US3941759A
Expired / Lapsed
US
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Degradable plastics containing dual-function additive system
Assignee: OI Glass Inc
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Filing: 1973-10-23
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Granted: 1976-03-02
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Expires: 1993-10-23
Abstract
Abstract There is disclosed a photoresistive plastic composition degradable by ultraviolet radiation, the composition comprising an organic polymeric material having dispersed therein a degradation controlling amount of an additive system consisting essentially of at least one organic photosensitizer and at least one organic derivative of a transition metal.
Inventors
- 👤 Lynn J. Taylor
- 👤 John W. Tobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:14
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/039; C; C08; C08J; C08J5/00; C08J5/18; C08K; C08K5/00; C08K5/0008; C08K5/0033; C08K5/04; C08K5/06; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
60 words
As a composition of matter, an organic polymeric material containing a degradation-controlling amount of an additive system consisting essentially of at least one organic photosensitizer selected from the group consisting of anthraquinone, 1-aminoanthraquinone, 2-aminoanthraquinone, 1-chloroanthraquinone, 2-chloroanthraquinone, 1-methyl anthraquinone, 2-methyl anthraquinone, 2-ethyl anthraquinone, 2-tert-butyl anthraquinone, 1-nitroanthraquinone, 2-phenylanthraquinone, 1,2-naphthoquinone, 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, 1,2-benzanthraquinone, 2,3-benzanthraquinone and phenanthrenequinone and at least one transition metal dialkyldithiocarbamate.
Claim 2
Dependent Claim
60 words
As a composition of matter, an organic polymeric material containing a degradation-controlling amount of an additive system consisting essentially of at least one organic photosensitizer selected from the group consisting of anthraquinone, 1-aminoanthraquinone, 2-aminoanthraquinone, 1-chloroanthraquinone, 2-chloroanthraquinone, 1-methyl anthraquinone, 2-methyl anthraquinone, 2-ethyl anthraquinone, 2-tert-butyl anthraquinone, 1-nitroanthraquinone, 2-phenylanthraquinone, 1,2-naphthoquinone, 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, 1,2-benzanthraquinone, 2,3-benzanthraquinone and phenanthrenequinone and at least one transition metal dialkyldithiocarbamate.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the transition metal is selected from the group consisting of cobalt, chromium, copper, iron, manganese and nickel.
Claim 4
Dependent Claim
22 words
The composition of claim 2 wherein the transition metal dialkyldithiocarbamate is selected from the group consisting of ferric dimethyldithiocarbamate and ferric di-n-butyldithiocarbamate.
Claim 5
Dependent Claim
24 words
The composition of claim 1 wherein the polymeric material is selected from the group consisting of polyethylene, polypropylene, poly(1-butene), poly (4-methyl-1-pentene), polystyrene and polyvinylchloride.
Claim 6
Dependent Claim
65 words
A process for preparing a degradable polymeric composition which comprises incorporating into a polymeric material a degradation-controlling amount of an additive system consisting essentially of at least one organic photosensitizer selected from the group consisting of anthraquinone, 1-aminoanthraquinone, 2-aminoanthraquinone, 1-chloroanthraquinone, 2-chloroanthraquinone, 1-methyl anthraquinone, 2-methyl anthraquinone, 2-ethyl anthraquinone, 2-tert-butyl anthraquinone, 1-nitroanthraquinone, 2-phenylanthraquinone, 1,2-naphthoquinone, 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, 1,2-benzanthraquinone, 2,3-benzanthraquinone and phenanthrenequinone and at least one transition metal dialkyldithiocarbamate.
Claim 7
Dependent Claim
65 words
A process for preparing a degradable polymeric composition which comprises incorporating into a polymeric material a degradation-controlling amount of an additive system consisting essentially of at least one organic photosensitizer selected from the group consisting of anthraquinone, 1-aminoanthraquinone, 2-aminoanthraquinone, 1-chloroanthraquinone, 2-chloroanthraquinone, 1-methyl anthraquinone, 2-methyl anthraquinone, 2-ethyl anthraquinone, 2-tert-butyl anthraquinone, 1-nitroanthraquinone, 2-phenylanthraquinone, 1,2-naphthoquinone, 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, 1,2-benzanthraquinone, 2,3-benzanthraquinone and phenanthrenequinone and at least one transition metal dialkyldithiocarbamate.
Claim 8
Dependent Claim
23 words
The process of claim 5 wherein the transition metal is selected from the group consisting of cobalt, chromium, copper, iron, manganese and nickel.
Claim 9
Dependent Claim
22 words
The process of claim 6 wherein the transition metal dialkyldithiocarbamate is selected from the group consisting of ferric dimethyldithiocarbamate and ferric di-n-butyldithiocarbamate.
Claim 10
Dependent Claim
23 words
The process of claim 5 wherein the polymeric material is selected from the group consisting of polyethylene, polypropylene, poly(1-butene), poly(4-methyl-1-pentene), poly-styrene and polyvinylchloride.
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) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |