US3048496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finished leathers having coatings of a polymer of 55-80 percent vinylidene chloride and 20-45 percent (c-c4)-alkyl acrylate, and production thereof
Assignee: Rohm and Haas Co
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Filing: 1959-12-09
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Granted: 1962-08-07
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Expires: 1979-12-09
Abstract
No abstract record available.
Inventors
- 👤 Peter R Buechler
- 👤 Benjamin B Kine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:31
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/267; C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/08; C14; C14C; C14C11/00; C14C11/003; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A METHOD OF PRODUCING A FINISHEE LEATHER HAVING A DURABLE, WATER-CONSISTANT, WASHABLE, ABRASION-RESISTANT FINISH, AND HAVING OUTSTANDING WET-MOLDING PROPERTIES WHICH CONSISTS OF THE APPLICATION OF FILM-FORMING MATERIALS IN THE FORM OF EMULSION POLYMERS EXCLUSIVELY AND COMPRISES THE STEPS OF APPLYING AN AQUEOUS DISPERSION CONTAINING 1 TO 30% BY WEIGHT OF A CRYSTALLINE COPOLYMER OF 55 TO 80% BY WEIGHT OF VINYLIDENE CHLORIDE WITH 20 TO 45% BY WEIGHT OF AN ESTER ACID WITH A LOWER ALKANOL HAVING 1 TO 4 CARBON ATOMS, DRYING SAID COATED LEATHER AT A TEMPERATURE OF 50* TO 110* C. IN A PERIOD OF 10 SECONDS TO 10 MINUTES, THEREAFTER APPLYING A SECOND COATING OF AN AQUEOUS DISPERSION CONTAINING 10 TO 40% BY WEIGHT OF A CRYSTALLINE COPOLYMER OF 55 TO 80% BY WEIGHT OF VINYLIDENE CHLORIDE WITH 20 TO 45% BY WEIGHT OF AN ESTER OF ACRYLIC ACID WITH A LOWER ALKANOL HAVING 1 TO 4 CARBON ATOMS.
Claim 2
Independent Claim
153 words
A METHOD OF PRODUCING A FINISHEE LEATHER HAVING A DURABLE, WATER-CONSISTANT, WASHABLE, ABRASION-RESISTANT FINISH, AND HAVING OUTSTANDING WET-MOLDING PROPERTIES WHICH CONSISTS OF THE APPLICATION OF FILM-FORMING MATERIALS IN THE FORM OF EMULSION POLYMERS EXCLUSIVELY AND COMPRISES THE STEPS OF APPLYING AN AQUEOUS DISPERSION CONTAINING 1 TO 30% BY WEIGHT OF A CRYSTALLINE COPOLYMER OF 55 TO 80% BY WEIGHT OF VINYLIDENE CHLORIDE WITH 20 TO 45% BY WEIGHT OF AN ESTER ACID WITH A LOWER ALKANOL HAVING 1 TO 4 CARBON ATOMS, DRYING SAID COATED LEATHER AT A TEMPERATURE OF 50* TO 110* C. IN A PERIOD OF 10 SECONDS TO 10 MINUTES, THEREAFTER APPLYING A SECOND COATING OF AN AQUEOUS DISPERSION CONTAINING 10 TO 40% BY WEIGHT OF A CRYSTALLINE COPOLYMER OF 55 TO 80% BY WEIGHT OF VINYLIDENE CHLORIDE WITH 20 TO 45% BY WEIGHT OF AN ESTER OF ACRYLIC ACID WITH A LOWER ALKANOL HAVING 1 TO 4 CARBON ATOMS.
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) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |