IPC Classification

Class code (prefix) Descriptions Number of results
C09K 3/00 Materials not provided for elsewhere
C09K 3/10 Materials not provided for elsewhere for sealing or packing joints or covers
C09K 3/12 Materials not provided for elsewhere for stopping leaks, e.g. in radiators or in tanks
C09K 3/14 Anti-slip materials; Abrasives
C09K 3/16 Anti-static materials
C09K 3/18 Materials not provided for elsewhere for application to surface to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
C09K 3/20 Materials not provided for elsewhere as substitutes for glycerol in its non-chemical uses, e.g. as a base in toiletry creams or ointments
C09K 3/22 Materials not provided for elsewhere for dust-laying or dust-absorbing
C09K 3/24 Materials not provided for elsewhere for simulating ice or snow
C09K 3/30 Materials not provided for elsewhere for aerosols
C09K 3/32 Materials not provided for elsewhere for treating liquid pollutants, e.g. oil, gasoline or fat
C09K 5/00 Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
C09K 5/02 Materials undergoing a change of physical state when used
C09K 5/04 Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice-versa
C09K 5/06 Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice-versa
C09K 5/08 Materials not undergoing a change of physical state when used
C09K 5/10 Liquid materials
C09K 5/12 Molten materials, i.e. materials solid at room temperature, e.g. metals or salts
C09K 5/14 Solid materials, e.g. powdery or granular
C09K 5/16 Materials undergoing chemical reactions when used
C09K 5/18 Non-reversible chemical reactions
C09K 5/20 Antifreeze additives therefor, e.g. for radiator liquids
C09K 8/00 Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
C09K 8/02 Well-drilling compositions
C09K 8/03 Specific additives for general use in well-drilling compositions
C09K 8/04 Aqueous well-drilling compositions
C09K 8/05 Aqueous well-drilling compositions containing inorganic compounds only, e.g. mixtures of clay and salt
C09K 8/06 Clay-free compositions
C09K 8/08 Clay-free compositions containing natural organic compounds, e.g. polysaccharides, or derivatives thereof
C09K 8/10 Cellulose or derivatives thereof
C09K 8/12 Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
C09K 8/14 Clay-containing compositions
C09K 8/16 Clay-containing compositions characterised by the inorganic compounds other than clay
C09K 8/18 Clay-containing compositions characterised by the organic compounds
C09K 8/20 Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
C09K 8/22 Synthetic organic compounds
C09K 8/24 Polymers
C09K 8/26 Oil-in-water emulsions
C09K 8/28 Oil-in-water emulsions containing organic additives
C09K 8/32 Non-aqueous well-drilling compositions, e.g. oil-based
C09K 8/34 Organic liquids
C09K 8/035 Organic additives
C09K 8/36 Water-in-oil emulsions
C09K 8/38 Gaseous or foamed well-drilling compositions
C09K 8/40 Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses
C09K 8/42 Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
C09K 8/44 Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
C09K 8/46 Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
C09K 8/48 Density increasing or weighting additives
C09K 8/50 Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
C09K 8/52 Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
C09K 8/54 Compositions for in situ inhibition of corrosion in boreholes or wells
C09K 8/56 Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
C09K 8/57 Compositions based on water or polar solvents
C09K 8/58 Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
C09K 8/60 Compositions for stimulating production by acting on the underground formation
C09K 8/62 Compositions for forming crevices or fractures
C09K 8/64 Oil-based compositions
C09K 8/66 Compositions based on water or polar solvents
C09K 8/68 Compositions based on water or polar solvents containing organic compounds
C09K 8/70 Compositions for forming crevices or fractures characterised by their form or by the form of their components, e.g. foams
C09K 8/72 Eroding chemicals, e.g. acids
C09K 8/74 Eroding chemicals, e.g. acids combined with additives added for specific purposes
C09K 8/76 Eroding chemicals, e.g. acids combined with additives added for specific purposes for preventing or reducing fluid loss
C09K 8/78 Eroding chemicals, e.g. acids combined with additives added for specific purposes for preventing sealing
C09K 8/80 Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
C09K 8/82 Oil-based compositions
C09K 8/84 Compositions based on water or polar solvents
C09K 8/86 Compositions based on water or polar solvents containing organic compounds
C09K 8/88 Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/90 Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
C09K 8/92 Compositions for stimulating production by acting on the underground formation characterised by their form or by the form of their components, e.g. encapsulated material
C09K 8/94 Foams
C09K 8/467 Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
C09K 8/473 Density reducing additives, e.g. for obtaining foamed cement compositions
C09K 8/487 Fluid loss control additives; Additives for reducing or preventing circulation loss
C09K 8/493 Additives for reducing or preventing gas migration
C09K 8/502 Oil-based compositions
C09K 8/504 Compositions based on water or polar solvents
C09K 8/506 Compositions based on water or polar solvents containing organic compounds
C09K 8/508 Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/512 Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
C09K 8/514 Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
C09K 8/516 Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
C09K 8/518 Foams
C09K 8/524 Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
C09K 8/528 Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 8/532 Sulfur
C09K 8/536 Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning characterised by their form or by the form of their components, e.g. encapsulated material
C09K 8/565 Oil-based compositions
C09K 8/575 Compositions based on water or polar solvents containing organic compounds
C09K 8/582 Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of bacteria
C09K 8/584 Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
C09K 8/588 Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
C09K 8/592 Compositions used in combination with generated heat, e.g. by steam injection
C09K 8/594 Compositions used in combination with injected gas
C09K 9/00 Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
C09K 9/02 Organic tenebrescent materials
C09K 11/00 Luminescent, e.g. electroluminescent, chemiluminescent, materials
C09K 11/01 Recovery of luminescent materials
C09K 11/02 Use of particular materials as binders, particle coatings or suspension media therefor
C09K 11/04 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing natural or artificial radioactive elements or unspecified radioactive elements
C09K 11/06 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing organic luminescent materials
C09K 11/07 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing organic luminescent materials having chemically-interreactive components, e.g. reactive chemiluminescent compositions
C09K 11/08 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials
C09K 11/54 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing zinc or cadmium
C09K 11/55 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing beryllium, magnesium, alkali metals or alkaline earth metals
C09K 11/56 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing sulfur
C09K 11/57 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing manganese or rhenium
C09K 11/58 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing copper, silver or gold
C09K 11/59 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing silicon
C09K 11/60 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing iron, cobalt or nickel
C09K 11/61 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
C09K 11/62 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing gallium, indium or thallium
C09K 11/63 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing boron
C09K 11/64 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing aluminium
C09K 11/65 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing carbon
C09K 11/66 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing germanium, tin or lead
C09K 11/67 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing refractory metals
C09K 11/68 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing refractory metals containing chromium, molybdenum or tungsten
C09K 11/69 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing refractory metals containing vanadium
C09K 11/70 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing phosphorus
C09K 11/71 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing phosphorus also containing alkaline earth metals
C09K 11/72 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing phosphorus also containing halogen, e.g. halophosphates
C09K 11/73 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing phosphorus also containing halogen, e.g. halophosphates also containing alkaline earth metals
C09K 11/74 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
C09K 11/75 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing arsenic, antimony or bismuth containing antimony
C09K 11/76 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing arsenic, antimony or bismuth containing antimony also containing phosphorus and halogen, e.g. halophosphates
C09K 11/77 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals
C09K 11/78 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing oxygen
C09K 11/79 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing silicon
C09K 11/80 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing aluminium or gallium
