US4009324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photodegradable polyolefin composition containing an N-halo lactam
Assignee: United States Department of Agriculture
•
Filing: 1976-04-02
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Granted: 1977-02-22
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Expires: 1996-04-02
Abstract
Abstract Polyolefins capable of photodegradation are prepared by incorporating in the polyolefin an additive which contains chlorine, bromine, or iodine directly linked to the nitrogen atom of an amide or imide group.
Inventors
- 👤 Bernard Freedman
- 👤 Martin J. Diamond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:34
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
46 words
A photodegradable composition comprising a polyolefin and about from 0.1 to 10%, based on the weight of polyolefin, of an additive of the structure ##STR17## wherein X is chlorine, bromine, or iodine, and R" is a divalent aliphatic hydrocarbon radical containing 1 to 12 carbon atoms.
Claim 2
Dependent Claim
46 words
A photodegradable composition comprising a polyolefin and about from 0.1 to 10%, based on the weight of polyolefin, of an additive of the structure ##STR17## wherein X is chlorine, bromine, or iodine, and R" is a divalent aliphatic hydrocarbon radical containing 1 to 12 carbon atoms.
Claim 3
Dependent Claim
10 words
The composition of claim 1 wherein the additive is N-bromocaprolactam.
References Cited (Backward Citations)
US3865767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |