US4276390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-spraying coating
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1980-02-08
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Granted: 1981-06-30
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Expires: 2000-02-08
Abstract
Abstract A powdered composition comprising (1) an organic polyisocyanate blocked with ethyleneimine and (2) a partially hydrolyzed product of an ethylene-vinyl ester copolymer and/or a carboxyl-modified-product of said partially hydrolyzed product exhibits exceedingly good levelling and post-curing characteristics and is advantageously flame-sprayed to give a coating film having good weatherability, heat resistance and chemical resistance.
Inventors
- 👤 Masamitsu Nakabayashi
- 👤 Fumihiro Doura
- 👤 Teruo Hori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:40
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6212; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/807; C08G2150/00; C08G2150/20; Y; Y10; Y10S; Y10S528/00; Y10S528/902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A powdered composition for flame-spraying coating, which comprises (1) an organic polyisocyanate blocked with ethyleneimine and (2) a partially hydrolyzed product of an ethylene-vinyl ester copolymer and/or a carboxyl modified product of said hydrolyzed product the proportions of said components being 0.01 to 1 mole of the isocyanate group of component (1) to each 1.0 mole of the hydroxyl group contained in component (2).
Claim 2
Dependent Claim
64 words
A powdered composition for flame-spraying coating, which comprises (1) an organic polyisocyanate blocked with ethyleneimine and (2) a partially hydrolyzed product of an ethylene-vinyl ester copolymer and/or a carboxyl modified product of said hydrolyzed product the proportions of said components being 0.01 to 1 mole of the isocyanate group of component (1) to each 1.0 mole of the hydroxyl group contained in component (2).
Claim 3
Dependent Claim
47 words
A powdered composition as claimed in claim 1, wherein the partially hydrolyzed product is one having a vinyl ester unit content of 1.1 to 48.1% by weight, vinyl alcohol unit content of 0.1 to 25.5% by weight and ethylene unit content of 50.6 to 96.8% by weight.
Claim 4
Dependent Claim
47 words
A powdered composition as claimed in claim 1, wherein the partially hydrolyzed product is one having a vinyl ester unit content of 1.5 to 33.3% by weight, vinyl alcohol unit content of 1.0 to 21.6% by weight and ethylene unit content of 55.4 to 96.7% by weight.
Claim 5
Dependent Claim
23 words
A powdered composition as claimed in claim 1, wherein the partially hydrolyzed product is one having a melt index of 5 to 200.
Claim 6
Dependent Claim
45 words
A powdered composition as claimed in claim 1, wherein the carboxyl-modified-product is one obtained by reacting with the partially hydrolyzed product a carboxyl-group containing unsaturated compound or a cyclic acid anhydride in a proportion of 0.1 to 15% by weight against the partially hydrolyzed product.
Claim 7
Dependent Claim
19 words
A powdered composition as claimed in claim 4, wherein the cyclic acid anhydride is maleic anhydride or phthalic anhydride.
Claim 8
Dependent Claim
17 words
A powdered composition as claimed in claim 4, wherein the carboxyl-group containing unsaturated compound is acrylic acid.
References Cited (Backward Citations)
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US2703794A
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US3348997A
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US3400173A
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US4101473A
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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) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |