US3355313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rendering thermoplastic material anti-fogging and resultant article
Assignee: WR Grace and Co
•
Filing: 1964-08-24
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Granted: 1967-11-28
•
Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 Frank E Eastes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:20
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/044; C08J7/048; C08J7/052; C08J7/054; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; C08J2427/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR IMPROVING THE ANTIFOGGING CHARACTERISTICS OF POLYETHYLENE FILM COMPRISING: (A) SUBJECTING AT LEAST ONE SURFACE OF SAID FILM TO CORONA DISCHARGE TREATMENT, (B) DISSOLVING 0.01 TO 0.5 WEIGHT PERCENT OF A SODIUM DIESTER OF SULFOSUCCINIC ACID AND 0.05 TO 0.75 WEIGHT PERCENT OF GLYCERYL MANNITAN LAURATE IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF ALKYL ALCOHOLS AND ALKYL ACETATES HAVING 2 TO 5 CARBON ATOMS PER MOLECULE TO FORM SOLUTION A, THE RATIO OF THE LATTER TO THE FORMER BEING 10:1 TO 1:1, (C) UNIFORMLY DISPERSING 0.05 TO 290 WEIGHT PERCENT FINELY DIVIDED POLYVINYL CHLORIDE IN SOLUTION A TO FORM SOLUTION B, (D) COATING THE CORONA TREATED FILM SURFACE WITH SOLUTION B, AND (E) REMOVING SUBSTANTIALLY ALL OF SAID SOLVENT FROM SAID COATING BY DRYING.
Claim 2
Dependent Claim
128 words
A PROCESS FOR IMPROVING THE ANTIFOGGING CHARACTERISTICS OF POLYETHYLENE FILM COMPRISING: (A) SUBJECTING AT LEAST ONE SURFACE OF SAID FILM TO CORONA DISCHARGE TREATMENT, (B) DISSOLVING 0.01 TO 0.5 WEIGHT PERCENT OF A SODIUM DIESTER OF SULFOSUCCINIC ACID AND 0.05 TO 0.75 WEIGHT PERCENT OF GLYCERYL MANNITAN LAURATE IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF ALKYL ALCOHOLS AND ALKYL ACETATES HAVING 2 TO 5 CARBON ATOMS PER MOLECULE TO FORM SOLUTION A, THE RATIO OF THE LATTER TO THE FORMER BEING 10:1 TO 1:1, (C) UNIFORMLY DISPERSING 0.05 TO 290 WEIGHT PERCENT FINELY DIVIDED POLYVINYL CHLORIDE IN SOLUTION A TO FORM SOLUTION B, (D) COATING THE CORONA TREATED FILM SURFACE WITH SOLUTION B, AND (E) REMOVING SUBSTANTIALLY ALL OF SAID SOLVENT FROM SAID COATING BY DRYING.
References Cited (Backward Citations)
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US2648097A
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US3048266A
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US3222191A
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |