Patents by Inventor Sien L. Ong

Sien L. Ong 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).

  • Process for the production of reserve effects on polyestercellulose mixed fiber textiles
    Patent number: 4322213
    Abstract: Printed textiles and a process for production of resist effects on textile materials of mixed fibers of polyester and cellulose comprising impregnating the materials with a dye liquor containing dischargeable disperse dyestuffs and dischargeable reactive dyestuffs which react with the resisting agents, drying or partially drying the materials and subsequently printing a resist paste on the materials, and heat-treating the materials at temperatures of 100.degree. to 190.degree. C.,the improvement comprises said dischargeable disperse dyestuffs are of the formula ##STR1## p0 wherein n is a number of 1 to 9; said dischargeable reactive dyestuffs being those containing reactive moieties of the formula--SO.sub.2 --CH.sub.2 --CH.sub.2 --hal,--SO.sub.2 --CH.sub.2 --CH.sub.2 --O--SO.sub.3 M,--NH--SO.sub.2 --CH.sub.2 --CH.sub.2 --O--SO.sub.3 M or--SO.sub.2 --CH.dbd.CH.sub.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: March 30, 1982
    Assignee: Cassella Aktiengesellschaft
    Inventors: Horst Tappe, Horst Kindler, Kurt Roth, Sien L. Ong