FI751951A - - Google Patents

Info

Publication number
FI751951A
FI751951A FI751951A FI751951A FI751951A FI 751951 A FI751951 A FI 751951A FI 751951 A FI751951 A FI 751951A FI 751951 A FI751951 A FI 751951A FI 751951 A FI751951 A FI 751951A
Authority
FI
Finland
Prior art keywords
cellulose
ester
water
solvent
sulphates
Prior art date
Application number
FI751951A
Other languages
Finnish (fi)
Other versions
FI62542B (en
FI62542C (en
Inventor
Richard Georg Schweiger
Original Assignee
Richard Georg Schweiger
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Richard Georg Schweiger filed Critical Richard Georg Schweiger
Publication of FI751951A publication Critical patent/FI751951A/fi
Priority to FI792994A priority Critical patent/FI792994A/en
Publication of FI62542B publication Critical patent/FI62542B/en
Application granted granted Critical
Publication of FI62542C publication Critical patent/FI62542C/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/34—Introducing sulfur atoms or sulfur-containing groups
    • C08F8/36—Sulfonation; Sulfation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B31/00—Preparation of derivatives of starch
    • C08B31/02—Esters
    • C08B31/06—Esters of inorganic acids
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B5/00—Preparation of cellulose esters of inorganic acids, e.g. phosphates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B5/00—Preparation of cellulose esters of inorganic acids, e.g. phosphates
    • C08B5/02—Cellulose nitrate, i.e. nitrocellulose
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B5/00—Preparation of cellulose esters of inorganic acids, e.g. phosphates
    • C08B5/14—Cellulose sulfate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/42—Introducing metal atoms or metal-containing groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Inorganic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1521125 Cellulose nitrites, sulphates and nitrates R G SCHWEIGER 8 July 1975 [10 July 1974] 28676/75 Heading C3A Nitrite esters of cellulose which may be converted to sulphates or nitrates are prepared by reacting water-containing, cellulose having not more than 12% water content with dinitrogen tetroxide or nitrosyl chloride at less than 50‹ C. with stirring in the presence of at least three parts by weight of a swelling or solubilizing solvent for the nitrite ester per part by weight of cellulose in the presence of proton acceptor. The cellulose preferably contains 4-12% water by treatment with a highly polar aprotic solvent. The solvent used is N,N-dimethylformamide and the highly polar aprotic solvent may be N,N-dimethylformamide, N,N-dimethylacetamide or pyridine. The sulphate ester may be prepared by reacting the nitrile ester with SO3 or a complex thereof and neutralizing with a base to give the alkali salt form.
FI751951A 1974-07-10 1975-07-03 FOER REFRIGERATION FOR CELLULOSANITRITESTER FI62542C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI792994A FI792994A (en) 1974-07-10 1979-09-26 FOERFARANDE FOER FRAMSTAELLNING AV CELLULOSASULFATESTER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48719674A 1974-07-10 1974-07-10
US48719674 1974-07-10

Publications (3)

Publication Number Publication Date
FI751951A true FI751951A (en) 1976-01-11
FI62542B FI62542B (en) 1982-09-30
FI62542C FI62542C (en) 1983-01-10

Family

ID=23934765

Family Applications (1)

Application Number Title Priority Date Filing Date
FI751951A FI62542C (en) 1974-07-10 1975-07-03 FOER REFRIGERATION FOR CELLULOSANITRITESTER

Country Status (17)

Country Link
JP (1) JPS5328345B2 (en)
AR (1) AR215842A1 (en)
AU (1) AU504059B2 (en)
BE (1) BE831238A (en)
BR (1) BR7504317A (en)
CA (1) CA1051880A (en)
DE (1) DE2530451A1 (en)
EG (1) EG12431A (en)
FI (1) FI62542C (en)
GB (1) GB1521125A (en)
HU (1) HU175674B (en)
IT (1) IT1045532B (en)
NL (1) NL169884C (en)
NO (2) NO141994C (en)
PH (1) PH14624A (en)
RO (1) RO76171A (en)
SE (1) SE7507871L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53134191U (en) * 1977-03-30 1978-10-24
JPS57160590A (en) * 1981-03-31 1982-10-02 Matsushita Electric Works Ltd Welding method for contact point
DE102007035322B4 (en) * 2007-07-25 2011-11-17 Friedrich-Schiller-Universität Jena Process for the preparation of water-soluble, low-substituted cellulose sulfates

Also Published As

Publication number Publication date
NL7508261A (en) 1976-01-13
BR7504317A (en) 1976-07-06
AU504059B2 (en) 1979-10-04
BE831238A (en) 1976-01-12
EG12431A (en) 1979-06-30
JPS5131787A (en) 1976-03-18
NO791389L (en) 1976-01-13
JPS5328345B2 (en) 1978-08-14
SE7507871L (en) 1976-01-12
FI62542B (en) 1982-09-30
HU175674B (en) 1980-09-28
GB1521125A (en) 1978-08-16
AR215842A1 (en) 1979-11-15
FI62542C (en) 1983-01-10
NO141994B (en) 1980-03-03
PH14624A (en) 1981-10-12
NL169884C (en) 1982-09-01
NO141994C (en) 1980-06-25
NO752460L (en) 1976-01-13
AU8288175A (en) 1977-02-10
NL169884B (en) 1982-04-01
IT1045532B (en) 1980-05-10
RO76171A (en) 1981-11-04
DE2530451A1 (en) 1976-01-29
CA1051880A (en) 1979-04-03

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: SCHWEIGER, RICHARD GEORG