PH14624A - Preparation of cellulose nitrite - Google Patents
Preparation of cellulose nitriteInfo
- Publication number
- PH14624A PH14624A PH17356A PH17356A PH14624A PH 14624 A PH14624 A PH 14624A PH 17356 A PH17356 A PH 17356A PH 17356 A PH17356 A PH 17356A PH 14624 A PH14624 A PH 14624A
- Authority
- PH
- Philippines
- Prior art keywords
- cellulose
- ester
- water
- nitrite
- solvent
- Prior art date
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)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (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.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48719674A | 1974-07-10 | 1974-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PH14624A true PH14624A (en) | 1981-10-12 |
Family
ID=23934765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PH17356A PH14624A (en) | 1974-07-10 | 1975-07-02 | Preparation of cellulose nitrite |
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)
| 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 |
-
1975
- 1975-07-02 PH PH17356A patent/PH14624A/en unknown
- 1975-07-03 FI FI751951A patent/FI62542C/en not_active IP Right Cessation
- 1975-07-08 BR BR5531/75D patent/BR7504317A/en unknown
- 1975-07-08 DE DE19752530451 patent/DE2530451A1/en not_active Ceased
- 1975-07-08 IT IT50411/75A patent/IT1045532B/en active
- 1975-07-08 GB GB28676/75A patent/GB1521125A/en not_active Expired
- 1975-07-08 EG EG398/75A patent/EG12431A/en active
- 1975-07-09 JP JP8435075A patent/JPS5328345B2/ja not_active Expired
- 1975-07-09 AU AU82881/75A patent/AU504059B2/en not_active Expired
- 1975-07-09 SE SE7507871A patent/SE7507871L/en not_active Application Discontinuation
- 1975-07-09 NO NO752460A patent/NO141994C/en unknown
- 1975-07-10 CA CA231,223A patent/CA1051880A/en not_active Expired
- 1975-07-10 BE BE7000681A patent/BE831238A/en unknown
- 1975-07-10 RO RO7597354A patent/RO76171A/en unknown
- 1975-07-10 AR AR259524A patent/AR215842A1/en active
- 1975-07-10 NL NLAANVRAGE7508261,A patent/NL169884C/en not_active IP Right Cessation
- 1975-07-10 HU HU75SCHE525A patent/HU175674B/en unknown
-
1979
- 1979-04-26 NO NO791389A patent/NO791389L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EG12431A (en) | 1979-06-30 |
| NO141994B (en) | 1980-03-03 |
| FI751951A (en) | 1976-01-11 |
| FI62542B (en) | 1982-09-30 |
| JPS5131787A (en) | 1976-03-18 |
| AR215842A1 (en) | 1979-11-15 |
| HU175674B (en) | 1980-09-28 |
| NO141994C (en) | 1980-06-25 |
| AU8288175A (en) | 1977-02-10 |
| NL169884B (en) | 1982-04-01 |
| IT1045532B (en) | 1980-05-10 |
| DE2530451A1 (en) | 1976-01-29 |
| NO791389L (en) | 1976-01-13 |
| AU504059B2 (en) | 1979-10-04 |
| NL169884C (en) | 1982-09-01 |
| SE7507871L (en) | 1976-01-12 |
| GB1521125A (en) | 1978-08-16 |
| RO76171A (en) | 1981-11-04 |
| JPS5328345B2 (en) | 1978-08-14 |
| BR7504317A (en) | 1976-07-06 |
| CA1051880A (en) | 1979-04-03 |
| FI62542C (en) | 1983-01-10 |
| BE831238A (en) | 1976-01-12 |
| NL7508261A (en) | 1976-01-13 |
| NO752460L (en) | 1976-01-13 |
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