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US3956331A
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N-(Salicyloylamino)imides and process for the preparation of the same
Assignee: Ube Corp
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Filing: 1974-08-01
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Granted: 1976-05-11
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Expires: 1994-08-01
Abstract
Abstract Novel N-(salicyloylamino)imides which can act as excellent stabilizers for polyolefins are disclosed. A process for the preparation of the same which comprises the reaction of salicyloylhydrazine with a cyclic acid anhydride is also disclosed.
Inventors
- 👤 Toshio Yoshikawa
- 👤 Nagayoshi Sakamoto
- 👤 Tomitada Nagamori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:48
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D221/00; C07D221/02; C07D221/04; C07D221/06; C07D221/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
N-(salicyloylamino)imide represented by the formula ##SPC6## in which A represents a group ##SPC7## in which R 1 -R 4 represent hydrogen atoms, halogen atoms, hydroxyl groups, straight chain alkyl groups having from 1 to 5 carbon atoms, alkoxyl groups having from 1 to 5 carbon atoms, or alkylthio groups having from 1 to 5 carbon atoms, and one of R 1 - R 4 can be replaced with a nitro group, a carboxyl group or a branched chain alkyl group having from 1 to 5 carbon atoms; ##SPC8##
Claim 2
Dependent Claim
88 words
N-(salicyloylamino)imide represented by the formula ##SPC6## in which A represents a group ##SPC7## in which R 1 -R 4 represent hydrogen atoms, halogen atoms, hydroxyl groups, straight chain alkyl groups having from 1 to 5 carbon atoms, alkoxyl groups having from 1 to 5 carbon atoms, or alkylthio groups having from 1 to 5 carbon atoms, and one of R 1 - R 4 can be replaced with a nitro group, a carboxyl group or a branched chain alkyl group having from 1 to 5 carbon atoms; ##SPC8##
Claim 3
Dependent Claim
55 words
An N-(salicyloylamino)imide of claim 1, in which A represents a group ##SPC9## in which R 1 -R 4 represent hydrogen atoms, halogen atoms, hydroxyl groups, straight chain alkyl groups having from 1 to 5 carbon atoms, alkoxy groups having from 1 to 5 carbon atoms, or alkylthio groups having from 1 to 5 carbon atoms.
Claim 4
Dependent Claim
10 words
An N-(salicyloylamino)imide of claim 1, in which A represents ##SPC10##
Claim 5
Dependent Claim
10 words
An N-(salicyloylamino)imide of claim 1, in which A represents ##SPC11##
Claim 6
Dependent Claim
10 words
An N-(salicyloylamino)imide of claim 1, in which A represents ##SPC12##
Claim 7
Dependent Claim
10 words
An N-(salicyloylamino)imide of claim 1, in which A represents ##SPC13##
Claim 8
Dependent Claim
16 words
An N-(salicyloylamino)imide of claim 1, in which all of R 1 -R 4 represent hydrogen atoms.
Claim 9
Dependent Claim
16 words
An N-(salicyloylamino)imide of claim 1, in which all of R 1 -R 4 represent chlorine atoms.
Claim 10
Dependent Claim
23 words
An N-(salicyloylamino)imide of claim 1, in which one of R 1 -R 4 represents a carboxyl group and the others represent hydrogen atoms.
References Cited (Backward Citations)
US3882138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |