GB1124789A - Improvements in or relating to polyurethanes - Google Patents
Improvements in or relating to polyurethanesInfo
- Publication number
- GB1124789A GB1124789A GB5298664A GB5298664A GB1124789A GB 1124789 A GB1124789 A GB 1124789A GB 5298664 A GB5298664 A GB 5298664A GB 5298664 A GB5298664 A GB 5298664A GB 1124789 A GB1124789 A GB 1124789A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyurethanes
- active hydrogen
- carbon atoms
- ethylene oxide
- hydrogen atoms
- 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.)
- Expired
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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
- C08G18/4845—Polyethers containing oxyethylene units and other oxyalkylene units containing oxypropylene or higher oxyalkylene end groups
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)
- Polyethers (AREA)
Abstract
Polyurethanes are produced by reacting an organic polyisocyanate with a hydroxyl-containing product prepared by adding to a compound containing a plurality of active hydrogen atoms first a 1,2-alkylene oxide having at least 3 carbon atoms, then ethylene oxide, and then a further 1,2-alkylene oxide having at least 3 carbon atoms and either the same as or different from the first one. The compound with active hydrogen atoms may, for example, be water, ammonia, hydrazine, an alcohol or phenol or a carboxylic acid. All the specific examples use trimethylolpropane. Preferably, the polyethers contain 1-25% by wt. of ethylene oxide based on the total oxyalkylene content. An antioxidant may be incorporated into the polyether. Polyisocyanates mentioned may be di- or tri-and may be monomeric or low molecular weight polymers. All the examples use mixtures of 2,4- and 2,6-tolylene di-isocyanate. The polyurethanes may be rigid or flexible, and foamed or not. Conventional gas producers, catalysts and other additives may be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5298664A GB1124789A (en) | 1964-12-31 | 1964-12-31 | Improvements in or relating to polyurethanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5298664A GB1124789A (en) | 1964-12-31 | 1964-12-31 | Improvements in or relating to polyurethanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1124789A true GB1124789A (en) | 1968-08-21 |
Family
ID=10466160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5298664A Expired GB1124789A (en) | 1964-12-31 | 1964-12-31 | Improvements in or relating to polyurethanes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1124789A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2002064A1 (en) * | 1970-01-17 | 1971-07-22 | Bayer Ag | Process for the production of flame-retardant foams based on isocyanate |
| FR2488897A1 (en) * | 1980-08-25 | 1982-02-26 | Texaco Development Corp | PROCESS FOR THE PREPARATION OF A POLYURETHANE ELASTOMER BY REACTION INJECTION MOLDING AND THE FORMED ARTICLE OBTAINED THEREBY |
| GB2181736A (en) * | 1985-10-22 | 1987-04-29 | Basf Corp | Reaction injection molded microcellular polyurethane elastomers |
-
1964
- 1964-12-31 GB GB5298664A patent/GB1124789A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2002064A1 (en) * | 1970-01-17 | 1971-07-22 | Bayer Ag | Process for the production of flame-retardant foams based on isocyanate |
| FR2488897A1 (en) * | 1980-08-25 | 1982-02-26 | Texaco Development Corp | PROCESS FOR THE PREPARATION OF A POLYURETHANE ELASTOMER BY REACTION INJECTION MOLDING AND THE FORMED ARTICLE OBTAINED THEREBY |
| GB2181736A (en) * | 1985-10-22 | 1987-04-29 | Basf Corp | Reaction injection molded microcellular polyurethane elastomers |
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