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PCE
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DIFF Main Group
C09K 23/00

Use of substances as emulsifying, wetting, dispersing, or foam-producing agents

Introduced: January 2022

Of 28 combined children, 23 exist in both systems.

5 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2022.

Child Classifications

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  • C09K 23/002 CPC only CPC only
  • C09K 23/003 CPC only CPC only
  • C09K 23/005 CPC only CPC only
  • C09K 23/007 CPC only CPC only
  • C09K 23/02 Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/04 Sulfonates or sulfuric acid ester salts derived from polyhydric alcohols or amino alcohols or derivatives thereof (sulfated or sulfonated fatty oils C09K23/08) since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/06 Esters of higher fatty acids with hydroxyalkylated sulfonic acids or salts thereof since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/08 Sulfation or sulfonation products of fats, oils, waxes, or higher fatty acids or esters thereof with monovalent alcohols since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/10 Derivatives of low-molecular-weight sulfocarboxylic acids or sulfopolycarboxylic acids since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/12 Sulfonates of aromatic or alkylated aromatic compounds since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/14 Derivatives of phosphoric acid since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/16 Amines or polyamines since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/18 Quaternary ammonium compounds since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/20 Phosphonium and sulfonium compounds since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/26 Sulfonamides since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/28 Aminocarboxylic acids (proteins and protein hydrolysates C09K23/30) since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/30 Proteins; Protein hydrolysates since 2022 IPC+CPC Available in IPC and CPC
  • C09K 23/32 Heterocyclic compounds since 2022 IPC+CPC Available in IPC and CPC