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PCE
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DIFF Subgroup
C08J 9/12

by a physical blowing agent

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 > using blowing gases generated by a previously added blowing agent > by a physical blowing agent

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) > using blowing gases generated by a previously added blowing agent > by a physical blowing agent

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

IPC defines codes here since 1974.

Child Classifications

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