Patent Classification Explorer PCE

DIFF Subgroup

C09B 29/10

from coupling components containing hydroxy as the only directing group

Introduced: September 1968

Full Title

Monoazo dyes prepared by diazotising and coupling > from coupling components containing hydroxy as the only directing group

Of 5 combined children, 3 exist in both systems.

1 codes are CPC-only extensions, 1 exist only in IPC.

Child Classifications

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C09B 29/103 +1 CPC CPC only CPC only
C09B 29/12 of the benzene series IPC+CPC Available in IPC and CPC
C09B 29/15 of the naphthalene series since 1980 IPC only IPC only
C09B 29/16 Naphthol-sulfonic acids IPC+CPC Available in IPC and CPC
C09B 29/18 ortho-Hydroxy carbonamides IPC+CPC Available in IPC and CPC