Patents by Inventor Cu C. Trinh

Cu C. Trinh 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).

  • Method of preparing a vulcanizing compound and utilization thereof in binders for road-making
    Patent number: 5104916
    Abstract: A vulcanization composition for elastomers, the compostion comprising, by weight: 0.5 parts to 3 parts mercaptobenzothiazole, 0.5 parts to 3 parts tetramethylthiuram disulfide, 3 parts to 5 parts zinc oxide, 1 part to 3 parts stearic acid, 1 part to 4 parts anti-oxidant, and 1 part to 5 parts vulcanization agent constituted by 0% to 100% sublimated sulfur, 0% to 75% sulfur donor selected from thiurams and dithiomorpholines, and 0% to 50% sulfenamide, with the weight ratio of sulfenamide to sulfur donor lying in the range 1/3 to 1. The invention is applicable to vulcanizing a three-sequence copolymer of styrene-butadiene-styrene mixed with bitumen.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: April 14, 1992
    Assignee: Societe Anonyme d'Application des Derives de l'Asphalte-S.A.A.D.A.
    Inventors: Cu C. Trinh, Denis Million
  • Binders for road-making comprising benzothiazole compounds and dithiomorpholine
    Patent number: 5078905
    Abstract: A vulcanization composition for elastomers, the composition comprising, by weight: 0.5 parts to 3 parts mercaptobenzothiazole, 0.5 parts to 3 parts tetramethylthiuram disulfide, 3 parts to 5 parts zinc oxide, 1 part to 3 parts stearic acid, 1 part to 4 parts anti-oxidant, and 1 part to 5 parts vulcanization agent constituted by 0% to 100% sublimated sulfur, 0% to 75% sulfur donor selected from thiurams and dithiomorpholines, and 0% to 50% sulfenamide, with the weight ratio of sulfenamide to sulfur donor lying in the range 1/3 to 1. The invention is applicable to vulcanizing a three-sequence copolymer of styrene-butadiene-styrene mixed with bitumen.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: January 7, 1992
    Assignee: Societe Anonyme d'Application des Derives de l'Asphalte
    Inventors: Cu C. Trinh, Denis Million