US3600266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color stabilized polyvinyl chloride polyurethane compositions
Assignee: Air Products and Chemicals Inc
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Filing: 1968-06-26
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Granted: 1971-08-17
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Expires: 1988-06-26
Abstract
Abstract PLASTIC PRODUCTS WHEREIN A TERTIARY AMINE CATALYZED SEMIRIGID POLYURETHANE FOAM JUXTAPOSES A LAYER OF NON-POROUS POLYVINYL CHLORIDE ARE SAFEGUARDED AGAINST STAINING OF THE POLYVINYL CHLORIDE LAYER BY THE INCORPORATION IN THE POLYURETHANE OF A SLIGHTLY VOLATILE HALOGEN-CONTAINING COMPOUND WHICH MAY BE ADDED IN AN APPROPRIATE ADJUVANT. ADDITIONALLY, METHODS OF MAKING SUCH FOAMS AND PRECURSOR COMPOSITIONS FOR THE FOAMS ARE DISCLOSED.
Inventors
- 👤 Elwood E Huntzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:18
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; B; B32; B32B; B32B27/00; B32B27/06; B32B27/065; B32B27/30; B32B27/304; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4804; C08G18/4812; C08G18/482; C08G18/4829; C08G18/487; C08G18/4883; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614; C08G18/7621; C08K; C08K5/00; C08K5/02; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L75/00; C08L75/04; B32B2250/00; B32B2250/02; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/50; B32B2307/554; B32B2307/70; C08G2101/00; C08J2375/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |