3627751

Information

• Patent Grant
• 3627751

• References
• Source

• Patent Number

  3,627,751

• Date Filed

  Not available

• Date Issued

  Tuesday, December 14, 1971
  52 years ago

• CPC

  • C09B43/40 - by substituting hetero atoms by radicals containing other hetero atoms
  • C09B1/002 - containing onium groups
  • C09B1/26 - Dyes with amino groups substituted by hydrocarbon radicals
  • C09B1/28 - substituted by alkyl, aralkyl or cyclo alkyl groups
  • C09B1/32 - substituted by aryl groups
  • C09B1/50 - Amino-hydroxy-anthraquinones Ethers and esters thereof
  • C09B23/143 - the ethylene chain carrying a COOH or a functionally modified derivative, e.g.-CN, -COR, -COOR, -CON=, C6H5-CH=C-CN
  • C09B43/00 - Preparation of azo dyes from other azo compounds
  • C09B44/02 - containing ammonium groups not directly attached to an azo group
  • C09B69/001 - Dyes containing an onium group attached to the dye skeleton via a bridge

• US Classifications

  • 534 - Organic compounds
  • 548 - Organic compounds
  • 552 - Organic compounds
  • 560 - Organic compounds
  • 564 - Organic compounds