GB955373A - - Google Patents
Info
- Publication number
- GB955373A GB955373A GB955373DA GB955373A GB 955373 A GB955373 A GB 955373A GB 955373D A GB955373D A GB 955373DA GB 955373 A GB955373 A GB 955373A
- Authority
- GB
- United Kingdom
- Prior art keywords
- residues
- substituted
- carbodiimides
- alkoxy
- halogen
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
955,373. Carbo-diimides. FARBENFABRIKEN BAYER A.G. June 1, 1962 [June 3, 1961], No. 21288/62. Heading C2C. [Also in Division C3] Acrylonitrile polymer solutions in organic solvents are shaped in the presence of one or more carbodiimides as stabilizer in an amount of 0À1 to 3% by weight based on the polymer. The stabilizers may be mono- or polycarbodiimides which in addition to carbodiimide groupings may contain hydrocarbon residues or hydrocarbon bridges which may in turn be substituted by halogen, alkoxy or carboxy residues or nitro groups. The preferred carbodiimides are 0,0<SP>1</SP>-substituted diphenyl carbodiimides of formula: where R 1 represents alkyl, aralkyl or alkoxy residues containing 1 to 18 carbon atoms, R 2 hydrogen, alkyl, aralkyl, halogen or carboxy residues, and R 3 , R 4 and R 5 hydrogen alkyl, alkoxy or halogen residues. These preferred carbodiimides may be prepared by the processes of Specification 851,936 or they may be prepared by heating the corresponding aromatic isocyanates substituted in the o-position in relation to the isocyanate group, in the presence of tertiary amines, basically reacting metal compounds, carbonates of metal salts or non- basic organometallic compounds at temperatures between 120‹ and 300 ‹C. The reaction is as follows: 2 R-NCO#R-N = C = N-R+CO 2 Lists of o-substituted aromatic isocyanates and lists of catalysts are given. The isocyanate is preferably treated with 0À01 to 10% of catalyst. Specifications 686,639 and 867,006 also are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR899155A FR1323424A (en) | 1962-05-30 | 1962-05-30 | Method of manufacturing shaped articles made of acrylonitrile polymers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB955373A true GB955373A (en) |
Family
ID=8780025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB955373D Active GB955373A (en) | 1962-05-30 |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE618389A (en) |
FR (1) | FR1323424A (en) |
GB (1) | GB955373A (en) |
-
0
- GB GB955373D patent/GB955373A/en active Active
- BE BE618389D patent/BE618389A/xx unknown
-
1962
- 1962-05-30 FR FR899155A patent/FR1323424A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1323424A (en) | 1963-04-05 |
BE618389A (en) |
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