US4633008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-oxidant phenol derivatives
Assignee: Mitsubishi Chemical Corp
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Filing: 1984-02-29
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Granted: 1986-12-30
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Expires: 2004-02-29
Abstract
Abstract A phenol derivative represented by the formula <IMAGE> wherein R1 is a secondary or tertiary hydrocarbon residue of having 3 to 8 carbon atoms, R2 is a hydrocarbon residue having 1 to 12 carbon atoms, X is <IMAGE> wherein R3, R4 and R5 each is an alkylene group having 1 to 4 carbon atoms, Z is an n-valent group and n is an integer of 1 to 8. This compound is effective to prevent the oxidation of organic materials.
Inventors
- 👤 Akiyoshi Oonishi
- 👤 Kenji Tanaka
- 👤 Makoto Tadeka
- 👤 Kazuhiko Konno
- 👤 Masaki Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:08
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07C; C07C323/00; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
10 words
A phenol derivative having one of the following formulae: ##STR20##
Claim 2
Dependent Claim
10 words
A phenol derivative having one of the following formulae: ##STR20##
Claim 3
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR21##
Claim 4
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR22##
Claim 5
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR23##
Claim 6
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR24##
Claim 7
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR25##
Claim 8
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR26##
Claim 9
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR27##
Claim 10
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR28##
Claim 11
Dependent Claim
18 words
A phenol derivative as claimed in claim 1, wherein said phenol derivative is represented by the formula ##STR29##
References Cited (Backward Citations)
US4293472A
Cited
US4241217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |