FR2223417A1 - Curing polyurethane prepolymers - with mixture of catalyst and hydrogen cyanide or polycyanoformamide - Google Patents
Curing polyurethane prepolymers - with mixture of catalyst and hydrogen cyanide or polycyanoformamideInfo
- Publication number
- FR2223417A1 FR2223417A1 FR7311609A FR7311609A FR2223417A1 FR 2223417 A1 FR2223417 A1 FR 2223417A1 FR 7311609 A FR7311609 A FR 7311609A FR 7311609 A FR7311609 A FR 7311609A FR 2223417 A1 FR2223417 A1 FR 2223417A1
- Authority
- FR
- France
- Prior art keywords
- polycyanoformamide
- catalyst
- polyurethane prepolymers
- mixture
- hydrogen cyanide
- 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.)
- Granted
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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Polyurethane prepolymers with a mol.wt. of 300-10,000 are cured by treating with a mixt. of a catalyst and a curing agent selected from (a) HCN, (b) HCN+ polyisocyanate, or (c) polycyanoformamide with a mol.wt. of 40-2000, in order to introduce heterocyclic groups of formula (I) between the prepolymer molecules. (where X and Y are each O or NH, but both X and Y are not NH). The cured polymers have a high strength.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7311609A FR2223417A1 (en) | 1973-03-30 | 1973-03-30 | Curing polyurethane prepolymers - with mixture of catalyst and hydrogen cyanide or polycyanoformamide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7311609A FR2223417A1 (en) | 1973-03-30 | 1973-03-30 | Curing polyurethane prepolymers - with mixture of catalyst and hydrogen cyanide or polycyanoformamide |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2223417A1 true FR2223417A1 (en) | 1974-10-25 |
FR2223417B1 FR2223417B1 (en) | 1977-08-26 |
Family
ID=9117178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7311609A Granted FR2223417A1 (en) | 1973-03-30 | 1973-03-30 | Curing polyurethane prepolymers - with mixture of catalyst and hydrogen cyanide or polycyanoformamide |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2223417A1 (en) |
-
1973
- 1973-03-30 FR FR7311609A patent/FR2223417A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2223417B1 (en) | 1977-08-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CD | Change of name or company name | ||
ST | Notification of lapse |