|  | C |
SECTION C — CHEMISTRY AND METALLURGY

|  | C |
Note(s) Definitions for Section C: 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 AND LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING (dyeing and bleaching of leather or furs Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...C14C 3/14)

|  | C14C 13/02 |
· | Manufacture of technical leather

|  | C14C 15/00 |
Apparatus for chemical treatment or washing of hides, skins, or leather