GB1214478A - Improvements in and relating to cellular polyurethanes - Google Patents
Improvements in and relating to cellular polyurethanesInfo
- Publication number
- GB1214478A GB1214478A GB4961167A GB4961167A GB1214478A GB 1214478 A GB1214478 A GB 1214478A GB 4961167 A GB4961167 A GB 4961167A GB 4961167 A GB4961167 A GB 4961167A GB 1214478 A GB1214478 A GB 1214478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prepolymer
- calcium sulphate
- sulphate dihydrate
- prepared
- cellular polyurethanes
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/02—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
1,214,478. Cellular polyurethanes. DUNLOP CO. Ltd. 24 Oct., 1968 [1 November, 1967], No. 49611/67. Headings C3C and C3R. Cellular polyurethanes in which the cells are formed at least partially by the evolution of carbon dioxide resulting from the action of water with NCO groups are prepared by mixing finely divided particles of man-made calcium sulphate dihydrate having no dimension greater than 100 microns with an organic compound having isocyanate groups and with any other polyurethane-forming ingredients, and heating the mixture to a temperature at which the calcium sulphate dihydrate liberates water of crystallization. The polyurethane foam may be made by the " one-shot " or, more preferably, the " prepolymer " process. Suitably, the prepolymer is prepared from polyethylene adipate and an excess of a diisocyanate so that the resulting prepolymer has a softening point below 90‹ C. The calcium sulphate dihydrate may be mixed with the prepolymer alone, but is preferably predispersed with a liquid polyether and a texture control additive such as a sulphonated castor oil derivative and then mixed with the prepolymer. The polyether is preferably poly(propylene glycol) diol. The calcium sulphate dihydrate may be prepared by adding a stoichiometric amount of 2N sulphuric acid slowly to a 40% aqueous solution of calcium chloride, followed by washing the precipitate to neutrality and then drying. Conventional diisocyanates and if desired catalysts and cross-linking agents are added to the reaction mixture.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4961167A GB1214478A (en) | 1967-11-01 | 1967-11-01 | Improvements in and relating to cellular polyurethanes |
| FR1590503D FR1590503A (en) | 1967-11-01 | 1968-11-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4961167A GB1214478A (en) | 1967-11-01 | 1967-11-01 | Improvements in and relating to cellular polyurethanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1214478A true GB1214478A (en) | 1970-12-02 |
Family
ID=10452939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4961167A Expired GB1214478A (en) | 1967-11-01 | 1967-11-01 | Improvements in and relating to cellular polyurethanes |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1590503A (en) |
| GB (1) | GB1214478A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951885A (en) * | 1971-11-01 | 1976-04-20 | Thompson Chemicals, Inc. | Method of making magnesium oxychloride cement cofoamed with synthetic resin |
| US4968724A (en) * | 1990-05-31 | 1990-11-06 | Arco Chemical Technology, Inc. | Hydrated salt systems for controlled release of water in polyurethane foams |
| US5296181A (en) * | 1991-09-19 | 1994-03-22 | Bayer Aktiengesellschaft | Process for the production of composite bodies having enhanced bonding between layers of the composite bodies thus obtained |
| EP1630192A2 (en) * | 2004-07-28 | 2006-03-01 | Inoac Corporation | Process for producing flexible polyurethane foam using hydrated metal salt blowing agents |
| JP2006274074A (en) * | 2005-03-29 | 2006-10-12 | Inoac Corp | Method for producing rigid polyurethane foam |
-
1967
- 1967-11-01 GB GB4961167A patent/GB1214478A/en not_active Expired
-
1968
- 1968-11-04 FR FR1590503D patent/FR1590503A/fr not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951885A (en) * | 1971-11-01 | 1976-04-20 | Thompson Chemicals, Inc. | Method of making magnesium oxychloride cement cofoamed with synthetic resin |
| US4968724A (en) * | 1990-05-31 | 1990-11-06 | Arco Chemical Technology, Inc. | Hydrated salt systems for controlled release of water in polyurethane foams |
| US5296181A (en) * | 1991-09-19 | 1994-03-22 | Bayer Aktiengesellschaft | Process for the production of composite bodies having enhanced bonding between layers of the composite bodies thus obtained |
| EP1630192A2 (en) * | 2004-07-28 | 2006-03-01 | Inoac Corporation | Process for producing flexible polyurethane foam using hydrated metal salt blowing agents |
| EP1630192A3 (en) * | 2004-07-28 | 2006-07-26 | Inoac Corporation | Process for producing flexible polyurethane foam using hydrated metal salt blowing agents |
| US7737192B2 (en) | 2004-07-28 | 2010-06-15 | Inoac Corporation | Process for producing flexible polyurethane foam |
| JP2006274074A (en) * | 2005-03-29 | 2006-10-12 | Inoac Corp | Method for producing rigid polyurethane foam |
| JP4584749B2 (en) * | 2005-03-29 | 2010-11-24 | 株式会社イノアックコーポレーション | Method for producing rigid polyurethane foam |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1590503A (en) | 1970-04-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |