US3854960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-fouling paints
Assignee: Bayer Pharma AG
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Filing: 1973-08-13
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Granted: 1974-12-17
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Expires: 1993-08-13
Abstract
Abstract Anti-fouling paints containing tributyl tin oxide as the antifouling agent wherein said tributyl tin oxide is present in the paint with colloidal silicic acid produced by the flame hydrolysis of silicon tetrachloride and/or montmorillonite modified with a quaternary ammonium salt.
Inventors
- 👤 H Plum
- 👤 F Runggas
- 👤 Haaren M Von
- 👤 H Krase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:11
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1612; C09D5/1625; C09D5/1631; C07; C07F; C07F7/00; C07F7/22; C07F7/2224
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
72 words
IN AN ANTI-FOULING PAINT COMPRISING TRIBUTYL TIN OXIDE AS THE ANTI-FOULING AGENT PRESENT IN A PAINT VEHICLE, THE IMPROVEMENT WHEREIN SAID TRIBUTYL TIN OXIDE IS PRESENT IN COMBINATION WITH FROM ABOUT 5 TO 50 PERCENT, BY WEIGHT OF SAID TRIBUTYL TIN OXIDE, OF AT LEAST ONE MEMBER SELECTED FROM YHE GROUP CONSISTING OF COLLODIAL SILICIC ACID PREPARED BY THE FLAME HYDROLYSIS OF SILICON TETRACHLORIDE AND MONTMORILLONITE MODIFIED WITH A QUATERNARY AMINE SALT.
Claim 2
Dependent Claim
72 words
IN AN ANTI-FOULING PAINT COMPRISING TRIBUTYL TIN OXIDE AS THE ANTI-FOULING AGENT PRESENT IN A PAINT VEHICLE, THE IMPROVEMENT WHEREIN SAID TRIBUTYL TIN OXIDE IS PRESENT IN COMBINATION WITH FROM ABOUT 5 TO 50 PERCENT, BY WEIGHT OF SAID TRIBUTYL TIN OXIDE, OF AT LEAST ONE MEMBER SELECTED FROM YHE GROUP CONSISTING OF COLLODIAL SILICIC ACID PREPARED BY THE FLAME HYDROLYSIS OF SILICON TETRACHLORIDE AND MONTMORILLONITE MODIFIED WITH A QUATERNARY AMINE SALT.
Claim 3
Dependent Claim
29 words
An anti-fouling paint as in claim 1 wherein said member is present in an amount from about 15 to about 35 percent by weight of said tributyl tin oxide.
Claim 4
Dependent Claim
29 words
An anti-fouling paint as in claim 1 wherein said tributyl tin oxide is present in combination with said colloidal silicic acid prepared by the flame hydrolysis of silicon tetrachloride.
Claim 5
Dependent Claim
25 words
An anti-fouling paint as in claim 1 wherein said tributyl tin oxide is present in combination with said montmorillonite modified with a quaternary amine salt.
References Cited (Backward Citations)
US2957785A
Cited
US3222158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |