US4263230A
Expired / Lapsed
US
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Bisphosphonites
Assignee: Akzo America Inc
•
Filing: 1979-10-11
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Granted: 1981-04-21
•
Expires: 1999-10-11
Abstract
Abstract Novel bisphosphonite compounds of the formula: <IMAGE> wherein R1, R2, R3 and R4 are each independently selected from the group consisting of hydrogen and alkyl of from 1 to 10 carbon atoms, and R is selected from the group consisting of cyclic, straight or branched chain alkyl of from 5 to 12 carbon atoms, straight or branched chain haloalkyl of from 1 to 12 carbon atoms, phenyl, and alkyl substituted phenyl wherein each alkyl is from 1 to 12 carbon atoms. The compounds are useful as intermediates for the production of polymers, insecticides, fungicides, pharmaceuticals, catalyst activators, flame retardants and particularly stabilizers, e.g., anti-oxidants.
Inventors
- 👤 Eugene H. Uhing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:03
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5393; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/48; C07F9/4808; C07F9/485
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
57 words
A compound of the formula: ##STR19## wherein R 1 , R 2 , R 3 and R 4 are each hydrogen, and R is selected from the group consisting of straight or branched chain haloalkyl of from 1 to 12 carbon atoms, phenyl, and alkyl substituted phenyl wherein each alkyl is from 1 to 12 carbon atoms.
Claim 2
Dependent Claim
57 words
A compound of the formula: ##STR19## wherein R 1 , R 2 , R 3 and R 4 are each hydrogen, and R is selected from the group consisting of straight or branched chain haloalkyl of from 1 to 12 carbon atoms, phenyl, and alkyl substituted phenyl wherein each alkyl is from 1 to 12 carbon atoms.
Claim 3
Dependent Claim
20 words
The compound of claim 1, wherein R is straight or branched chain chloroalkyl of from 1 to 12 carbon atoms.
Claim 4
Dependent Claim
9 words
The compound of claim 1, wherein R is phenyl.
Claim 5
Dependent Claim
21 words
The compound of claim 1, wherein R is alkyl substituted phenyl wherein each alkyl is from 1 to 12 carbon atoms.
Claim 6
Dependent Claim
6 words
A compound of the formula: ##STR20##
Claim 7
Dependent Claim
6 words
A compound of the formula: ##STR20##
Claim 8
Dependent Claim
6 words
A compound of the formula: ##STR21##
Claim 9
Dependent Claim
6 words
A compound of the formula: ##STR21##
Claim 10
Dependent Claim
6 words
A compound of the formula: ##STR22##
Claim 11
Dependent Claim
6 words
A compound of the formula: ##STR22##
Claim 12
Dependent Claim
10 words
A compound of the formula: ##STR23## wherein φ is phenyl.
Claim 13
Dependent Claim
10 words
A compound of the formula: ##STR23## wherein φ is phenyl.
Claim 14
Dependent Claim
12 words
A compound of the formula: ##STR24## wherein R 5 is 2,4-di-tertbutyl phenyl.
Claim 15
Dependent Claim
12 words
A compound of the formula: ##STR24## wherein R 5 is 2,4-di-tertbutyl phenyl.
Claim 16
Dependent Claim
12 words
A compound of the formula: ##STR25## wherein R 6 is para-nonyl phenyl.
Claim 17
Dependent Claim
12 words
A compound of the formula: ##STR25## wherein R 6 is para-nonyl phenyl.
Claim 18
Dependent Claim
12 words
A compound of the formula: ##STR26## wherein R 7 is 2,6-dimethyl phenyl.
Claim 19
Dependent Claim
12 words
A compound of the formula: ##STR26## wherein R 7 is 2,6-dimethyl phenyl.
References Cited (Backward Citations)
US2957931A
Cited
US3005000A
Cited
US3171818A
Cited
US3270092A
Cited
US3255145A
Cited
US3845169A
Cited
US3681481A
Cited
US3825629A
Cited
US3875264A
Cited
US4029721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |