Patent US4097452A successfully refreshed from Google Patents.
US4097452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
14-Substituted 7,15-diazadispiro- 5.1.5.3!-hexadecanes as UV stabilizers
Assignee: Hoechst AG
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Filing: 1977-02-16
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Granted: 1978-06-27
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Expires: 1997-02-16
Abstract
Abstract By incorporating a substituted diazadispiro-hexadecane into a plastic composition the heat and light stability of this composition is considerably increased.
Inventors
- 👤 Norbert Mayer
- 👤 Gerhard Pfahler
- 👤 Hartmut Wiezer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3462; C08K5/3465
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
40 words
Process of stabilizing an organic polymer against decomposition by light and heat, which comprises adding to the polymer 0.1 - 5% by weight thereof of a stabilizer of the formula ##STR3## wherein X is ═ O, ═ NH or ##STR4##
Claim 2
Dependent Claim
40 words
Process of stabilizing an organic polymer against decomposition by light and heat, which comprises adding to the polymer 0.1 - 5% by weight thereof of a stabilizer of the formula ##STR3## wherein X is ═ O, ═ NH or ##STR4##
Claim 3
Dependent Claim
46 words
Process of stabilizing an organic polymer against decomposition by light and heat, which comprises adding to the polymer 0.1 - 5% by weight thereof of a stabilizer of the formula ##STR5## wherein X is ═ O, ═ NH or ##STR6## and a conventional organic polymer stabilizer.
Claim 4
Dependent Claim
46 words
Process of stabilizing an organic polymer against decomposition by light and heat, which comprises adding to the polymer 0.1 - 5% by weight thereof of a stabilizer of the formula ##STR5## wherein X is ═ O, ═ NH or ##STR6## and a conventional organic polymer stabilizer.
Claim 5
Dependent Claim
10 words
Process of claim 1 wherein the polymer is a polyolefin.
Claim 6
Dependent Claim
11 words
Process of claim 1 wherein the polymer is a chlorine-containing polyolefin.
Claim 7
Dependent Claim
43 words
Plastics compositions consisting of a polyolefin, a chlorine-containing polyolefin, a polyacetal, polyester, polyurethane or epoxy resin and as stabilizer 0.1 - 5% by weight of the polymer of a compound of the formula ##STR7## wherein X is ═ O, ═ NH or ##STR8##
Claim 8
Dependent Claim
43 words
Plastics compositions consisting of a polyolefin, a chlorine-containing polyolefin, a polyacetal, polyester, polyurethane or epoxy resin and as stabilizer 0.1 - 5% by weight of the polymer of a compound of the formula ##STR7## wherein X is ═ O, ═ NH or ##STR8##
Claim 9
Dependent Claim
10 words
Composition of claim 5 wherein the polymer is a polyolefin.
Claim 10
Dependent Claim
11 words
Composition of claim 5 wherein the polymer is a chlorine-containing polyolefin.
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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |