US3714090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature polyester coating composition
Assignee: Whittaker Corp
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Filing: 1971-03-22
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Granted: 1973-01-30
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Expires: 1991-03-22
Abstract
Abstract A polyester coating composition is produced by heating a reaction mixture comprising (a) 17-24 percent by weight of a fatty acid, (b) 30-42 percent of a polyol moiety consisting of 45-70 percent of a triol with the remainder being diol, and (c) 40-56 percent of a polycarboxylic acid moiety consisting of 83-93 percent of an aromatic polycarboxylic acid with the remainder being an aliphatic polycarboxylic acid, to a temperature, generally between 400* and 480*F, and for a time sufficient to esterify the reactants. Preferably, this coating composition is reacted with an aminoplast resin to cause cross-linking to produce a hard, flexible paint which is capable of withstanding high temperatures without noticeable discoloration and which is particularly useful for coil coating.
Inventors
- 👤 E Lasher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:40
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C09; C09D; C09D167/00; C09D167/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
136 words
The polyester resin obtained by the esterification of: a. a fatty acid having from 10 to 26 carbon atoms in an amount by weight between about 17 percent and about 24 percent of the total weight of (a), (b) and (c); b. a polyol moiety in an amount by weight between about 30 percent and about 42 percent, said polyol moiety consisting of between about 45 percent and about 70 percent by weight of a triol with the remainder being diol; and c. a polycarboxylic acid moiety in an amount by weight between about 40 percent and about 56 percent, said polycarboxylic acid moiety consisting of between about 83 percent and about 93 percent by weight of an aromatic polycarboxylic acid with the remainder being an aliphatic polycarboxylic acid having from three to 18 carbon atoms.
Claim 2
Dependent Claim
136 words
The polyester resin obtained by the esterification of: a. a fatty acid having from 10 to 26 carbon atoms in an amount by weight between about 17 percent and about 24 percent of the total weight of (a), (b) and (c); b. a polyol moiety in an amount by weight between about 30 percent and about 42 percent, said polyol moiety consisting of between about 45 percent and about 70 percent by weight of a triol with the remainder being diol; and c. a polycarboxylic acid moiety in an amount by weight between about 40 percent and about 56 percent, said polycarboxylic acid moiety consisting of between about 83 percent and about 93 percent by weight of an aromatic polycarboxylic acid with the remainder being an aliphatic polycarboxylic acid having from three to 18 carbon atoms.
Claim 3
Dependent Claim
35 words
The polyester resin of claim 1 which has a Gardner-Holdt viscosity of at least J at a 50 percent solids concentration in xylene and which has a solids acid number of less than about 10.
Claim 4
Dependent Claim
12 words
The polyester resin of claim 1 wherein said fatty acid is saturated.
Claim 5
Dependent Claim
26 words
The polyester resin of claim 3 wherein said triol is selected from the group consisting of glycerine, trimethylol ethane, trimethylol propane, trimethylol butane, hexanetriol and pentanetriol.
Claim 6
Dependent Claim
44 words
The polyester resin of claim 4 wherein said diol is selected from the group consisting of ethylene glycol, 1,2- and 1,3 propylene glycol,1,3- and 1,4-butylene glycol, 1,5-pentane diol, 1,6- hexane diol, cyclohexane dimethanol, 2-ethyl, 2-methyl, 1,3-propane diol, neopentyl glycol, diethylene glycol and dipropylene glycol.
Claim 7
Dependent Claim
37 words
The polyester resin of claim 5 wherein said aromatic dicarboxylic acid is selected from the group consisting of orthophthalic acid, isophthalic acid, terephthalic acid, endomethylene tetrahydrophthalic acid, and 1,4-, 1,8-, and 2,3-naphthalene dicarboxylic acids or anhydrides thereof.
Claim 8
Dependent Claim
42 words
The polyester resin of claim 6 wherein said aliphatic dicarboxylic acid is selected from the group consisting of malonic acid, succinic acid, glutaric aciD, adipic acid, suberic acid, azelaic acid, trimethyl adipic acid, sebacic acid and dodecenyl succinic acid or anhydrides thereof.
Claim 9
Dependent Claim
39 words
The high temperature-resisting coating composition obtained by the reaction of the polyester resin of claim 1 with an aminoplast resin in an amount less than about 20 percent by weight of the weight of said polyester and aminoplast resins.
References Cited (Backward Citations)
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US3223658A
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US3325428A
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US3467610A
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US3557691A
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US3575901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |