US3876582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stoving lacquers which can be diluted with water
Assignee: Bayer AG
•
Filing: 1973-05-21
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Granted: 1975-04-08
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Expires: 1993-05-21
Abstract
Abstract Object of the invention are binders based on amine salts of polyesters from polyhydric alcohols and at least three different dicarboxylic acids, the dicarboxylic acids consisting of 1.1 to 55 mol percent of a mixture of maleic acid and tetrahydrophthalic acid and of 98.9 to 45 mol percent of at least one further dicarboxylic acid. These binders are suitable for "coil-coating" and give even at temperatures above 250.degree.C very glossy, white, elastic and hard coatings.
Inventors
- 👤 Bernd-Ulrich Kaiser
- 👤 Rolf Dhein
- 👤 Rolf Kuchenmeister
- 👤 Jochen Schoeps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:25
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G63/553
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
A POLYESTER WHICH COMPRISES THE CONDENSATION PRODUCT OF A DIHYDRIC ALIPHATIC OR CYCLOALIPHATIC ALCOHOL HAVING 2 TO 15 CARBON ATOMS AND AT LEAST 3 DICARBOXYLIC ACIDS, SAID DICARBOXYLIC ACIDS CONSISTING OF (A) FROM 1.1 TO 55 MOL% OF MALEIC ACID AND TETRAHYDOPHTHALIC ACID IN A MOLAR RATIO OF 1:1 TO 1:100 AND (B) FROM 98.9 TO 45 MOL% OF AT LEAST ONE AROMATIC, CYCLOALIPHATIC OR ALIPHATIC DICARBOXYLIC ACID HAVING 4 TO 12 CARBON ATOMS, SAID POLYESTER HAVING AN ACID NUMBER GREATER THAN 35 AND A HYDROXYL NUMBER OF 50 TO 150.
Claim 2
Dependent Claim
91 words
A POLYESTER WHICH COMPRISES THE CONDENSATION PRODUCT OF A DIHYDRIC ALIPHATIC OR CYCLOALIPHATIC ALCOHOL HAVING 2 TO 15 CARBON ATOMS AND AT LEAST 3 DICARBOXYLIC ACIDS, SAID DICARBOXYLIC ACIDS CONSISTING OF (A) FROM 1.1 TO 55 MOL% OF MALEIC ACID AND TETRAHYDOPHTHALIC ACID IN A MOLAR RATIO OF 1:1 TO 1:100 AND (B) FROM 98.9 TO 45 MOL% OF AT LEAST ONE AROMATIC, CYCLOALIPHATIC OR ALIPHATIC DICARBOXYLIC ACID HAVING 4 TO 12 CARBON ATOMS, SAID POLYESTER HAVING AN ACID NUMBER GREATER THAN 35 AND A HYDROXYL NUMBER OF 50 TO 150.
Claim 3
Dependent Claim
25 words
The polyester of claim 1 wherein there is from 5 to 25 mol % of (a) and from 95 to 75 mol % of (b).
Claim 4
Dependent Claim
20 words
The polyester of claim 1 wherein said molar ratio of maleic acid to tetrahydrophthalic acid is from 2 to 25.
Claim 5
Dependent Claim
23 words
The polyester of claim 1 wherein (b) is selected from the group consisting of phthalic acid, isophthalic acid, adipic acid and mixtures thereof.
Claim 6
Dependent Claim
13 words
The polyester of claim 1 having an acid number of 38 to 60.
Claim 7
Dependent Claim
19 words
The polyester of claim 1 having incorporated therein by condensation up to 40 mol % of a monocarboxylic acid.
Claim 8
Dependent Claim
22 words
The polyester of claim 1 having incorporated therein by condensation up to 20 mol % of a tribasic or tetrabasic carboxylic acid.
Claim 9
Dependent Claim
9 words
An amine salt of the polyester of claim 1.
Claim 10
Dependent Claim
20 words
The amine salt of claim 8 wherein said amine is selected from the group consisting of triethylamine, diethanolamine and dimethylethanolamine.
References Cited (Backward Citations)
US3324084A
Cited
US3326860A
Cited
US3530202A
Cited
US3533999A
Cited
US3560445A
Cited
US3674727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |