Patents Assigned to Alchemetal Corp.
  • Polymeric coating compositions, polymer coated substrates, and methods of making and using the same
    Patent number: 6482529
    Abstract: This invention relates to a coated substrate comprising (i) a substrate and (ii) a coating thereupon comprising a polymeric composition formed from (a) twenty-five to ninety-nine parts by weight of a poly(amide-imide) prepolymer; (b) one to twenty-five parts by weight of a trifunctional ester selected from the group consisting of trifunctional methacrylate ester, trifunctional acrylate ester, and mixtures thereof; (c) from 0.5 to fifteen parts by weight of an organo-reactive silane consisting of an amino group containing alkoxysilane having the formula NH2(CH2)nSi(OC2H5)3 where n is an integer from one to twenty; and (d) a conductive additive.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: November 19, 2002
    Assignee: Alchemetal Corp.
    Inventors: Mohan L. Sanduja, Carl Horowitz, Paul Thottathil, Lina Zilberman, Edward Greenwood
  • Polymeric coating compositions, polymer coated substrates,and methods of making and using the same
    Publication number: 20020040082
    Abstract: This invention relates to a coated substrate comprising (i) a substrate and (ii) a coating thereupon comprising a polymeric composition formed from (a) twenty-five to ninety-nine parts by weight of a poly(amide-imide) prepolymer; (b) one to twenty-five parts by weight of a trifunctional ester selected from the group consisting of trifunctional methacrylate ester, trifunctional acrylate ester, and mixtures thereof; (c) from 0.5 to fifteen parts by weight of an organo-reactive silane consisting of an amino group containing alkoxysilane having the formula NH2(CH2)nSi(OC2H5)3 where n is an integer from one to twenty; and (d) a conductive additive.
    Type: Application
    Filed: May 4, 2001
    Publication date: April 4, 2002
    Applicant: ALCHEMETAL CORP.
    Inventors: Mohan L. Sanduja, Carl Horowitz, Paul Thottathil, Lina Zilberman, Edward Greenwood
  • Polymeric coating compositions, polymer coated substrates, and methods of making and using the same
    Patent number: 6281275
    Abstract: The invention is in a conductive prepolymer composition which when polymerized and cured is used to coat a substrate material such as steel, stainless steel, iron, brass, copper, aluminum, platinum, titanium, silver, gold, Telfon, plastics, glass, or combinations thereof. It comprises: (a) from 25 to 99 parts by weight of a poly(amide-imide) prepolymer; (b) from 1 to 25 parts by weight of a trifunctional ester selected from the group consisting of trifunctional methacrylate ester, trifunctional acrylate ester, and mixtures thereof; (c) from 0.5 to 15 parts by weight of an organo-reactive silane consisting of an amino group containing alkoxysilane having the formula NH2(CH2)nSi(OC2H5)3, where n is an integer from 1 to 20; and (d) a conductive additive. The invention also provides polymer coated substrates having a tenaciously bound polymer layer which is corrosion resistant, has advantageous properties of conductivity and can be soldered.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: August 28, 2001
    Assignee: Alchemetal Corp.
    Inventors: Mohan L. Sanduja, Carl Horowitz, Paul Thottathil, Lina Zilberman, Edward Greenwood