US3862072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting aqueous coatings containing branched hydroxy functional polyester and hydroxy functional polyether or polyester adducts of an at least trifunctional alcohol
Assignee: DeSoto Inc
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Filing: 1973-10-23
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Granted: 1975-01-21
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Expires: 1993-10-23
Abstract
Abstract Thermosetting aqueous coatings are provided containing hydroxy functional polyesters based on tricarboxylic acids, such as trimellitic anhydride, reacted with excess diol to an acid number in the range of 45-60, formaldehyde condensates, and from 5-40%, based on total resin solids, of a polyether or polyester adduct of an at least trifunctional alcohol having a molecular weight of at least about 300. The polyether or polyester adduct lowers viscosity at high solids content while minimizing the need for volatile cosolvents, and it participates in the cure to increase the flexibility and impact resistance of the cured coating.
Inventors
- 👤 Kazys Sekmakas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:12
CPC Classifications
C; C09; C09D; C09D167/00
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
105 words
ESSENTIALLY OIL-FREE, NON-GELLED HYDROXY FUNCTIONAL ACIDIC POLYESTER FORMED BY POLYESTERIFYING A POLYCARBOXYLIC ACID COMPONENT, OF WHICH TRICARBOXYLIC ACID OR ANHYDRIDE THEREOF SELECTED FROM TRIMELLITIC OF ALPHA-(2CARBOXYETHYL)-GLUTARIC PROVIDES AT LEAST 70% OF THE ACIDIC FUNCTIONALITY, THE BALANCE BEING SATURATED DICARBOXYLIC ACID OR ANHYDRIDE, WITH A STOICHIOMETRIC EXCESS OF A POLYALCOHOL COMPONENT CONSISTING ESSENTIALLY OF ALIPHATIC DIOL, SAID POLYALCOHOL COMPONENT PROVIDING FROM 1.1 UP TO ABOUT 2 HYDROXY EQUIVALENTS PER EQUIVALENT OF CARBOXY IN SAID POLYCARBOXYLIC ACID COMPONENT, SAID POLYESTER HAVING AN ACID NUMBER IN THE RANGE OF FROM ABOUT 45 TO ABOUT 60 AND BEING DISPERSED IN THE AQUEOUS MEDIUM WITH THE AID OF A BASE;
Claim 2
Dependent Claim
105 words
ESSENTIALLY OIL-FREE, NON-GELLED HYDROXY FUNCTIONAL ACIDIC POLYESTER FORMED BY POLYESTERIFYING A POLYCARBOXYLIC ACID COMPONENT, OF WHICH TRICARBOXYLIC ACID OR ANHYDRIDE THEREOF SELECTED FROM TRIMELLITIC OF ALPHA-(2CARBOXYETHYL)-GLUTARIC PROVIDES AT LEAST 70% OF THE ACIDIC FUNCTIONALITY, THE BALANCE BEING SATURATED DICARBOXYLIC ACID OR ANHYDRIDE, WITH A STOICHIOMETRIC EXCESS OF A POLYALCOHOL COMPONENT CONSISTING ESSENTIALLY OF ALIPHATIC DIOL, SAID POLYALCOHOL COMPONENT PROVIDING FROM 1.1 UP TO ABOUT 2 HYDROXY EQUIVALENTS PER EQUIVALENT OF CARBOXY IN SAID POLYCARBOXYLIC ACID COMPONENT, SAID POLYESTER HAVING AN ACID NUMBER IN THE RANGE OF FROM ABOUT 45 TO ABOUT 60 AND BEING DISPERSED IN THE AQUEOUS MEDIUM WITH THE AID OF A BASE;
Claim 3
Dependent Claim
26 words
from 5% - 40%, based on total resin solids, of heat-hardening formaldehyde condensate dispersible in the aqueous medium and selected from aminoplasts and phenol-formaldehyde condensates; and
Claim 4
Dependent Claim
26 words
from 5% - 40%, based on total resin solids, of heat-hardening formaldehyde condensate dispersible in the aqueous medium and selected from aminoplasts and phenol-formaldehyde condensates; and
Claim 5
Dependent Claim
14 words
from 5% - 40%, based on total resin solids, of heat-hardening aminoplast resin; and
Claim 6
Dependent Claim
14 words
from 5% - 40%, based on total resin solids, of heat-hardening aminoplast resin; and
Claim 7
Dependent Claim
26 words
FROM 5% - 40%, BASED ON TOTAL RESIN SOLIDS, OF HEATHARDENING FORMALDEHYDE CONDENSATE DISPERSIBLE IN THE AQUEOUS MEDIUM AND SELECTED FROM AMINOPLASTS AND PHENOL-FORMALDEHYDE CONDENSATES; AND
Claim 8
Dependent Claim
26 words
FROM 5% - 40%, BASED ON TOTAL RESIN SOLIDS, OF HEATHARDENING FORMALDEHYDE CONDENSATE DISPERSIBLE IN THE AQUEOUS MEDIUM AND SELECTED FROM AMINOPLASTS AND PHENOL-FORMALDEHYDE CONDENSATES; AND
Claim 9
Dependent Claim
30 words
A coating composition as recited in claim 1 in which said tricarboxylic acid component is a monoanhydride used in an amount to provide at least 80% of the acidic functionality.
Claim 10
Dependent Claim
65 words
POLYETHER OR POLYESTER ADDUCT OF ETHYLENE OXIDE, 1,2 PROPYLENE OXIDE, OR A LACTONE CONTAINING 3-14 CARBON ATOMS WITH ALIPHATIC POLYHYDRIC ALCOHOL CONTAINING AT LEAST THREE HYDROXYL GROUPS, SAID ADDUCT HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 300 UP TO ABOUT 5000, SAID ADDUCT BEING PRESENT IN THE AQUEOUS MEDIUM IN AN AMOUNT OF FROM 5% -40%, BASED ON THE TOTAL RESIN SOLIDS.
Claim 11
Dependent Claim
65 words
POLYETHER OR POLYESTER ADDUCT OF ETHYLENE OXIDE, 1,2 PROPYLENE OXIDE, OR A LACTONE CONTAINING 3-14 CARBON ATOMS WITH ALIPHATIC POLYHYDRIC ALCOHOL CONTAINING AT LEAST THREE HYDROXYL GROUPS, SAID ADDUCT HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 300 UP TO ABOUT 5000, SAID ADDUCT BEING PRESENT IN THE AQUEOUS MEDIUM IN AN AMOUNT OF FROM 5% -40%, BASED ON THE TOTAL RESIN SOLIDS.
Claim 12
Dependent Claim
17 words
A coating composition as recited in claim 1 in which said tricarboxylic acid component is trimellitic anhydride.
Claim 13
Dependent Claim
64 words
polyether or polyester adduct of ethylene oxide, 1,2-propylene oxide, or a lactone containing 3-14 carbon atoms with aliphatic polyhydric alcohol containing at least three hydroxyl groups, said adduct having a molecular weight in the range of from about 300 up to about 5000, said adduct being present in the aqueous medium in an amount of from 5% - 40%, based on total resin solids.
Claim 14
Dependent Claim
64 words
polyether or polyester adduct of ethylene oxide, 1,2-propylene oxide, or a lactone containing 3-14 carbon atoms with aliphatic polyhydric alcohol containing at least three hydroxyl groups, said adduct having a molecular weight in the range of from about 300 up to about 5000, said adduct being present in the aqueous medium in an amount of from 5% - 40%, based on total resin solids.
Claim 15
Dependent Claim
64 words
polyether or polyester adduct of ethylene oxide, 1,2-propylene oxide, or a lactone containing 3-14 carbon atoms with aliphatic polyhydric alcohol containing three or four hydroxy groups, said adduct having a molecular weight in the range of from about 300 up to about 5,000, said adduct being present in the aqueous medium in an amount of from 5% - 40%, based on total resin solids.
Claim 16
Dependent Claim
64 words
polyether or polyester adduct of ethylene oxide, 1,2-propylene oxide, or a lactone containing 3-14 carbon atoms with aliphatic polyhydric alcohol containing three or four hydroxy groups, said adduct having a molecular weight in the range of from about 300 up to about 5,000, said adduct being present in the aqueous medium in an amount of from 5% - 40%, based on total resin solids.
Claim 17
Dependent Claim
15 words
A coating composition as recited in claim 1 in which said diol is a glycol.
Claim 18
Dependent Claim
23 words
A coating composition as recited in claim 3 in which said diol is 2,2-dimethyl-3-hydroxypropyl-2,2-dimethyl-3-hydroxy propionate and said formaldehyde condensate is an aminoplast resin.
Claim 19
Dependent Claim
22 words
A coating composition as recited in claim 1 in which said polycarboxylic acid component includes a minor proportion of saturated dicarboxylic acid.
Claim 20
Dependent Claim
26 words
A coating composition as recited in claim 1 in which the ratio of hydroxy equivalents to carboxy equivalents is in the range of 1.2:1 to 1.6:1.
Claim 21
Dependent Claim
33 words
A coating composition as recited in claim 1 in which said tricarboxylic acid is trimellitic anhydride and the ratio of hydroxy equivalents to carboxyl equivalents is in the range of 1.25:1 to 1.4:1.
Claim 22
Dependent Claim
40 words
A coating composition as recited in claim 1 in which the total solids content of said coating composition is at least about 60%, and there are at least 90 parts of water for every 10 parts of volatile organic solvent.
Claim 23
Dependent Claim
29 words
A coating composition as recited in claim 9 in which said base is a volatile nitrogenous base and the coating composition has a pH in the range of 6-11.
Claim 24
Dependent Claim
39 words
A coating composition as recited in claim 1 in which said heat-hardening formaldehyde condensate is an aminoplast resin present in an amount of from 10% - 30%, and said polyether adduct has a molecular weight less than about 3,000.
Claim 25
Dependent Claim
30 words
A coating composition as recited in claim 1 in which said polyether adduct is an adduct of 1,2-propylene oxide with an aliphatic polyhydric alcohol containing 3 or 4 hydroxyl groups.
Claim 26
Dependent Claim
29 words
A coating composition as recited in claim 1 in which said polyester adduct is an adduct of caprolactone with an aliphatic polyhydric alcohol containing 3 or 4 hydroxyl groups.
Claim 27
Dependent Claim
25 words
A coating composition as recited in claim 1 in which said adduct has a molecular weight in the range of about 400 to about 3,000.
Claim 28
Dependent Claim
39 words
Thermosetting aqueous coating composition having a total solids content of at least about 55% and comprising an aqueous medium containing at least 80 parts of water for every 20 parts of water-miscible volative organic solvent and having dispersed therein;
Claim 29
Dependent Claim
39 words
Thermosetting aqueous coating composition having a total solids content of at least about 55% and comprising an aqueous medium containing at least 80 parts of water for every 20 parts of water-miscible volative organic solvent and having dispersed therein;
Claim 30
Dependent Claim
47 words
A coating composition as recited in claim 15 in which the ratio of hydroxy equivalents to carboxy equivalents is in the range of 1.2;1 to 1.6:1 and said adduct is a polyether adduct of 1,2-propylene oxide with an aliphatic polyhydric alcohol containing 3 or 4 hydroxy groups.
References Cited (Backward Citations)
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US3352827A
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US3310512A
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US3631136A
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US3437618A
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US3624013A
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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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |