WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

C08C　TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS

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

C08C 1/07 ・・・characterised by the agglomerating agents used

C08C 1/075 ・・Concentrating

C08C 1/08 ・・・with the aid of creaming agents

C08C 1/10 ・・・by centrifugation

C08C 1/12 ・・・by evaporation

C08C 1/14 ・Coagulation

C08C 1/145 ・・{Heat-sensitising agents}

C08C 1/15 ・・characterised by the coagulants used

C08C 2/00 Treatment of rubber solutions

C08C 2/02 ・Purification

C08C 2/04 ・・Removal of catalyst residues

C08C 2/06 ・Wining of rubber from solutions

C08C 3/00 Treatment of coagulated rubber

C08C 3/02 ・Purification

C08C 4/00 Treatment of rubber before vulcanisation, not provided for in groups C08C 1/00 to C08C 3/02

C08C 19/00 Chemical modification of rubber (crosslinking agents, other than provided for by C08C 19/30, C08K)

C08C 19/02 ・Hydrogenation

C08C 19/04 ・Oxidation

C08C 19/06 ・・Epoxidation

C08C 19/08 ・Depolymerisation

C08C 19/10 ・Isomerisation; Cyclisation

C08C 19/12 ・Incorporating halogen atoms into the molecule

C08C 19/14 ・・by reaction with halogens

C08C 19/16 ・・by reaction with hydrogen halides

C08C 19/18 ・・by reaction with hydrocarbons substituted by halogen

C08C 19/20 ・Incorporating sulfur atoms into the molecule

C08C 19/22 ・Incorporating nitrogen atoms into the molecule

C08C 19/24 ・Incorporating phosphorus atoms into the molecule

C08C 19/25 ・Incorporating silicon atoms into the molecule

C08C 19/26 ・Incorporating metal atoms into the molecule

C08C 19/28 ・Reaction with compounds containing carbon-to-carbon unsaturated bonds (graft polymers C08F)

C08C 19/30 ・Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule

C08C 19/32 ・・reacting with halogens or halogen-containing groups

C08C 19/34 ・・reacting with oxygen or oxygen-containing groups

C08C 19/36 ・・・with carboxy radicals

C08C 19/38 ・・・with hydroxy radicals

C08C 19/40 ・・・with epoxy radicals

C08C 19/42 ・・reacting with metals or metal-containing groups

C08C 19/44 ・・・of polymers containing metal atoms exclusively at one or both ends of the skeleton

C08C 2019/00 Chemical modification of rubber (crosslinking agents, other than provided for by C08C 19/30, C08K)

C08C 2019/09 ・Metathese