ES461400A1 - Rigid flame-resistant polyurethane foams prodn. - from urea, alkylene oxide and poly:isocyanate - Google Patents
Rigid flame-resistant polyurethane foams prodn. - from urea, alkylene oxide and poly:isocyanateInfo
- Publication number
- ES461400A1 ES461400A1 ES461400A ES461400A ES461400A1 ES 461400 A1 ES461400 A1 ES 461400A1 ES 461400 A ES461400 A ES 461400A ES 461400 A ES461400 A ES 461400A ES 461400 A1 ES461400 A1 ES 461400A1
- Authority
- ES
- Spain
- Prior art keywords
- urea
- polyurethane foams
- prodn
- isocyanate
- poly
- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3819—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen
- C08G18/3823—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen containing -N-C=O groups
- C08G18/3829—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen containing -N-C=O groups containing ureum 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)
Abstract
Polyurethanes, such as rigid polyurethane foams, are mfd. by (a) preparing a deriv. of urea by addn. of 1-3 moles, pref. 1.5-2.5 moles of the or more alkylene oxides to 1 mol. urea in the absence of basic cpds. at 100-140 degrees C, pref. 110-130 degrees C, and (b) reacting the urea deriv. from (a) with one or more organic polyisocyanates. Used for the mfr. of flame-resistant rigid polyurethane foams, the prods. also having good mechanical properties.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7624154A FR2360619A1 (en) | 1976-08-06 | 1976-08-06 | Rigid flame-resistant polyurethane foams prodn. - from urea, alkylene oxide and poly:isocyanate |
Publications (1)
Publication Number | Publication Date |
---|---|
ES461400A1 true ES461400A1 (en) | 1978-05-16 |
Family
ID=9176651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES461400A Expired ES461400A1 (en) | 1976-08-06 | 1977-08-05 | Rigid flame-resistant polyurethane foams prodn. - from urea, alkylene oxide and poly:isocyanate |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE857516A (en) |
DE (1) | DE2735244A1 (en) |
ES (1) | ES461400A1 (en) |
FR (1) | FR2360619A1 (en) |
IT (1) | IT1085357B (en) |
NL (1) | NL7708573A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3332794A1 (en) * | 1983-09-10 | 1985-03-28 | Bayer Ag, 5090 Leverkusen | USE OF POLY-HYDROXYALKYL-MONO-UREA MATERIALS FOR PU-FOAMS, DISPERSIONS OF THE POLY-HYDROXYALKYL-MONO-UREA-MATERIALS IN POLYOLEN, AND NEW TRIS-HYDROXYALKYST-MONO-HARNESS |
DE3608962A1 (en) * | 1985-10-08 | 1987-04-09 | Bayer Ag | OLIGOURANE POLYOLS, POLYETHER POLYOLS OBTAINED FROM THEM AND THE USE OF THESE POLYOLS IN THE ISOCYANATE POLYADDITION PROCESS |
-
1976
- 1976-08-06 FR FR7624154A patent/FR2360619A1/en not_active Withdrawn
-
1977
- 1977-08-03 NL NL7708573A patent/NL7708573A/en not_active Application Discontinuation
- 1977-08-04 DE DE19772735244 patent/DE2735244A1/en active Pending
- 1977-08-05 ES ES461400A patent/ES461400A1/en not_active Expired
- 1977-08-05 BE BE179929A patent/BE857516A/en unknown
- 1977-08-05 IT IT2653977A patent/IT1085357B/en active
Also Published As
Publication number | Publication date |
---|---|
IT1085357B (en) | 1985-05-28 |
FR2360619A1 (en) | 1978-03-03 |
DE2735244A1 (en) | 1978-02-09 |
BE857516A (en) | 1978-02-06 |
NL7708573A (en) | 1978-02-08 |
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