US4107103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes produced from phosphorus containing flame retarding agents which are reactive with isocyanates
Assignee: Bayer AG
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Filing: 1977-09-26
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Granted: 1978-08-15
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Expires: 1997-09-26
Abstract
Abstract This invention relates to novel halogen-free flame retarding agents and a process in which they are used in the production of polyurethanes. These compounds are represented by the general formula: ##STR1## wherein: R 1 represents C 1 -C 5 alkylene groups which may be branched, R 2 represents C 1 -C 3 alkyl groups which may be branched or R 1 OH and R 3 represents C 1 -C 8 -alkyl, C 1 -C 8 -dialkylamino, C 1 -C 4 -oxyalkyl, C 1 -C 4 -thioslkyl, C 6 -C 14 -aryl or C 7 -C 15 -aralkyl groups or ##STR2## and A and L may be identical or different and represent C 1 -C 10 -alkyl groups, which may be branched, benzyl groups or OR groups, wherein R represents an alkyl group, with 1-8 C atoms which may be branched, or a benzyl group.
Inventors
- 👤 Hans Hubner
- 👤 Johannes Blahak
- 👤 Hans-Joachim Meiners
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:42
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/3889; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6515; C07F9/6521
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
180 words
In a process for the production of polyurethane resins comprising reacting polyisocyanate, high molecular and/or low molecular weight polyols, and optionally other compounds containing groups which are reactive with isocyanates, the improvement which comprises using as compounds which contain groups capable of reacting with isocyanates in such a quantity that the polyurethane contains at least 0.5% by weight of phosphorus, the compounds of the general formula: ##STR15## wherein R 1 represents C 1 -C 5 alkylene groups which may be branched, R 2 represents C 1 -C 3 alkyl groups which may be branched or R 1 OH and R 3 represents C 1 -C 8 -alkyl, C 1 -C 8 -dialkylamino, C 1 -C 4 -oxyalkyl, C 1 -C 4 -thioalkyl, C 6 -C 14 -aryl or C 7 -C 15 -aralkyl groups or ##STR16## and A and L may be identical or different and represent C 1 -C 10 -alkyl groups, which may be branched, benzyl groups or OR groups, wherein R represents an alkyl group, with 1-8 C atoms which may be branched, or a benzyl group.
Claim 2
Dependent Claim
180 words
In a process for the production of polyurethane resins comprising reacting polyisocyanate, high molecular and/or low molecular weight polyols, and optionally other compounds containing groups which are reactive with isocyanates, the improvement which comprises using as compounds which contain groups capable of reacting with isocyanates in such a quantity that the polyurethane contains at least 0.5% by weight of phosphorus, the compounds of the general formula: ##STR15## wherein R 1 represents C 1 -C 5 alkylene groups which may be branched, R 2 represents C 1 -C 3 alkyl groups which may be branched or R 1 OH and R 3 represents C 1 -C 8 -alkyl, C 1 -C 8 -dialkylamino, C 1 -C 4 -oxyalkyl, C 1 -C 4 -thioalkyl, C 6 -C 14 -aryl or C 7 -C 15 -aralkyl groups or ##STR16## and A and L may be identical or different and represent C 1 -C 10 -alkyl groups, which may be branched, benzyl groups or OR groups, wherein R represents an alkyl group, with 1-8 C atoms which may be branched, or a benzyl group.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein said compound of the general formula is: ##STR17## wherein R represents an ethyl or propyl group.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein said compound of the general formula is: ##STR18## wherein R represents an ethyl or propyl group.
Claim 5
Dependent Claim
10 words
The polyurethane resins produced by the process of claim 1.
Claim 6
Dependent Claim
10 words
The polyurethane resins prepared by the process of claim 2.
Claim 7
Dependent Claim
10 words
The polyurethane resin produced by the process of claim 3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |