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PCE
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DIFF Subgroup
C08J 9/16

Making expandable particles

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof > Making expandable particles

CPC:

Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof (mechanical aspects of shaping of plastics or substances in a plastic state for the production of porous or cellular articles B29C) > Making expandable particles

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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  • C08J 9/18 by impregnating polymer particles with the blowing agent since 1974 IPC+CPC Available in IPC and CPC
  • C08J 9/20 by suspension polymerisation in the presence of the blowing agent since 1974 IPC+CPC Available in IPC and CPC