US3894881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition
Assignee: Toray Industries Inc
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Filing: 1973-02-14
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Granted: 1975-07-15
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Expires: 1993-02-14
Abstract
Abstract A coating composition, particularly for plastic substrates, providing improved surface properties such as scratch resistance, comprises a mixture of a separately hydrolyzed silicon tetraalkoxide, a separately hydrolyzed silicious compound, and a metal salt.
Inventors
- 👤 Masaharu Suzuki
- 👤 Takashi Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:07
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; C08; C08K; C08K3/00; C08K3/18; C08K3/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
158 words
A COATING COMPOSITION WHICH UPON HEATING PRODUCES A CURED COATING HAVING IMPROVED SURFACE PROPERTIES, SAID COMPOSITION CONTAINING A MIXTURE OF SEPARATELY HYDROLYZED COMPOUNDS CONTAINING SILICON COMPRISING, A. ABOUT 10 - 200 PARTS BY WEIGHT OF A SEPARATELY HYDROLYZED SILICON TETRAALKOXIDE, CONTAINING ALKOXY GROUPS HAVING FROM 1 - 5 CARBON ATOMS, B. MIXED WITH 100 PARTS BY WEIGHT OF A SEPARATELY HYDROLYZED SILICEOUS COMPOUND REPRESENTED BY THE FORMULA R SI (OR'')3, WHEREIN R REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKENYL GROUPS EACH OF WHICH CONTAINS 1 - 3 CARBON ATOMS, AND R'' REPRESENTS AN ALKYL GROUP CONTAINING 1 - 5 CARBON ATOMS, AND C. ABOUT 0.01 - 10 PARTS BY WEIGHT, ON THE BASIS OF 100 PARTS BY WEIGHT OF THE MIXTURE OF (A) AND (B), OF AT LEAST ONE METAL SALT, SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI CARBOXYLATE (CONTAINING 1 - 5 CARBON ATOMS), THIOCYANATE, NITRITE, ALUMINATE AND CARBONATE.
Claim 2
Dependent Claim
158 words
A COATING COMPOSITION WHICH UPON HEATING PRODUCES A CURED COATING HAVING IMPROVED SURFACE PROPERTIES, SAID COMPOSITION CONTAINING A MIXTURE OF SEPARATELY HYDROLYZED COMPOUNDS CONTAINING SILICON COMPRISING, A. ABOUT 10 - 200 PARTS BY WEIGHT OF A SEPARATELY HYDROLYZED SILICON TETRAALKOXIDE, CONTAINING ALKOXY GROUPS HAVING FROM 1 - 5 CARBON ATOMS, B. MIXED WITH 100 PARTS BY WEIGHT OF A SEPARATELY HYDROLYZED SILICEOUS COMPOUND REPRESENTED BY THE FORMULA R SI (OR'')3, WHEREIN R REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKENYL GROUPS EACH OF WHICH CONTAINS 1 - 3 CARBON ATOMS, AND R'' REPRESENTS AN ALKYL GROUP CONTAINING 1 - 5 CARBON ATOMS, AND C. ABOUT 0.01 - 10 PARTS BY WEIGHT, ON THE BASIS OF 100 PARTS BY WEIGHT OF THE MIXTURE OF (A) AND (B), OF AT LEAST ONE METAL SALT, SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI CARBOXYLATE (CONTAINING 1 - 5 CARBON ATOMS), THIOCYANATE, NITRITE, ALUMINATE AND CARBONATE.
Claim 3
Dependent Claim
14 words
The coating composition of claim 1 wherein the hydrolyzed silicon tetraalkoxide is silicon tetrabutoxide.
Claim 4
Dependent Claim
22 words
The coating composition of claim 1 wherein the hydrolyzed siliceous compound represented by the formula R Si (OR'')3 is methyl trimethoxy silane.
Claim 5
Dependent Claim
15 words
The coating composition of claim 1 wherein the metal salt is an alkali metal carboxylate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |