Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
  • C09K8/60—Compositions for stimulating production by acting on the underground formation
  • C09K8/84—Compositions based on water or polar solvents
  • C09K8/86—Compositions based on water or polar solvents containing organic compounds
  • C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
  • C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
  • C09K8/905—Biopolymers
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
  • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
  • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
  • C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
  • C08B37/0033—Xanthan, i.e. D-glucose, D-mannose and D-glucuronic acid units, saubstituted with acetate and pyruvate, with a main chain of (beta-1,4)-D-glucose units; Derivatives thereof
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
  • C09K8/02—Well-drilling compositions
  • C09K8/03—Specific additives for general use in well-drilling compositions
  • C09K8/035—Organic additives
• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
  • C12P19/00—Preparation of compounds containing saccharide radicals
  • C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
  • C12P19/00—Preparation of compounds containing saccharide radicals
  • C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
  • C12P19/06—Xanthan, i.e. Xanthomonas-type heteropolysaccharides

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• General Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Biochemistry (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Materials Engineering (AREA)
• General Chemical & Material Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Biotechnology (AREA)
• Genetics & Genomics (AREA)
• Microbiology (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Emergency Medicine (AREA)
• Molecular Biology (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Preparation Of Compounds By Using Micro-Organisms (AREA)
• Separation Using Semi-Permeable Membranes (AREA)
• Polysaccharides And Polysaccharide Derivatives (AREA)
• Saccharide Compounds (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=10516362

Family Applications (1)

Country Status (16)

Families Citing this family (10)

Family Cites Families (9)

• 1981
  • 1981-09-14 DE DE8181201026T patent/DE3172841D1/de not_active Expired
  • 1981-09-14 EP EP81201026A patent/EP0049012B1/en not_active Expired
  • 1981-09-21 CA CA000386345A patent/CA1173769A/en not_active Expired
  • 1981-09-24 KR KR1019810003570A patent/KR880002534B1/ko active
  • 1981-09-25 HU HU812772A patent/HU191222B/hu not_active IP Right Cessation
  • 1981-09-25 DK DK427481A patent/DK161188C/da active
  • 1981-09-25 NO NO813265A patent/NO157898B/no unknown
  • 1981-09-25 BR BR8106153A patent/BR8106153A/pt unknown
  • 1981-09-25 IE IE2234/81A patent/IE51749B1/en unknown
  • 1981-09-25 AU AU75669/81A patent/AU552082B2/en not_active Ceased
  • 1981-09-25 ZA ZA816672A patent/ZA816672B/xx unknown
  • 1981-09-25 NZ NZ198465A patent/NZ198465A/en unknown
  • 1981-09-25 JP JP56150864A patent/JPS5786296A/ja active Granted
  • 1981-09-25 IL IL63939A patent/IL63939A/xx not_active IP Right Cessation
  • 1981-09-25 RO RO105403A patent/RO85215B/ro unknown
  • 1981-09-25 FI FI812992A patent/FI69084C/fi not_active IP Right Cessation

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