US4212955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degradable plastic composition containing ortho ester
Assignee: OI Glass Inc
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Filing: 1978-01-19
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Granted: 1980-07-15
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Expires: 1998-01-19
Abstract
Abstract There is disclosed an environmentally degradable plastic composition comprising an organic polymeric material having dispersed therein at least one trialkyl ortho ester as a readily autoxidizable organic substance.
Inventors
- 👤 John W. Tobias
- 👤 Lynn J. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; Y; Y10; Y10S; Y10S260/00; Y10S260/43; Y10S521/00; Y10S521/916
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
30 words
As a composition of matter, an environmentally degradable plastic composition comprising an organic polymeric material having dispersed therein at least one trialkyl ortho ester as a readily autoxidizable organic substance.
Claim 2
Dependent Claim
30 words
As a composition of matter, an environmentally degradable plastic composition comprising an organic polymeric material having dispersed therein at least one trialkyl ortho ester as a readily autoxidizable organic substance.
Claim 3
Dependent Claim
31 words
The invention of claim 1 wherein the degradable plastic composition comprises 50 to 99.9% by weight of the organic polymeric material and 50 to 0.1% by weight of the autoxidizable substance.
Claim 4
Dependent Claim
26 words
The invention of claim 1 wherein the degradable plastic composition comprises 99 to 95% by weight low-density polyethylene and 1 to 5% by weight triallyl orthoformate.
Claim 5
Dependent Claim
24 words
The invention of claim 1 wherein the plastic composition also contains 0.001 to 0.05% by weight antioxidant based on the weight of the polymer.
Claim 6
Dependent Claim
24 words
The invention of claim 3 wherein the plastic composition also contains 0.001 to 0.05% by weight antioxidant based on the weight of the polyethylene.
Claim 7
Dependent Claim
10 words
The invention of claim 5 wherein the antioxidant is tetrakis[methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)]methane.
Claim 8
Dependent Claim
15 words
The invention of claim 1 wherein the degradable plastic composition also contains a blowing agent.
Claim 9
Dependent Claim
14 words
The invention of claim 1 wherein the organic polymeric material is a hydrocarbon polymer.
Claim 10
Dependent Claim
18 words
The invention of claim 8 wherein the hydrocarbon polymer is selected from polyethylene, polypropylene, poly (4-methyl-1-pentene) and polystyrene.
Claim 11
Dependent Claim
20 words
As an article of manufacture, a plastic body of predetermined form and comprising the composition of matter of claim 1.
Claim 12
Dependent Claim
29 words
The invention of claim 10 wherein the plastic body comprises 50 to 99.9% by weight of the organic polymer and 50 to 0.1% by weight of the autoxidizable substance.
Claim 13
Dependent Claim
25 words
The invention of claim 10 wherein the plastic body comprises 99 to 95% by weight low-density polyethylene and 1 to 5% by weight triallyl orthoformate.
Claim 14
Dependent Claim
17 words
The invention of claim 10 wherein the article is a plastic secondary wrap for a container package.
Claim 15
Dependent Claim
16 words
The invention of claim 10 wherein the article is of a foamed or cellular plastic body.
Claim 16
Dependent Claim
13 words
The invention of claim 10 wherein the organic polymer is a hydrocarbon polymer.
Claim 17
Dependent Claim
18 words
The invention of claim 15 wherein the hydrocarbon polymer is selected from polyethylene, polypropylene, poly (4-methyl-1-pentene), and polystyrene.
Claim 18
Dependent Claim
50 words
A process for preparing an environmentally degradable plastic composition which comprises preparing a composition comprising an organic polymeric material having dispersed therein at least one trialkyl ortho ester as a readily autoxidizable organic substance and subsequently subjecting the prepared composition in the form of an article to an oxidizing environment.
Claim 19
Dependent Claim
50 words
A process for preparing an environmentally degradable plastic composition which comprises preparing a composition comprising an organic polymeric material having dispersed therein at least one trialkyl ortho ester as a readily autoxidizable organic substance and subsequently subjecting the prepared composition in the form of an article to an oxidizing environment.
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) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |