US4613699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphine oxides and their use as flame retardants in styrene modified polyphenylene ether resins
Assignee: FMC Corp
•
Filing: 1985-03-01
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Granted: 1986-09-23
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Expires: 2005-03-01
Abstract
Abstract A phosphine oxide composition represented by the formula: ##STR1## wherein P is phosphorus, O is oxygen, A is an alkylene chain of 2 to 12 carbon atoms, Z is a polar group, n is 1 or 2, and R is an ethylenically unsaturated alicyclic hydrocarbon or alcohol.
Inventors
- 👤 Joseph Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:29
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; C07F9/532
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
63 words
A phosphine oxide compound represented by the formula: ##STR19## wherein P is phosphorus, O is oxygen, A is an alkylene chain of 2 to 12 carbon atoms, Z is a polar group, n is 1 or 2, and R is an alicyclic hydrocarbon or alcohol selected from the group consisting of alpha pinene, norbornylene, norbornadiene, camphene, dicyclopentadiene, vinyl norbornylene, 5-ethylidene-2-norbornene, terpineol and geraniol.
Claim 2
Dependent Claim
63 words
A phosphine oxide compound represented by the formula: ##STR19## wherein P is phosphorus, O is oxygen, A is an alkylene chain of 2 to 12 carbon atoms, Z is a polar group, n is 1 or 2, and R is an alicyclic hydrocarbon or alcohol selected from the group consisting of alpha pinene, norbornylene, norbornadiene, camphene, dicyclopentadiene, vinyl norbornylene, 5-ethylidene-2-norbornene, terpineol and geraniol.
Claim 3
Dependent Claim
30 words
The composition of claim 1 in which Z is selected from the group consisting of amino, hydroxy, amide, cyano, carboxylic acids and esters thereof and sulfonic acid and esters thereof.
Claim 4
Dependent Claim
14 words
A phosphine oxide compound of the formula ##STR20## wherein n is 1 or 2.
Claim 5
Dependent Claim
14 words
A phosphine oxide compound of the formula ##STR20## wherein n is 1 or 2.
Claim 6
Dependent Claim
12 words
A phosphine oxide compound of the formula ##STR21## wherein n=1 or 2.
Claim 7
Dependent Claim
12 words
A phosphine oxide compound of the formula ##STR21## wherein n=1 or 2.
Claim 8
Dependent Claim
14 words
A phosphine oxide compound of the formula ##STR22## wherein n is 1 or 2.
Claim 9
Dependent Claim
14 words
A phosphine oxide compound of the formula ##STR22## wherein n is 1 or 2.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |