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US4042765A
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Photodegradable plastic compositions containing nitrogen heterocyclic compounds
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1976-10-28
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Granted: 1977-08-16
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Expires: 1996-10-28
Abstract
Abstract Plastic compositions containing polyolefins and substituted nitrogen heterocyclic compounds having the formula: <IMAGE> wherein X is nitrogen or CH, and R1, R2, R3 and R4 are from the group hydrogen; a straight or branched chain alkyl group having from 1 to 6 carbon atoms; cyano; nitro; lower alkoxy; fluorine, dialkylamino, phenyl, halo-phenyl, benzyl and halo-benzyl, have been found to be photodegradable plastic materials for use, for example, as wrapping films and agricultural mulching films.
Inventors
- 👤 Joseph C. Floyd
- 👤 Don A. Plank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/0008; C08K5/0033; C08K5/3442; C08K5/3462; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
78 words
A plastic composition containing polyolefin having incorporated therein an effective amount of a photodegradation accelerating agent which is a substituted nitrogen heterocyclic compound having the formula: ##STR5## wherein X is nitrogen or CH, and R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrogen; a straight or branched chain alkyl group having from 1 to 6 carbon atoms; cyano, nitro; lower alkoxy; fluorine, dialkylamino; phenyl; halo-phenyl; benzyl; or halo-benzyl.
Claim 2
Dependent Claim
78 words
A plastic composition containing polyolefin having incorporated therein an effective amount of a photodegradation accelerating agent which is a substituted nitrogen heterocyclic compound having the formula: ##STR5## wherein X is nitrogen or CH, and R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrogen; a straight or branched chain alkyl group having from 1 to 6 carbon atoms; cyano, nitro; lower alkoxy; fluorine, dialkylamino; phenyl; halo-phenyl; benzyl; or halo-benzyl.
Claim 3
Dependent Claim
12 words
The composition as set forth in claim 1 wherein X is nitrogen.
Claim 4
Dependent Claim
23 words
The composition of claim 1 wherein at least one of R 1 , R 2 , R 3 and R 4 is phenyl.
Claim 5
Dependent Claim
36 words
The composition of claim 1 wherein at least one of R 1 , R 2 , R 3 and R 4 is a straight or branched chain alkyl group having from 1 to 6 carbon atoms.
Claim 6
Dependent Claim
25 words
The composition of claim 1 wherein at least one of R 1 , R 2 , R 3 and R 4 is --CH 3 .
Claim 7
Dependent Claim
47 words
The composition of claim 1 wherein X is nitrogen and at least one of R 1 , R 2 , R 3 and R 4 is phenyl and at least one of R 1 , R 2 , R 3 and R 4 is --CH 3 .
Claim 8
Dependent Claim
14 words
The composition of claim 1 wherein said nitrogen heterocyclic compound has the formula: ##STR6##
Claim 9
Dependent Claim
9 words
The composition of claim 7 wherein X is nitrogen.
Claim 10
Dependent Claim
10 words
The composition of claim 7 wherein R 2 is phenyl.
Claim 11
Dependent Claim
12 words
The composition of claim 7 wherein R 3 is --CH 3 .
Claim 12
Dependent Claim
14 words
The composition of claim 7 wherein X is nitrogen and R 2 is phenyl.
Claim 13
Dependent Claim
16 words
The composition of claim 7 wherein X is nitrogen and R 3 is --CH 3 .
Claim 14
Dependent Claim
20 words
The composition of claim 7 wherein X is nitrogen, R 2 is phenyl and R 3 is --CH 3 .
Claim 15
Dependent Claim
13 words
The composition of claim 13 wherein R 1 and R 4 are hydrogen.
Claim 16
Dependent Claim
30 words
The composition of claim 1 wherein the accelerating agent is present in an amount of about 0.01 to about 5.0% by weight based on a total weight of the composition.
Claim 17
Dependent Claim
24 words
The composition of claim 7 wherein X is nitrogen, R 2 is phenyl and R 1 , R 3 and R 4 are hydrogen.
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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |