y is oxygen, sulfur or an amine, andR is hydrogen or alkyl.R.sup.3 is hydrogen or methylThese compounds can be prepared by a free radical catalyzed addition of a polyfluoroalkylthiol to a 5-norbornene diacid or its derivative. They are useful in preparing surfactants when reacted with an amine.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: February 28, 1978
    Assignee: Ciba-Geigy Corporation
    Inventor: Neal O. Brace
  • Patent number: 3989725
    Abstract: The compounds disclosed are of the formula ##SPC1##And the anhydrides thereofWhereinR.sub.f is a perfluoroalkyl group,R' is a divalent group of alkylene, ether, thioether or a sec.amine,Y is oxygen, or an amine, andR is hydrogen or alkyl.R.sup.3 is hydrogen or methylThese compounds can be prepared by a free radical catalyzed addition of a polyfluoroalkylthiol to a 5-norbornene diacid or its derivative. They are useful in preparing surfactants when reacted with an amine.
    Type: Grant
    Filed: August 29, 1975
    Date of Patent: November 2, 1976
    Assignee: Ciba-Geigy Corporation
    Inventor: Neal O. Brace