C09K 11/81 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing phosphorus
C09K 11/82 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing vanadium
C09K 11/83 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing vanadium and phosphorus
C09K 11/84 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing sulfur, e.g. oxysulfides
C09K 11/85 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing halogen
C09K 11/86 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing oxygen and halogen, e.g. oxyhalides
C09K 11/87 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing platinum group metals
C09K 11/88 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
C09K 11/89 Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing mercury
C09K 13/00 Etching, surface-brightening or pickling compositions
C09K 13/02 Etching, surface-brightening or pickling compositions containing an alkali metal hydroxide
C09K 13/04 Etching, surface-brightening or pickling compositions containing an inorganic acid
C09K 13/06 Etching, surface-brightening or pickling compositions containing an inorganic acid with organic material
C09K 13/08 Etching, surface-brightening or pickling compositions containing an inorganic acid containing a fluorine compound
C09K 13/10 Etching, surface-brightening or pickling compositions containing an inorganic acid containing a boron compound
C09K 13/12 Etching, surface-brightening or pickling compositions containing heavy metal salts in an amount of at least 50% of the non-solvent components
C09K 15/00 Anti-oxidant compositions; Compositions inhibiting chemical change
C09K 15/02 Anti-oxidant compositions; Compositions inhibiting chemical change containing inorganic compounds
C09K 15/04 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
C09K 15/06 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing oxygen
C09K 15/08 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing oxygen containing a phenol or quinone moiety
C09K 15/10 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing sulfur
C09K 15/12 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing sulfur and oxygen
C09K 15/14 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing sulfur and oxygen containing a phenol or quinone moiety
C09K 15/16 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen
C09K 15/18 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen containing an amine or imine moiety
C09K 15/20 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen and oxygen
C09K 15/22 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen and oxygen containing an amide or imide moiety
C09K 15/24 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen and oxygen containing a phenol or quinone moiety
C09K 15/26 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen and sulfur
C09K 15/28 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen, oxygen and sulfur
C09K 15/30 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing heterocyclic ring with at least one nitrogen atom as ring member
C09K 15/32 Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing boron, silicon, phosphorus, selenium, tellurium or a metal
C09K 15/34 Anti-oxidant compositions; Compositions inhibiting chemical change containing plant or animal materials of unknown composition
C09K 17/00 Soil-conditioning materials or soil-stabilising materials
C09K 17/02 Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
C09K 17/04 Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
C09K 17/06 Calcium compounds, e.g. lime
C09K 17/08 Aluminium compounds, e.g. aluminium hydroxide
C09K 17/10 Cements, e.g. Portland cement
C09K 17/12 Water-soluble silicates, e.g. waterglass
C09K 17/14 Soil-conditioning materials or soil-stabilising materials containing organic compounds only
C09K 17/16 Soil-conditioning materials or soil-stabilising materials containing organic compounds only applied in a physical form other than a solution or a grout, e.g. as platelets or granules
C09K 17/18 Prepolymers; Macromolecular compounds
C09K 17/20 Vinyl polymers
C09K 17/22 Polyacrylates; Polymethacrylates
C09K 17/24 Condensation polymers of aldehydes or ketones
C09K 17/26 Phenol-aldehyde condensation polymers
C09K 17/28 Urea-aldehyde condensation polymers
C09K 17/30 Polyisocyanates; Polyurethanes
C09K 17/32 Prepolymers; Macromolecular compounds of natural origin, e.g. cellulosic materials
C09K 17/34 Bituminous materials
C09K 17/36 Compounds having one or more carbon-to-silicon linkages
C09K 17/38 Siloxanes
C09K 17/40 Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
C09K 17/42 Inorganic compounds mixed with organic active ingredients, e.g. accelerators
C09K 17/44 Inorganic compounds mixed with organic active ingredients, e.g. accelerators the inorganic compound being cement
C09K 17/46 Inorganic compounds mixed with organic active ingredients, e.g. accelerators the inorganic compound being a water-soluble silicate
