US3637553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of homogeneous thermoplastic and highly elastic plastics from vinyl chloride polymers and polyurethanes
Assignee: Bayer AG
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Filing: 1969-09-24
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Granted: 1972-01-25
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Expires: 1989-09-24
Abstract
Abstract POLYVINVYL CHLORIDE STABILIZERS ARE READILY AND ACCEPTABLY INTRODUCED INTO VINYL OR VINYLIDENE CHLORIDE POLYMER/ POLYURETHANE MIXTURES BY USING POLYURETHANE DISPERSIONS CONTAINING POLYVINYL CHLORIDE STABLIZERS EITHER IN SOLUTION OR IN FINE DISTRIBUTION IN THE DISCRETE POLYURETHANE DISPERSION PARTICLES TO PREPARE THE VINYL CHLORIDE POLYMER/ POLYURETHANE PLASTICS MIXTURES FROM VINYL CHLORIDE POLYMER DISPERSIONS AND POLYURETHANE DISPERSIONS, BY ADMIXTURE AND CO-COAGULATION.
Inventors
- 👤 Wolfgang Keberle
- 👤 Wilhelm Gobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:29
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |