BE741815A - - Google Patents
Info
- Publication number
- BE741815A BE741815A BE741815DA BE741815A BE 741815 A BE741815 A BE 741815A BE 741815D A BE741815D A BE 741815DA BE 741815 A BE741815 A BE 741815A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/343—Polycarboxylic acids having at least three carboxylic acid groups
- C08G18/346—Polycarboxylic acids having at least three carboxylic acid groups having four carboxylic acid groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/302—Water
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1003—Preparatory processes
- C08G73/1035—Preparatory processes from tetracarboxylic acids or derivatives and diisocyanates
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1722868A CH500245A (en) | 1968-11-19 | 1968-11-19 | Process for the manufacture of a product in solution intended for the manufacture, by heating, of a polymer containing imide groups |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE741815A true BE741815A (en) | 1970-05-19 |
Family
ID=4423762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE741815D BE741815A (en) | 1968-11-19 | 1969-11-17 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE741815A (en) |
| BR (1) | BR6914013D0 (en) |
| CH (1) | CH500245A (en) |
| DE (1) | DE1958900A1 (en) |
| FR (1) | FR2027541A1 (en) |
| LU (1) | LU59835A1 (en) |
| NL (1) | NL6917297A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3853813A (en) * | 1973-05-24 | 1974-12-10 | Westinghouse Electric Corp | Polyimide precursor and method and composition for preparing it |
-
1968
- 1968-11-19 CH CH1722868A patent/CH500245A/en not_active IP Right Cessation
-
1969
- 1969-11-07 BR BR21401369A patent/BR6914013D0/en unknown
- 1969-11-17 FR FR6939474A patent/FR2027541A1/en active Pending
- 1969-11-17 BE BE741815D patent/BE741815A/xx unknown
- 1969-11-18 NL NL6917297A patent/NL6917297A/xx unknown
- 1969-11-18 LU LU59835D patent/LU59835A1/xx unknown
- 1969-11-18 DE DE19691958900 patent/DE1958900A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BR6914013D0 (en) | 1973-01-11 |
| LU59835A1 (en) | 1970-05-27 |
| FR2027541A1 (en) | 1970-10-02 |
| DE1958900A1 (en) | 1970-06-18 |
| NL6917297A (en) | 1970-05-21 |
| CH500245A (en) | 1970-12-15 |