US3797690A
Expired / Lapsed
US
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Preparation of degradable polymeric material
Assignee: OI Glass Inc
•
Filing: 1971-12-08
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Granted: 1974-03-19
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Expires: 1991-12-08
Abstract
Abstract There is disclosed the preparation of a degradable polymeric material by applying a degradation-sensitizing reagent to the surface of a polymeric material and then diffusing the reagent into such surface.
Inventors
- 👤 L Taylor
- 👤 J Tobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0033; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; Y; Y10; Y10S; Y10S220/00; Y10S220/30; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1341; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
The process of claim 1 wherein the polymeric material is selected from polyethylene, polypropylene, poly(4-methyl-1-pentene), polystyrene, and polyvinylchloride.
Claim 2
Dependent Claim
24 words
The process of claim 1 wherein the degradation-sensitizing reagent is selected from free-radical initiating reagents, metallo-organic autoxidation catalysts, readily autoxidized organic compounds, and photosensitizers.
Claim 3
Dependent Claim
32 words
The process of claim 1 wherein the degradation-sensitizing reagent is selected from organic peroxides, organic hydroperoxides, organic azo compounds, metallo-organic compounds, organic materials which undergo facile autoxidation, organic photosensitizers, and organic dyes.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein the diffusing of the reagent is accomplished by the application of heat.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein the reagent is applied as a continuous layer to the surface.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein the polymeric material is in the geometric shape of a container.
Claim 7
Dependent Claim
17 words
As an article of manufacture, a degradable polymeric substrate having a degradation-sensitizing reagent diffused into its surface.
Claim 8
Dependent Claim
11 words
The invention of claim 8 wherein the substrate is a container.
Claim 9
Dependent Claim
18 words
The invention of claim 9 wherein the polymeric material is selected from polyethylene, polypropylene, poly(4-methyl-1-pentene), polystyrene, and polyvinylchloride.
References Cited (Backward Citations)
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US3454510A
Cited
US3551235A
Cited
US3619245A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |