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
 C14
SKINS; HIDES; PELTS; LEATHER
 C14C
CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING (dyeing or bleaching of leather or furs D06)
 C14C 1/00
Chemical treatment prior to tanning
 C14C 1/02
·  Curing raw hides
 C14C 1/04
·  Soaking
 C14C 1/06
·  Facilitating unhairing, e.g. by painting, by liming
 C14C 1/08
·  Deliming; Bating; Pickling; Degreasing
 C14C 3/00
Tanning; Compositions for tanning
 C14C 3/02
·  Chemical tanning
 C14C 3/04
·  ·  Mineral tanning
 C14C 3/06
·  ·  ·  using chromium compounds
 C14C 3/08
·  ·  by organic agents
 C14C 3/10
·  ·  ·  Vegetable tanning
 C14C 3/12
·  ·  ·  ·  using purified or modified vegetable tanning agents
 C14C 3/14
·  ·  ·  Fat tanning; Oil tanning
 C14C 3/16
·  ·  ·  using aliphatic aldehydes
 C14C 3/18
·  ·  ·  using polycondensation products or precursors thereof
 C14C 3/20
·  ·  ·  ·  sulphonated
 C14C 3/22
·  ·  ·  using polymerisation products
 C14C 3/24
·  ·  ·  using lignin derivatives, e.g. sulphate liquor
 C14C 3/26
·  ·  ·  using other organic substances, containing halogen
 C14C 3/28
·  ·  Multi-step processes
 C14C 3/30
·  ·  using physical means combined with chemical means
 C14C 3/32
·  Recovering tanning agents from leather
 C14C 5/00
Degreasing leather
 C14C 7/00
Pasting processes (chemical part)
 C14C 9/00
Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
 C14C 9/02
·  using fatty or oily materials, e.g. fat liquoring
 C14C 9/04
·  Fixing tanning agents in the leather
 C14C 11/00
Surface finishing of leather
 C14C 13/00
Manufacture of special kinds of leather, e.g. vellum (chamois tanning C14C 3/14)
 C14C 13/02
·  Manufacture of technical leather
 C14C 15/00
Apparatus for chemical treatment or washing of hides, skins, or leather