3211554

Information

• Patent Grant
• 3211554

• References
• Source

• Patent Number

  3,211,554

• Date Filed

  Not available

• Date Issued

  Tuesday, October 12, 1965
  59 years ago

• CPC

  • G03C7/29 - Azo dyes therefor
  • C09B35/26 - the tetrazo component being a derivative of a diaryl urea
  • C09B35/28 - the tetrazo component containing two aryl nuclei linked by at least one of the groups -CON<, -SO2N<, -SO2-, or -SO2-O-
  • C09B39/00 - Other azo dyes prepared by diazotising and coupling
  • C09B43/12 - by acylation of amino groups
  • C09B43/124 - with monocarboxylic acids, carbamic esters of halides, mono- isocyanates, or haloformic acid esters
  • C09B43/136 - with polyfunctional acylating agents
  • C09B43/155 - with di- or poly-isocyanates

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof
  • 534 - Organic compounds