Patent US2868751A successfully refreshed from Google Patents.
US2868751A
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Method of curing silicone water repellents with cyclopentadienyl transition element catalysts and aqueous compositions of same
Assignee: Union Carbide Corp
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Filing: 1956-01-18
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Granted: 1959-01-13
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Expires: 1976-01-18
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Johnson
- 👤 Maurice H Jellinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD FOR CURING ORGANIC SOLVENT-SOLUBLE SILICONE WATER REPELLENTS SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL POLYSILOXANES AND LOWER ALKYL TRIS(2-METHOXYETHOXY) SILANES WHICH COMPRISES MIXING A BIS-CYCLOPENTADIENYL COMPOUND OF A D ORBITAL TRANSITION ELEMENT SELECTED FROM THE GROUP CONSISTING OF THE D ORBITAL TRANSITION ELEMENTS OF GROUP IVB OF THE PERIODIC TABLE OF THE ELEMENTS, IRON, AND COBALT WITH SAID SILICONE WATER REPELLENT, SAID BIS-CYCLOPENTADIENYL COMPOUND BEING ADDED IN AN AMOUNT SUFFICIENT TO GIVE A CONCENTRATION OF FROM 0.1 TO 10 PERCENT BY WEIGHT OF THE CONTAINED RESIN SOLIDS IN THE WATER REPELLENT OF THE TRANSITION ELEMENT PRESENT IN SAID BIS-CYCLOPENTADIENYL COMPOUND.
Claim 2
Independent Claim
103 words
THE METHOD FOR CURING ORGANIC SOLVENT-SOLUBLE SILICONE WATER REPELLENTS SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL POLYSILOXANES AND LOWER ALKYL TRIS(2-METHOXYETHOXY) SILANES WHICH COMPRISES MIXING A BIS-CYCLOPENTADIENYL COMPOUND OF A D ORBITAL TRANSITION ELEMENT SELECTED FROM THE GROUP CONSISTING OF THE D ORBITAL TRANSITION ELEMENTS OF GROUP IVB OF THE PERIODIC TABLE OF THE ELEMENTS, IRON, AND COBALT WITH SAID SILICONE WATER REPELLENT, SAID BIS-CYCLOPENTADIENYL COMPOUND BEING ADDED IN AN AMOUNT SUFFICIENT TO GIVE A CONCENTRATION OF FROM 0.1 TO 10 PERCENT BY WEIGHT OF THE CONTAINED RESIN SOLIDS IN THE WATER REPELLENT OF THE TRANSITION ELEMENT PRESENT IN SAID BIS-CYCLOPENTADIENYL COMPOUND.
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) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |