ES481499A1 - Improvements in a procedure for the preparation of a polyurethane. (Machine-translation by Google Translate, not legally binding) - Google Patents
Improvements in a procedure for the preparation of a polyurethane. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES481499A1 ES481499A1 ES481499A ES481499A ES481499A1 ES 481499 A1 ES481499 A1 ES 481499A1 ES 481499 A ES481499 A ES 481499A ES 481499 A ES481499 A ES 481499A ES 481499 A1 ES481499 A1 ES 481499A1
- Authority
- ES
- Spain
- Prior art keywords
- polyurethane
- translation
- machine
- legally binding
- google translate
- 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
Landscapes
- Polyethers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Improvements in a process for preparing a polyurethane, comprising reacting under suitable conditions: (A) a polymer of tetrahydrofuran and alkylene oxide whose ring contains two or three carbon atoms; (B) an excess over the stoichiometric amount of an organic polyisocyanate; and © a quantity of a chain elongator which is an aliphatic polyol or polyamione, calculated to give an isocyanate/hydroxyl or amine molar ratio of approximately 0.9-1.1 to 1, the improvement of which includes the use of a polymerized tetrahydrofuran/alkylene oxide containing not more than about 3%, by weight, of oligomeric cyclic ethers. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US91519178A | 1978-06-13 | 1978-06-13 | |
US05/966,602 US4224432A (en) | 1978-12-11 | 1978-12-11 | Polyurethanes prepared with tetrahydrofuran-alkylene oxide polymerizates having low oligomeric cyclic ether content |
Publications (1)
Publication Number | Publication Date |
---|---|
ES481499A1 true ES481499A1 (en) | 1980-06-16 |
Family
ID=27129664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES481499A Expired ES481499A1 (en) | 1978-06-13 | 1979-06-12 | Improvements in a procedure for the preparation of a polyurethane. (Machine-translation by Google Translate, not legally binding) |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA1143889A (en) |
ES (1) | ES481499A1 (en) |
-
1979
- 1979-06-08 CA CA000329376A patent/CA1143889A/en not_active Expired
- 1979-06-12 ES ES481499A patent/ES481499A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA1143889A (en) | 1983-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES275846A1 (en) | Procedure for obtaining a polyurethane polymer (Machine-translation by Google Translate, not legally binding) | |
ES464399A1 (en) | Polymer/polyols from high ethylene oxide content polyols | |
ES464014A1 (en) | Process for the preparation of polyurethanes which are dispersible in water | |
ES319454A1 (en) | Procedure for the preparation of a sparkling polyurethane. (Machine-translation by Google Translate, not legally binding) | |
ES443041A1 (en) | Process for the production of water-soluble or water-dispersible blocked polyisocyanates | |
ES407802A1 (en) | Rigid polyurethane compositions | |
ES458225A1 (en) | Polymer/polyols and polyurethane forms and elastomers therefrom | |
ES471695A1 (en) | Polyurethane-urea elastomers and process for their preparation. | |
DE3274115D1 (en) | Process for the manufacture of possibly cellular polyurethane elastomers | |
IL55989A (en) | Diol oligomers | |
ES428648A1 (en) | Shaped polyurethane articles and a method for making them | |
ES8102159A1 (en) | Process for the preparation of cellular polyurethane elastomers. | |
ES481499A1 (en) | Improvements in a procedure for the preparation of a polyurethane. (Machine-translation by Google Translate, not legally binding) | |
ES483664A1 (en) | Transparent, elastic polyurethane urea elastomers, process for preparing same and their use in the production of shoe soles. | |
ES320129A1 (en) | Procedure for preparation of non-flexible cellular polyurethanes. (Machine-translation by Google Translate, not legally binding) | |
ES440766A1 (en) | Thermoplastic elastic polyurethanes | |
GB1450306A (en) | ||
ES458536A1 (en) | Liquid diphenylmethana diisocyanate formulation | |
ES409466A1 (en) | Adhesive solutions | |
ES319399A1 (en) | Procedure for preparing a segmented, practically linear, polyeteruretan-urea copolymer. (Machine-translation by Google Translate, not legally binding) | |
GB1339931A (en) | Process for preparing polyurethanes | |
ES309063A1 (en) | Procedure for obtaining polyisocianate compositions. (Machine-translation by Google Translate, not legally binding) | |
SE7708525L (en) | RADIATION CURTAIN COATING MIXTURE | |
GB1459257A (en) | Capped polyols and curable compositions prepared therefrom | |
ES8106884A1 (en) | Process for preparing urethanes and their use in the preparation of isocyanates. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Patent lapsed |
Effective date: 19960401 |