US3928265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lacquer systems which are harmless to the environment
Assignee: Bayer AG
•
Filing: 1974-08-07
•
Granted: 1975-12-23
•
Expires: 1994-08-07
Abstract
Abstract Object of the invention are stoving lacquer systeme which are harmless to the environment and which are based on mixtures of high-molecular weight polyesters containing hydroxyl groups and optionally carboxyl groups, monomolecular polyfunctional hydroxyl compounds and melamine resins. These lacquer systeme will be applied solvent-free or at least with a low solvent content.
Inventors
- 👤 Rolf Dhein
- 👤 Bernd-Ulrich Kaiser
- 👤 Hans Rudolph
- 👤 Rolf Kuchenmeister
- 👤 Clemens Niehaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:00
CPC Classifications
C; C09; C09D; C09D167/00; C08; C08L; C08L67/00; C09D167/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
125 words
A COMPOSITION COMPRISING (A) A MELAMINE FORMALDEHYDE CONDENSATION RESIN, (B) AN ALKYL RESIN HAVING A MOLECULAR WEIGHT BETWEEN 1500 AND 500, AN ACID NUMBER BETWEEN 4 AND 40 AND A HYDROXY NUMBER BETWEEN 40 AND 140 AND (C) A HYDROXYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, DIETHYLENE GLYCOL, GLYCEROL, BIS-GLYCOL ADIPATE AND CASTOR OIL, COMPONENT (B) BEING PRSENT IN AN AMOUNT OF 80 TO 95% BY WEIGHT, BASED ON THE COMBINED WEIGHT OF (B) AND (C), COMPONENT (C) BEING PRESENT IN AN AMOUNT OF 5 TO 20%, BASED ON THE COMBINED WEIGHT OF (B) AND (C), AND COMPONENT (A) BEING PRESENT IN AN AMOUNT OF 20 TO 30 PARTS BY WEIGHT FOR EVERY 100 PARTS BY WEIGHT OF SAID CO,POSITION.
Claim 2
Dependent Claim
125 words
A COMPOSITION COMPRISING (A) A MELAMINE FORMALDEHYDE CONDENSATION RESIN, (B) AN ALKYL RESIN HAVING A MOLECULAR WEIGHT BETWEEN 1500 AND 500, AN ACID NUMBER BETWEEN 4 AND 40 AND A HYDROXY NUMBER BETWEEN 40 AND 140 AND (C) A HYDROXYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, DIETHYLENE GLYCOL, GLYCEROL, BIS-GLYCOL ADIPATE AND CASTOR OIL, COMPONENT (B) BEING PRSENT IN AN AMOUNT OF 80 TO 95% BY WEIGHT, BASED ON THE COMBINED WEIGHT OF (B) AND (C), COMPONENT (C) BEING PRESENT IN AN AMOUNT OF 5 TO 20%, BASED ON THE COMBINED WEIGHT OF (B) AND (C), AND COMPONENT (A) BEING PRESENT IN AN AMOUNT OF 20 TO 30 PARTS BY WEIGHT FOR EVERY 100 PARTS BY WEIGHT OF SAID CO,POSITION.
Claim 3
Dependent Claim
15 words
The composition of claim 1 wherein said alkyd resin is modified with a fatty acid.
Claim 4
Dependent Claim
37 words
The composition of claim 1 wherein component (B) is an alkyd resin having an oil content between 18 and 50% by weight, an acid number between 15 and 30 and a hydroxyl number between 60 and 100.
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein component (C) is castor oil, propylene glycol or a mixture thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |