|
|
| SECTION C– CHEMISTRY; METALLURGY |
|
| C 08 | ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON (manufacture or treatment of artificial threads, fibres, bristles or ribbons D 01) |
|
| C 08 C | TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS |
|
| Note |
|
| This subclass covers: |
|
| – | processes directed to natural rubber or to conjugated diene rubbers (synthesis thereof C 08 F); [2] |
|
| – | processes directed to rubbers in general (to a specific rubber, other than provided for above, C 08 F to C 08 H). [2] |
|
| Preparation |
|
1/ | 00 | Treatment of rubber latex |
|
1/ | 02 | . | Chemical or physical treatment of rubber latex before or during concentration |
|
1/ | 04 | . | . | Purifying; Deproteinising |
|
1/ | 06 | . | . | Preservation of rubber latex (preserving ingredients C 08 K) |
|
1/ | 065 | . | . | Increasing the size of dispersed rubber particles [2] |
|
1/ | 07 | . | . | . | characterised by the agglomerating agents used [2] |
|
1/ | 075 | . | . | Concentrating [2] |
|
1/ | 08 | . | . | . | with the aid of creaming agents [2] |
|
1/ | 10 | . | . | . | by centrifugation [2] |
|
1/ | 12 | . | . | . | by evaporation [2] |
|
1/ | 14 | . | Coagulation |
|
1/ | 15 | . | . | characterised by the coagulants used [2] |
|
1/ | 16 | . | . | in floc form |
|
2/ | 00 | Treatment of rubber solutions [2] |
|
2/ | 02 | . | Purification [2] |
|
2/ | 04 | . | . | Removal of catalyst residues [2] |
|
2/ | 06 | . | Winning of rubber from solutions [2] |
|
3/ | 00 | Treatment of coagulated rubber |
|
3/ | 02 | . | Purification [2] |
|
4/ | 00 | Treatment of rubber before vulcanisation, not provided for in groups C 08 C 1/00 to C 08 C 3/02 [2] |
|
19/ | 00 | Chemical modification of rubber (crosslinking agents, other than provided for by group C 08 C 19/30, C 08 K) |
|
| Note |
|
| In this group, in the absence of an indication to the contrary, a process is classified in the last appropriate place. [2] |
|
19/ | 02 | . | Hydrogenation [2] |
|
19/ | 04 | . | Oxidation [2] |
|
19/ | 06 | . | . | Epoxidation [2] |
|
19/ | 08 | . | Depolymerisation [2] |
|
19/ | 10 | . | Isomerisation; Cyclisation [2] |
|
19/ | 12 | . | Incorporating halogen atoms into the molecule [2] |
|
19/ | 14 | . | . | by reaction with halogens [2] |
|
19/ | 16 | . | . | by reaction with hydrogen halides [2] |
|
19/ | 18 | . | . | by reaction with hydrocarbons substituted by halogen [2] |
|
19/ | 20 | . | Incorporating sulfur atoms into the molecule [2] |
|
19/ | 22 | . | Incorporating nitrogen atoms into the molecule [2] |
|
19/ | 24 | . | Incorporating phosphorus atoms into the molecule [2] |
|
19/ | 25 | . | Incorporating silicon atoms into the molecule [5] |
|
19/ | 26 | . | Incorporating metal atoms into the molecule [2] |
|
19/ | 28 | . | Reaction with compounds containing carbon-to-carbon unsaturated bonds (graft polymers C 08 F) [2] |
|
19/ | 30 | . | Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule [2] |
|
19/ | 32 | . | . | reacting with halogens or halogen-containing groups [2] |
|
19/ | 34 | . | . | reacting with oxygen or oxygen-containing groups [2] |
|
19/ | 36 | . | . | . | with carboxy radicals [2] |
|
19/ | 38 | . | . | . | with hydroxy radicals [2] |
|
19/ | 40 | . | . | . | with epoxy radicals [2] |
|
19/ | 42 | . | . | reacting with metals or metal-containing groups [2] |
|
19/ | 44 | . | . | . | of polymers containing metal atoms exclusively at one or both ends of the skeleton [2] |
|
 |