DIFF Subgroup
C08L 23/20 having four to nine carbon atoms
Introduced: July 1974
Full Title
Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers > not modified by chemical after-treatment > Homopolymers or copolymers of hydrocarbons having four or more carbon atoms > having four to nine carbon atoms
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1974.
Child Classifications
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- C08L 23/22 Copolymers of isobutene; Butyl rubber; Homopolymers or copolymers of other iso-olefins since 1974 IPC+CPC Available in IPC and CPC