US4022742A
Expired / Lapsed
US
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Coating composition
Assignee: Daikin Industries Ltd
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Filing: 1975-05-27
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Granted: 1977-05-10
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Expires: 1995-05-27
Abstract
Abstract A coating composition comprising a fluororesin and a chelate compound of a transition element of Group IV in the periodic table in an aqueous medium, which can assure a firm adhesiveness to a substrate while maintaining advantageous properties inherent to the fluororesin.
Inventors
- 👤 Tatsushiro Yoshimura
- 👤 Seisuke Suzue
- 👤 Shigetake Tominaga
- 👤 Mutsusuke Namba
- 👤 Toshio Mizuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:43
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
A coating composition for formation of an undercoating film upon baking, which comprises a fluororesin having a particle size of 0.1 to 50 μ, a chelate compound prepared by reacting a water-soluble salt or alkoxide of a transition element of Group IV in the Periodic Table with a chelating agent and an inorganic, water-insoluble, fireproof material durable under the sintering temperature of the fluororesin in an aqueous medium containing a surfactant, said chelate compound forming an oxide of the transition element upon baking, the amount of the oxide of the transition element so formed being from 10 to 80% by weight based on the combined amount of said fluororesin and said transition element oxide.
Claim 2
Dependent Claim
114 words
A coating composition for formation of an undercoating film upon baking, which comprises a fluororesin having a particle size of 0.1 to 50 μ, a chelate compound prepared by reacting a water-soluble salt or alkoxide of a transition element of Group IV in the Periodic Table with a chelating agent and an inorganic, water-insoluble, fireproof material durable under the sintering temperature of the fluororesin in an aqueous medium containing a surfactant, said chelate compound forming an oxide of the transition element upon baking, the amount of the oxide of the transition element so formed being from 10 to 80% by weight based on the combined amount of said fluororesin and said transition element oxide.
Claim 3
Dependent Claim
99 words
The coating composition according to claim 1, wherein the chelate compound is prepared by reacting an alkoxide of the formula Me(OR) x , wherein Me is a transition element of Group IV in the Periodic Table, R is an alkyl group having 1 to 10 carbon atoms, and x is a number corresponding to the atomic valency of the transition element, with a chelating agent in an amount of at least 1 mole per 1 mole of the alkoxide so as to eliminate about 65 to 95% by weight of the by-produced alcohol from the reaction mixture by distillation.
Claim 4
Dependent Claim
38 words
The coating composition according to claim 1, wherein the surfactant is a member selected from the group consisting of alkylbenzenesulfonic acid and salts thereof, naphthalenesulfonic acid and salts thereof, dialkylsulfosuccinic acid and salts thereof and alkyl sulfate derivatives.
Claim 5
Dependent Claim
15 words
The coating composition according to claim 1, wherein said transition element is titanium or zirconium.
Claim 6
Dependent Claim
57 words
The coating composition according to claim 1, wherein the oxide of the transition element formed upon baking is represented by MeOy, Me being the transition element and y being the atomic valency of the transition element Me/2, and wherein the amounts of said chelate compound and fluoresin in said composition are defined by the following formulae: ##EQU3##
Claim 7
Dependent Claim
22 words
The coating composition according to claim 5, wherein the amount of surfactant in said composition is defined by the following formula: ##EQU4##
Claim 8
Dependent Claim
19 words
The coating composition according to claim 2, wherein R is an alkyl group having 3 to 7 carbon atoms.
Claim 9
Dependent Claim
56 words
A method for forming an undercoating film on a substrate which assures the firm bonding of a top coating film comprising a fluororesin thereto, which comprises applying the coating composition according to claim 1 onto the substrate, and drying and heating said composition at a temperature higher than the melting point of the fluororesin contained therein.
References Cited (Backward Citations)
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US3486911A
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US3772249A
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US3692727A
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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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |