Patent US3867337A successfully refreshed from Google Patents.
US3867337A
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Triazine derivatives as antioxidants
Assignee: Novartis Corp
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Filing: 1973-03-15
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Granted: 1975-02-18
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Expires: 1993-03-15
Abstract
Abstract New 2,4 bis-(3,5-di-tert.butyl-4-hydroxy-phenoxy)-s-triazines are stabilizers for organic materials. They are prepared by reacting the bis-(imino-carbonic acid-(3,5-di-tert.butyl-4hydroxyphenyl)ester)-imide with a corresponding carboxylic acid chloride.
Inventors
- 👤 Heimo Brunetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
23 words
A COMPOSITION OF MATTER COMPRISING AN ORGANIC POLYMER AND, IN AN AMOUNT OF 0.01 TO 5% BY WEIGHT, A COMPOUND OF FORMULA 1
Claim 2
Dependent Claim
23 words
A COMPOSITION OF MATTER COMPRISING AN ORGANIC POLYMER AND, IN AN AMOUNT OF 0.01 TO 5% BY WEIGHT, A COMPOUND OF FORMULA 1
Claim 3
Dependent Claim
19 words
A composition of matter according to claim 1, wherein said R1 is thiaalkyl with 5 to 14 carbon atoms.
Claim 4
Dependent Claim
14 words
A composition of matter according to claim 1 wherein said polymer is a polyolefin.
Claim 5
Dependent Claim
13 words
A composition of matter according to claim 3, wherein said polyolefin is polypropylene.
Claim 6
Dependent Claim
22 words
A composition of matter according to claim 1, wherein said compound is present in an amount of 0.05 to 1.5% by weight.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |