Patents Assigned to Allied Industrial Corp., Ltd.
  • Method for making 8-hydroxyjulolidine compound
    Patent number: 6433176
    Abstract: An 8-hydroxyjulolidine compound, having the formula: (wherein R1 and R2 represent independently H, halogen, hydroxyl or alkyl) is prepared by the following chemical reaction: wherein X and Y represent independently halogen, acyloxyl, sulfonyloxyl or phosphoryloxyl and R1 and R2 are as defined above.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: August 13, 2002
    Assignee: Allied Industrial Corp., Ltd.
    Inventors: Chao-Tsen Chen, Shao-Tzu Tang, Ling Lu, Jim-Min Fang
  • 2-amino-5-nitrothiazole derived monoazo disperse dyes
    Patent number: 5652344
    Abstract: 2-amino-5-nitrothiazole derived compounds having the following formula: ##STR1## Wherein R1=H or alkyl of 1-4 carbons, R2=alkyl of 1-4 carbons or allyl group and R3=H, halogen or alkyl of 1-4 carbons.The invented compounds are suited for disperse dyestuffs and are able to dye polyester and cellulose acetate fibers with excellent build-up, exhaustion and sublimation fastness. The invention also provides a process for the preparation of the new compounds.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: July 29, 1997
    Assignee: Allied Industrial Corp., Ltd.
    Inventors: Hsien-Chyang Tsien, Kuan-Po Chu, Hung Chang
  • Disazo acid dyestuffs for polyamide fibers applicable in neutral solution
    Patent number: 5527887
    Abstract: Disazo acid dyestuff with the following general formula: ##STR1## wherein R represents H, C.sub.n H.sub.2n+1 wherein n is a natural number between 1 and 4, or (CH.sub.2).sub.m OR' wherein m is a natural number between 1 and 4 and R' represents C.sub.p H.sub.2p+1 wherein p is an integral number between 0 and 4; wherein R" represents H, CN or COOR wherein R has the same definition as above. The sulfo group may be at any position of the benzene ring.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: June 18, 1996
    Assignee: Allied Industrial Corp., Ltd.
    Inventors: Hsien-Chyang Tsien, Chen-Kung Chi, Hung Chang