US2748027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing of vinylidene chloride copolymer surfaces
Assignee: EIDP Inc
•
Filing: 1953-05-29
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Granted: 1956-05-29
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Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Meier John Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:38
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J7/052; C08J2427/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A PROCESS FOR IMPROVING THE SURFACE CHARACTERISTICS OF REGENERATED CELLULOSE FILM COATED WITH A PROTECTIVE COATING OF A COPOLYMER OF VINYLIDENE CHLORIDE AND AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER POLYMERIZABLE WITH VINYLIDENE CHLORIDE, SAID COPOLYMER CONTAINING NOT LESS THAN 75% VINYLIDENE CHLORIDE WHICH CONSISTS IN SPRAYING SAID COATED FILM WITH AN AQUEOUS DISPERSION CONTAINING FROM 0.5% TO 20% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF DISPERSION, OF PARTICLES OF A COPOLYMER OF VINYLIDENE CHLORIDE AND AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER POLYMERIZABLE WITH VINYLIDENE CHLORIDE SAID COPOLYMER CONTAINING NOT LESS THAN 75% VINYLIDENE CHLORIDE, AND THEREAFTER DRYING THE RESULTING SPRAYED FILM, THE AMOUNT OF DISPERSION SPRAYED BEING SUFFICIENT TO DEPOSIT FROM 0.025 TO 0.1 GRAM OF SOLIDS PER SQUARE METER OF FILM SURFACE PER SIDE, THE SPRAY BEING OF SUCH FINENESS AND DRYING BEING UNDER SUCH CONDITIONS AS TO FORM ON THE FILM DEPOSITED PARTICLES HAVING AN AVERAGE PARTICLE DIAMETER OF 25 MICRONS AND A RANGE OF FROM 10 TO 50 MICRONS IN DIAMETER.
Claim 2
Dependent Claim
165 words
A PROCESS FOR IMPROVING THE SURFACE CHARACTERISTICS OF REGENERATED CELLULOSE FILM COATED WITH A PROTECTIVE COATING OF A COPOLYMER OF VINYLIDENE CHLORIDE AND AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER POLYMERIZABLE WITH VINYLIDENE CHLORIDE, SAID COPOLYMER CONTAINING NOT LESS THAN 75% VINYLIDENE CHLORIDE WHICH CONSISTS IN SPRAYING SAID COATED FILM WITH AN AQUEOUS DISPERSION CONTAINING FROM 0.5% TO 20% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF DISPERSION, OF PARTICLES OF A COPOLYMER OF VINYLIDENE CHLORIDE AND AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER POLYMERIZABLE WITH VINYLIDENE CHLORIDE SAID COPOLYMER CONTAINING NOT LESS THAN 75% VINYLIDENE CHLORIDE, AND THEREAFTER DRYING THE RESULTING SPRAYED FILM, THE AMOUNT OF DISPERSION SPRAYED BEING SUFFICIENT TO DEPOSIT FROM 0.025 TO 0.1 GRAM OF SOLIDS PER SQUARE METER OF FILM SURFACE PER SIDE, THE SPRAY BEING OF SUCH FINENESS AND DRYING BEING UNDER SUCH CONDITIONS AS TO FORM ON THE FILM DEPOSITED PARTICLES HAVING AN AVERAGE PARTICLE DIAMETER OF 25 MICRONS AND A RANGE OF FROM 10 TO 50 MICRONS IN DIAMETER.
References Cited (Backward Citations)
US2633434A
Cited
US2541167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |