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DIFF Subclass Not Allocatable
C08H

DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS (polysaccharides C08B; natural rubber C08C; natural resins or their derivatives C09F; bituminous materials C10)

Introduced: September 1968

Description

C08H covers chemical modifications and derivatives of naturally occurring macromolecules, including cellulose, starch, proteins, and polysaccharides obtained from plant or animal sources. This classification encompasses chemical reactions such as esterification, etherification, crosslinking, and substitution applied to natural polymers to alter their properties. Typical applications include modified cellulose products (acetates, ethers), chemically treated starches for industrial use, and protein-based materials with enhanced functionality. Adjacent classes C08B (polysaccharides) and C08G (synthetic macromolecular compounds) are distinguished by focusing on naturally derived starting materials rather than fully synthetic polymers or unmodified natural substances.

Title

Titles differ between systems:

IPC: DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS

CPC: DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS (polysaccharides C08B; natural rubber C08C; natural resins or their derivatives C09F; bituminous materials C10)

Full Title

Full titles differ between systems:

IPC:

DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS

CPC:

DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS (polysaccharides C08B; natural rubber C08C; natural resins or their derivatives C09F; bituminous materials C10)

Of 6 combined children, 4 exist in both systems.

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

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • C08H 3/00 Vulcanised oils, e.g. factice IPC+CPC Available in IPC and CPC
  • C08H 6/00 CPC only CPC only
  • C08H 7/00 Lignin; Modified lignin; High-molecular-weight products derived therefrom IPC only IPC only
  • C08H 8/00 Macromolecular compounds derived from lignocellulosic materials since 2010 IPC+CPC Available in IPC and CPC
  • C08H 99/00 Subject matter not provided for in other groups of this subclass since 2010 IPC+CPC Available in IPC and CPC