Patent US4220567A successfully refreshed from Google Patents.
US4220567A
Expired / Lapsed
US
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Stabilizing pigmented lacquers with zeolites
Assignee: Bayer AG
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Filing: 1978-05-30
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Granted: 1980-09-02
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Expires: 1998-05-30
Abstract
Abstract A lacquer comprising an organic binder, at least one pigment or filler, and a zeolite in an amount sufficient to increase the dispersibility of the pigment or filler. Advantageously the pigment is at least one of titanium dioxide, iron oxide and mixed-phase rutile, and the binder is a polyester. Desirably the pigment is present in from about 1 to 5% by volume of the pigment plus any filler and its average particle size is from about 1 to 3 μm.
Inventors
- 👤 Friedrich Kindervater
- 👤 Gunter Ulisch
- 👤 Theodor Bohmann
- 👤 Manfred Mengel
- 👤 Lothar Puppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:08
CPC Classifications
C; C09; C09D; C09D7/00; C09D7/40; C09D7/45; Y; Y10; Y10S; Y10S260/00; Y10S260/33
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
42 words
A lacquer comprising a saturated polyester, at least one pigment or filler, and a crystalline zeolite in an amount sufficient to increase the dispersibility of the pigment or filler, the zeolite having an average particle size of about 0.5 to 5 μm.
Claim 2
Dependent Claim
42 words
A lacquer comprising a saturated polyester, at least one pigment or filler, and a crystalline zeolite in an amount sufficient to increase the dispersibility of the pigment or filler, the zeolite having an average particle size of about 0.5 to 5 μm.
Claim 3
Dependent Claim
25 words
A lacquer according to claim 1, wherein the zeolite is present in from about 0.1 to 10% by volume of any pigment plus filler present.
Claim 4
Dependent Claim
12 words
A lacquer according to claim 1, wherein the zeolite is a faujasite.
Claim 5
Dependent Claim
12 words
A lacquer according to claim 1, wherein the zeolite is zeolite A.
Claim 6
Dependent Claim
20 words
A lacquer according to claim 1, containing at least one of titanium dioxide, iron oxide and mixed-phase rutile as pigment.
Claim 7
Dependent Claim
40 words
A lacquer according to claim 5, wherein the zeolite is a faujasite, is present in from about 1 to 5% by volume of the pigment plus any filler and its average particle size is from about 1 to 3 μm.
References Cited (Backward Citations)
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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) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |