C
SECTION C — CHEMISTRY; METALLURGY
 C

Note(s)

In section C, the definitions of groups of chemical elements are as follows:

  • Alkali metals: Li, Na, K, Rb, Cs, Fr
  • Alkaline earth metals: Ca, Sr, Ba, Ra
  • Lanthanides: elements with atomic numbers 57 to 71 inclusive
  • Rare earths: Sc, Y, Lanthanides
  • Actinides: elements with atomic numbers 89 to 103 inclusive
  • Refractory metals: Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
  • Halogens: F, Cl, Br, I, At
  • Noble gases: He, Ne, Ar, Kr, Xe, Rn
  • Platinum group: Os, Ir, Pt, Ru, Rh, Pd
  • Noble metals: Ag, Au, Platinum group
  • Light metals: alkali metals, alkaline earth metals, Be, Al, Mg
  • Heavy metals: metals other than light metals
  • Iron group: Fe, Co, Ni
  • Non-metals: H, B, C, Si, N, P, O, S, Se, Te, noble gases, halogens
  • Metals: elements other than non-metals
  • Transition elements: elements with atomic numbers 21 to 30 inclusive, 39 to 48 inclusive, 57 to 80 inclusive, 89 upwards

  
CHEMISTRY
 C08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON (manufacture or treatment of artificial threads, fibres, bristles or ribbons D01)
 C08C
TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
 C08C

Note(s)

This subclass covers:

 C08C 1/00 - 
C08C 19/00
Preparation
 C08C 1/00
Treatment of rubber latex
 C08C 1/02
·  Chemical or physical treatment of rubber latex before or during concentration
 C08C 1/04
·  ·  Purifying; Deproteinising
 C08C 1/06
·  ·  Preservation of rubber latex (preserving ingredients C08K)
 C08C 1/065
·  ·  Increasing the size of dispersed rubber particles  [2]
 C08C 1/07
·  ·  ·  characterised by the agglomerating agents used  [2]
 C08C 1/075
·  ·  Concentrating  [2]
 C08C 1/08
·  ·  ·  with the aid of creaming agents  [2]
 C08C 1/10
·  ·  ·  by centrifugation  [2]
 C08C 1/12
·  ·  ·  by evaporation  [2]
 C08C 1/14
·  Coagulation
 C08C 1/15
·  ·  characterised by the coagulants used  [2]
 C08C 1/16
·  ·  in floc form
 C08C 2/00
Treatment of rubber solutions  [2]
 C08C 2/02
·  Purification  [2]
 C08C 2/04
·  ·  Removal of catalyst residues  [2]
 C08C 2/06
·  Winning of rubber from solutions  [2]
 C08C 3/00
Treatment of coagulated rubber
 C08C 3/02
·  Purification  [2]
 C08C 4/00
Treatment of rubber before vulcanisation, not provided for in groups C08C 1/00-C08C 3/02  [2]
 C08C 19/00
Chemical modification of rubber (crosslinking agents, other than provided for by group C08C 19/30, C08K)  [2]
 C08C 19/00

Note(s)

In this group, in the absence of an indication to the contrary, a process is classified in the last appropriate place. [2]

 C08C 19/02
·  Hydrogenation  [2]
 C08C 19/04
·  Oxidation  [2]
 C08C 19/06
·  ·  Epoxidation  [2]
 C08C 19/08
·  Depolymerisation  [2]
 C08C 19/10
·  Isomerisation; Cyclisation  [2]
 C08C 19/12
·  Incorporating halogen atoms into the molecule  [2]
 C08C 19/14
·  ·  by reaction with halogens  [2]
 C08C 19/16
·  ·  by reaction with hydrogen halides  [2]
 C08C 19/18
·  ·  by reaction with hydrocarbons substituted by halogen  [2]
 C08C 19/20
·  Incorporating sulphur atoms into the molecule  [2]
 C08C 19/22
·  Incorporating nitrogen atoms into the molecule  [2]
 C08C 19/24
·  Incorporating phosphorus atoms into the molecule  [2]
 C08C 19/26
·  Incorporating metal atoms into the molecule  [2]
 C08C 19/28
·  Reaction with compounds containing carbon-to-carbon unsaturated bonds (graft polymers C08F)  [2]
 C08C 19/30
·  Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule  [2]
 C08C 19/32
·  ·  reacting with halogens or halogen-containing groups  [2]
 C08C 19/34
·  ·  reacting with oxygen or oxygen-containing groups  [2]
 C08C 19/36
·  ·  ·  with carboxy radicals  [2]
 C08C 19/38
·  ·  ·  with hydroxy radicals  [2]
 C08C 19/40
·  ·  ·  with epoxy radicals  [2]
 C08C 19/42
·  ·  reacting with metals or metal-containing groups  [2]
 C08C 19/44
·  ·  ·  of polymers containing metal atoms exclusively at one or both ends of the skeleton  [2]