US4323501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of phosphorous acid
Assignee: Bayer AG
•
Filing: 1977-10-18
•
Granted: 1982-04-06
•
Expires: 1997-10-18
Abstract
Abstract Phosphites of the general formula: ##STR1## in which n 1 is an integer; n 2 is 0 or an integer; n 3 is an integer; at least one of the groups R is an oxetane group as hereinafter defined or a hydrocarbon radical being substituted at least by one oxetane group as hereinafter defined; the remaining groups R are selected from alkyl, aralkyl, cycloalkyl, aryl and hetaryl groups; and the group or groups Ar are the same or different at-least-divalent aromatic groups the free valencies of which are directly linked to the aromatic nuclei; and a process for their preparation.
Inventors
- 👤 Erich Eimers
- 👤 Dieter Margotte
- 👤 Helmut Schmid
- 👤 Rolf Dhein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/529; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/145; C07F9/547; C07F9/655; C07F9/6551; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65746; C08L; C08L69/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
3 words
The phosphite: ##STR17##
Claim 2
Dependent Claim
3 words
The phosphite: ##STR17##
Claim 3
Dependent Claim
3 words
The phosphite: ##STR18##
Claim 4
Dependent Claim
3 words
The phosphite: ##STR18##
Claim 5
Dependent Claim
3 words
The phosphite: ##STR19##
Claim 6
Dependent Claim
3 words
The phosphite: ##STR19##
Claim 7
Dependent Claim
3 words
The phosphite: ##STR20##
Claim 8
Dependent Claim
3 words
The phosphite: ##STR20##
Claim 9
Dependent Claim
3 words
The phosphite: ##STR21##
Claim 10
Dependent Claim
3 words
The phosphite: ##STR21##
Claim 11
Dependent Claim
6 words
A phosphite of the formula: ##STR22##
Claim 12
Dependent Claim
6 words
A phosphite of the formula: ##STR22##
Claim 13
Dependent Claim
6 words
A phosphite of the formula: ##STR23##
Claim 14
Dependent Claim
6 words
A phosphite of the formula: ##STR23##
Claim 15
Dependent Claim
6 words
A phosphite of the formula: ##STR24##
Claim 16
Dependent Claim
6 words
A phosphite of the formula: ##STR24##
Claim 17
Dependent Claim
6 words
A phosphite of the formula: ##STR25##
Claim 18
Dependent Claim
6 words
A phosphite of the formula: ##STR25##
Claim 19
Dependent Claim
6 words
A phosphite of the formula: ##STR26##
Claim 20
Dependent Claim
6 words
A phosphite of the formula: ##STR26##
Claim 21
Dependent Claim
6 words
A phosphite of the formula: ##STR27##
Claim 22
Dependent Claim
6 words
A phosphite of the formula: ##STR27##
Claim 23
Dependent Claim
6 words
A phosphite of the formula: ##STR28##
Claim 24
Dependent Claim
6 words
A phosphite of the formula: ##STR28##
Claim 25
Dependent Claim
6 words
A phosphite of the formula: ##STR29##
Claim 26
Dependent Claim
6 words
A phosphite of the formula: ##STR29##
Claim 27
Dependent Claim
6 words
A phosphite of the formula: ##STR30##
Claim 28
Dependent Claim
6 words
A phosphite of the formula: ##STR30##
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) | 1985-04-05 | 1985-10-05 | 1986-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-05 | 1989-10-05 | 1990-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-05 | 1993-10-05 | 1994-04-06 | $7700.00 | Window Closed / Lapsed |