C09K 17/48 Organic compounds mixed with inorganic active ingredients, e.g. polymerisation catalysts
C09K 17/50 Organic compounds mixed with inorganic active ingredients, e.g. polymerisation catalysts the organic compound being of natural origin, e.g. cellulose derivatives
C09K 17/52 Mulches
C09K 19/00 Liquid crystal materials
C09K 19/02 Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
C09K 19/04 Liquid crystal materials characterised by the chemical structure of the liquid crystal components
C09K 19/06 Non-steroidal liquid crystal compounds
C09K 19/08 Non-steroidal liquid crystal compounds containing at least two non-condensed rings
C09K 19/10 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
C09K 19/12 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
C09K 19/14 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain
C09K 19/16 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain the chain containing carbon-to-carbon double bonds, e.g. stilbenes
C09K 19/18 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain the chain containing carbon-to-carbon triple bonds, e.g. tolans
C09K 19/20 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters
C09K 19/22 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and nitrogen atoms as chain links, e.g. Schiff bases
C09K 19/24 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing nitrogen-to-nitrogen bonds
C09K 19/26 Azoxy compounds
C09K 19/28 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and sulfur atoms as chain links, e.g. thioesters
C09K 19/30 Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
C09K 19/32 Non-steroidal liquid crystal compounds containing condensed ring systems, i.e. fused, bridged or spiro ring systems
C09K 19/34 Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
C09K 19/36 Steroidal liquid crystal compounds
C09K 19/38 Polymers, e.g. polyamides
C09K 19/40 Liquid crystal materials characterised by the chemical structure of the liquid crystal components containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen or sulfur, e.g. silicon, metals
C09K 19/42 Mixtures of liquid crystal compounds covered by two or more of the preceding groups
C09K 19/44 Mixtures of liquid crystal compounds covered by two or more of the preceding groups containing compounds with benzene rings directly linked
C09K 19/46 Mixtures of liquid crystal compounds covered by two or more of the preceding groups containing esters
C09K 19/48 Mixtures of liquid crystal compounds covered by two or more of the preceding groups containing Schiff bases
C09K 19/50 Mixtures of liquid crystal compounds covered by two or more of the preceding groups containing steroidal liquid crystal compounds
C09K 19/52 Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives
C09K 19/54 Additives having no specific mesophase
C09K 19/56 Aligning agents
C09K 19/58 Dopants or charge transfer agents
C09K 19/60 Pleochroic dyes
C09K 21/00 Fireproofing materials
C09K 21/02 Inorganic materials
C09K 21/04 Inorganic materials containing phosphorus
C09K 21/06 Organic materials
C09K 21/08 Organic materials containing halogen
C09K 21/10 Organic materials containing nitrogen
C09K 21/12 Organic materials containing phosphorus
C09K 21/14 Macromolecular materials
C09K 23/00 Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
C09K 23/02 Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols
C09K 23/04 Sulfonates or sulfuric acid ester salts derived from polyhydric alcohols or amino alcohols or derivatives thereof
C09K 23/06 Esters of higher fatty acids with hydroxyalkylated sulfonic acids or salts thereof
C09K 23/08 Sulfation or sulfonation products of fats, oils, waxes, or higher fatty acids or esters thereof with monovalent alcohols
C09K 23/10 Derivatives of low-molecular-weight sulfocarboxylic acids or sulfopolycarboxylic acids
C09K 23/12 Sulfonates of aromatic or alkylated aromatic compounds
C09K 23/14 Derivatives of phosphoric acid
C09K 23/16 Amines or polyamines
C09K 23/18 Quaternary ammonium compounds
C09K 23/20 Phosphonium and sulfonium compounds
C09K 23/22 Amides or hydrazides
C09K 23/24 Amides of higher fatty acids with aminoalkylated sulfonic acids
C09K 23/26 Sulfonamides
C09K 23/28 Aminocarboxylic acids
C09K 23/30 Proteins; Protein hydrolysates
C09K 23/32 Heterocyclic compounds
C09K 23/34 Higher-molecular-weight carboxylic acid esters
C09K 23/36 Esters of polycarboxylic acids
C09K 23/38 Alcohols, e.g. oxidation products of paraffins
C09K 23/40 Phenols
C09K 23/42 Ethers, e.g. polyglycol ethers of alcohols or phenols
C09K 23/44 Ether carboxylic acids
C09K 23/46 Ethers of aminoalcohols
C09K 23/48 Cellulose ethers
C09K 23/50 Derivatives of lignin
C09K 23/52 Natural or synthetic resins or their salts
C09K 23/54 Silicon compounds
C09K 23/56 Glucosides; Mucilage; Saponins
C09K 101/00 Agricultural use
C09K 103/00 Civil engineering use
C09K 105/00 Erosion prevention
C09K 107/00 Impermeabilisation
C09K 109/00 MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR pH regulation