Patents by Inventor Giuliana C. Tesoro

Giuliana C. Tesoro 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: 5260411
    Abstract: A method for the preparation of a polyimide containing reversible crosslinks comprising the step of curing a monomer having the formula ##STR1## wherein R and R' may be the same or different and each is H or lower alkyl having 1-5 carbon atoms under conditions conducive to the formation of a polyimide and thereby forming a polyimide having the formula ##STR2## R and R' are as defined above and n is an integer from 10 to 100. The polyimide may be converted to a soluble polymer by cleaving the disulfide bond in the presence of a solvent and a reducing agent. The reduced polymer may be reformed into the polymer in an oxidation step or into a modified polyimide in other reaction steps. Copolymerization processes are also disclosed.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: November 9, 1993
    Assignee: Polytechnic University
    Inventors: Giuliana C. Tesoro, Vinod R. Sastri
  • Patent number: 4882399
    Abstract: A method for the preparation of insoluble, infusible epoxy resins containing reversible crosslinks comprising the steps of:(a) forming a reaction mixture of(i) an epoxy compound having two or more epoxy groups, and(ii) a crosslinking agent containing two or more epoxy-reactive groups and further containing a disulfide bond, said crosslinking agent being selected from compounds having the formulaQ--X--S--S--X--Qwhere Q is an epoxy-reactive functional group selected from ##STR1## and X is a divalent aromatic or aliphatic hydrocarbon radical of one to ten carbon atoms, and(b) curing said reaction mixture under conditions conductive to the formation of a crosslinked resin.The epoxy resin can be solubilized by cleavage of the disulfide bond by reduction in the presence of a solvent. The resultant thiol groups can be reoxidized to form the disulfide linkages or can be modified by other reactions.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: November 21, 1989
    Assignee: Polytechnic University
    Inventors: Giuliana C. Tesoro, Vinod R. Sastri
  • Patent number: 4778727
    Abstract: An adhesion promoter for polyimide is provided having the formula: ##STR1## wherein A is ##STR2## Ar is an aromatic group, R.sup.1 is lower alkyl, R.sup.11 is OR.sup.1 or lower alkyl, R.sup.111 is hydrogen or lower alkyl.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: October 18, 1988
    Assignee: Massachusetts Institute of Technology
    Inventors: Giuliana C. Tesoro, Donald R. Uhlmann, Giovindasamy P. Rajendran, Chan E. Park
  • Patent number: 4656235
    Abstract: Siloxane-containing polyimides, useful as conformal coatings for electrical devices, can be synthesized via a novel Diels-Alder reaction in which bis-maleimide derivatives are polymerized with siloxane-containing bis-furan derivatives. The Diels-Alder adduct can be aromatized, and applied as a coating to a mineral substrate. The aromatized, polyimide coating can be cured thermally without additional cyclization on the substrate.
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: April 7, 1987
    Assignee: Polytechnic Institute of New York
    Inventors: Giuliana C. Tesoro, Vinod R. Sastri, Subash C. Narang
  • Patent number: 4111652
    Abstract: Mixtures of chloromethyl phosphonic diamide (CMPDA) and methyl phosphonic diamide (MPDA) have synergistic flame retardant efficiency on cellulose-containing textile substrates.
    Type: Grant
    Filed: March 29, 1977
    Date of Patent: September 5, 1978
    Assignee: Ethyl Corporation
    Inventor: Giuliana C. Tesoro
  • Patent number: 4092108
    Abstract: Flame resistance is imparted to cellulosic textiles by the application of compositions prepared by reacting phosphonic acid derivatives with ammonia or appropriate amine compounds. Textile compositions thusly obtained exhibit levels of flame resistance which remain essentially unchanged after 50 or more launderings. A comparison of textiles containing the instant compositions to textiles containing prior art flame retardants using verticle flammability tests, reveals that flame resistant textiles of the invention required one half or less of the amount of added compositions to pass the test as did prior art textiles.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: May 30, 1978
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Emery I. Valko, deceased, Giuliana C. Tesoro, Walter F. Olds