US3725510A
Expired / Lapsed
US
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Phosphite-phosphates
Assignee: Borg Warner Corp
•
Filing: 1970-02-05
•
Granted: 1973-04-03
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Expires: 1990-02-05
Abstract
Abstract Trivalent phosphorus halides and tertiary phosphites react readily with a para-quinone to produce arylene phosphitephosphate derivatives useful as flame retardants for organic materials.
Inventors
- 👤 J Dever
- 👤 J Hodan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/527; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12; C07F9/141; C07F9/145; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
29 words
The compounds of claim 1 in which R and R'' are independently selected from the group consisting of lower alkoxy, lower-dioxy-alkylene and ortho-dioxy-arylene of six to 10 carbon atoms.
Claim 2
Dependent Claim
18 words
The compounds of claim 1 in which n is O, A is para-phenylene and R'' is lower alkoxy.
Claim 3
Dependent Claim
9 words
A compound of claim 1 having the structural formula:
Claim 4
Dependent Claim
9 words
A compound of claim 1 having the structural formula:
Claim 5
Dependent Claim
9 words
A compound of claim 1 having the structural formula:
Claim 6
Dependent Claim
9 words
A compound of claim 1 having the structural formula:
Claim 7
Dependent Claim
9 words
A compound of claim 1 having the structural formula:
Claim 8
Dependent Claim
154 words
A process which comprises reacting a non-meso, para-quinone with a mixture of A. a compound of the formula: RnPX3 n in which R is a member independently selected from the group consisting of lower alkyl, aryl of six to 10 carbon atoms, lower alkoxy, lower-dioxy-alkylene, ortho-dioxy-arylene of 6 to 10 carbon atoms, aryloxy of six to 10 carbon atoms, lower dialkylamino, diarylamino of 12 to 20 carbon atoms, lower alkylmercapto and arylmercapto of six to 10 carbon atoms, n is an integer from 0 to 2, and X is a member selected from the group consisting of -Cl and -Br, and B. a compound of the formula: (R'')2POR'''' in which R'' is a member independently selected from the group consisting of lower alkoxy, aryloxy of six to 10 carbon atoms, lower-dioxy-alkylene and ortho-dioxy-arylene of six to 10 carbon atoms, and R'''' is lower alkyl and lower-haloalkyl at a temperature from 0* to 95* C.
References Cited (Backward Citations)
US2974158A
Cited
US2839563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |