Patent US2728736A successfully refreshed from Google Patents.
US2728736A
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Organosilicon compositions containing zirconium compound and leather treated with same
Assignee: Dow Silicones Corp
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Filing: 1954-06-21
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Granted: 1955-12-27
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Hunter
- 👤 Charles F Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:20
CPC Classifications
C; C14; C14C; C14C9/00; Y; Y10; Y10T; Y10T428/00; Y10T428/4935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A COMPOSITION OF MATTER COMPRISING A MIXTURE OF (1) FROM 15 TO 50% BY WEIGHT OF A ZIRCONIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM COMPOUNDS HAVING THE GENERAL FORMULA ZR(OR)4 AND ALIPHATIC HYDROCARBON SOLUBLE PARTIAL HYDROLYZATES THEREOF IN WHICH COMPOUNDS R IS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBON RADICALS OF LESS THAN 13 CARBON ATOMS AND HYDROXYLATED ALIPHATIC HYDROCARBON RADICALS OF LESS THAN 13 CARBON ATOMS AND CONTAINING LESS THAN 4 HYDROXYL RADICALS; (2) FROM 5 TO 70% BY WEIGHT OF A METHYLPOLYSILOXANE COPOLYMER COMPOSED ESSENTIALLY OF TRIMETHYLSILOXANE UNITS AND SIO2 UNITS, SAID UNITS BEING IN SUCH PROPORTION THAT THE RATIO OF METHYL RADICALS TO SI AOTMS IS FROM 1:1 TO 2.5:1 AND (3) 15 TO 80% BY WEIGHT OF A POLYSILOXANE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
130 words
A COMPOSITION OF MATTER COMPRISING A MIXTURE OF (1) FROM 15 TO 50% BY WEIGHT OF A ZIRCONIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM COMPOUNDS HAVING THE GENERAL FORMULA ZR(OR)4 AND ALIPHATIC HYDROCARBON SOLUBLE PARTIAL HYDROLYZATES THEREOF IN WHICH COMPOUNDS R IS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBON RADICALS OF LESS THAN 13 CARBON ATOMS AND HYDROXYLATED ALIPHATIC HYDROCARBON RADICALS OF LESS THAN 13 CARBON ATOMS AND CONTAINING LESS THAN 4 HYDROXYL RADICALS; (2) FROM 5 TO 70% BY WEIGHT OF A METHYLPOLYSILOXANE COPOLYMER COMPOSED ESSENTIALLY OF TRIMETHYLSILOXANE UNITS AND SIO2 UNITS, SAID UNITS BEING IN SUCH PROPORTION THAT THE RATIO OF METHYL RADICALS TO SI AOTMS IS FROM 1:1 TO 2.5:1 AND (3) 15 TO 80% BY WEIGHT OF A POLYSILOXANE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2670303A
Cited
US2672455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |