US3948980A
Expired / Lapsed
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Tertiary phosphine
Assignee: Hoechst AG
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Filing: 1974-05-31
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Granted: 1976-04-06
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Expires: 1994-05-31
Abstract
Abstract Novel tertiary phosphine oxides containing in one radical at least two hydroxy groups or functional derivatives thereof are obtained by adding olefins having at least two hydroxy groups or functional derivatives thereof to secondary phosphine oxides at elevated temperatures in the presence of a free radical generator. The products are useful as flame-retardant agents and intermediates for anti-corrosive agents and pesticides.
Inventors
- 👤 Udo Dettmeier
- 👤 Hans-Jerg Kleiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5397; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/53; C07F9/5304
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A compound of the formula ##EQU7## in which R 1 and R 2 are alkyl of 1 to 12 carbon atoms or cycloalkyl of 4 to 8 carbon atoms, R 3 is hydrogen, lower alkyl, cycloalkyl of 4 to 8 carbon atoms, or a group of the formula -- R.sub.6 -- Y in which R 6 is lower alkylene and Y is hydroxy, lower alkoxy or lower alkanoyloxy, R 4 is hydrogen, lower alkyl or a group of the formula -- R.sub.7 -- Y in which R 7 is lower alkylene and Y is as defined above, R 5 is a saturated lower alkylene radical of 1 to 5 carbon atoms and n is 1 to 3, X is hydroxy, lower alkoxy, or lower alkanoyloxy, with the proviso that in the molecule at least 2 Y are present.
Claim 2
Dependent Claim
138 words
A compound of the formula ##EQU7## in which R 1 and R 2 are alkyl of 1 to 12 carbon atoms or cycloalkyl of 4 to 8 carbon atoms, R 3 is hydrogen, lower alkyl, cycloalkyl of 4 to 8 carbon atoms, or a group of the formula -- R.sub.6 -- Y in which R 6 is lower alkylene and Y is hydroxy, lower alkoxy or lower alkanoyloxy, R 4 is hydrogen, lower alkyl or a group of the formula -- R.sub.7 -- Y in which R 7 is lower alkylene and Y is as defined above, R 5 is a saturated lower alkylene radical of 1 to 5 carbon atoms and n is 1 to 3, X is hydroxy, lower alkoxy, or lower alkanoyloxy, with the proviso that in the molecule at least 2 Y are present.
Claim 3
Dependent Claim
80 words
The compound as claimed in claim 1, in which R 1 and R 2 are lower alkyl, R 3 and R 4 are hydrogen, lower alkyl or a group of the formula -- R 7 -- Y, in which R 7 is lower alkyl and Y is hydroxy, lower alkoxy or lower alkanoyloxy, R 5 is a bivalent or trivalent saturated alkylene radical of 1 to 5 carbon atoms, X is defined as Y and n is 1 or 2.
Claim 4
Dependent Claim
74 words
The compound as claimed in claim 1, in which R 1 and R 2 are methyl, R 3 and R 4 are hydrogen, lower hydroxyalkyl or (lower alkanoyloxy)-lower alkyl, R 5 is a bivalent or trivalent saturated alkylene radical of 1 to 3 carbon atoms, X is hydroxy, lower alkoxy or lower alkanoyloxy and n is 1 or 2, with the proviso that in the molecule 2 substituents as defined for Y are present.
Claim 5
Dependent Claim
48 words
The compound as claimed in claim 1, in which R 1 and R 2 are methyl, R 3 and R 4 are hydrogen, hydroxymethyl or acetoxymethyl, R 5 is methylene or a trivalent methane radical, X is hydroxy, acetoxy or lower alkoxy and n is 1 or 2.
Claim 6
Dependent Claim
34 words
The compound as claimed in claim 1, wherein R 1 and R 2 are methyl, R 3 is hydroxymethyl, R 4 is hydrogen, R 5 is methylene, X is hydroxy and n is 1.
Claim 7
Dependent Claim
34 words
The compound as claimed in claim 1, wherein R 1 and R 2 are methyl, R 3 is hydrogen, R 4 is hydroxymethyl, R 5 is methylene, X is hydroxy and n is 1.
Claim 8
Dependent Claim
34 words
The compound as claimed in claim 1, wherein R 1 and R 2 are methyl, R 3 is hydrogen, R 4 is acetoxymethyl, R 5 is methylene, X is acetoxy and n is 1.
Claim 9
Dependent Claim
36 words
The compound as claimed in claim 1, wherein R 1 and R 2 are methyl, R 3 and R 4 are hydrogen, R 5 is a trivalent methane radical, X is ethoxy and n is 2.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |