US3624232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable powder coating composition comprising a mixture of an alkoxylated polyamine-aldehyde resin and a polyester resin
Assignee: Individual
•
Filing: 1970-01-26
•
Granted: 1971-11-30
•
Expires: 1990-01-26
Abstract
Abstract Curable powder coating resin compositions comprise a small proportion of an alkoxylated polyamine-aldehyde resin and a polyester resin having an acid number below 20, a melting point between 60* and 130* C., the acid component comprising a dibasic aromatic carboxylic acid and the alcohol component comprising diols such as 2,2-di(4-beta-hydroxyethoxy-phenyl-) propane, certain glycidyl esters and certain dihydric aliphatic alcohols. The curable powder-coating composition is applied to a substrate by a powder-coating process and the coated substrate is heated to a temperature of from 120* to 220* C. for 10 to 60 minutes.
Inventors
- 👤 Cornelis Van Dorp
- 👤 Nantko Kloos
- 👤 Frits Visser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:44
CPC Classifications
C; C09; C09D; C09D167/00; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/40; C08G63/42; C08G63/66; C08G63/668; C08G63/672
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
A curable coating composition, as claimed in claim 1 in which the alcohol component (a) comprises from 0 to 100 mole percent (based on the total alcohol component of the polyester) of an alcohol having the general formula: in which R1 and R2 represent alkylene groups having from two to three carbon atoms, R3 represents an alkylidene group having three carbon atoms, x and y are numerals each being at least one, the sum of x and y being not greater than six and R4 and R5 represent hydrogen atoms.
Claim 2
Dependent Claim
125 words
A curable coating composition as claimed in claim 1 in which the alcohol component of the polyester comprises: a. from 0 to 100 mole percent (based on the total alcohol component of the polyester) of a compound selected from the polyoxyethylene and polyoxypropylene ethers of 4,4-isopropylidene diphenol, wherein both phenolic groups are oxyalkenylated and the average number of oxyalkenyl groups is from two to six; b. from 0 to 40 mole percent (based on the total alcohol component of the polyester) of a glycidyl ester having the general formula: in which R is a branched chain saturated alkyl group having from four to ten carbon atoms, and c. from 5 to 100 mole percent (based on the total alcohol component of the polyester) of 2,2-dimethylpropanediol-1,3.
Claim 3
Dependent Claim
19 words
A curable coating composition, as claimed in claim 1 in which the alkoxylated polyamine-aldehyde resin comprises methoxylated melamine-formaldehyde resin.
Claim 4
Dependent Claim
19 words
A curable coating composition, as claimed in claim 2 in which the alkoxylated polyamine-aldehyde resin comprises methoxylated melamine-formaldehyde resin.
Claim 5
Dependent Claim
19 words
A curable coating composition, as claimed in claim 3 in which the alkoxylated polyamine-aldehyde resin comprises methoxylated melamine-formaldehyde resin.
Claim 6
Dependent Claim
52 words
A process for the preparation of coated substrates, in which a coating composition, comprising the curable coating composition as claimed in claim 1 is applied to a substrate by a powder-coating process and the coated substrate is heated to a temperature of from 120* to 220* C. for 10 to 60 minutes.
Claim 7
Dependent Claim
52 words
A process for the preparation of coated substrates, in which a coating composition, comprising the curable coating composition as claimed in claim 2 is applied to a substrate by a powder-coating process and the coated substrate is heated to a temperature of from 120* to 220* C. for 10 to 60 minutes.
Claim 8
Dependent Claim
52 words
A process for the preparation of coated substrates, in which a coating composition, comprising the curable coating composition as claimed in claim 3 is applied to a substrate by a powder-coating process and the coated substrate is heated to a temperature of from 120* to 220* C. for 10 to 60 minutes.
References Cited (Backward Citations)
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US3337486A
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US3291858A
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US3382295A
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US3410926A
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US3538186A
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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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |