US4808231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibitive treatment for aluminum pigments
Assignee: Silberline Manufacturing Co Inc
•
Filing: 1988-02-05
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Granted: 1989-02-28
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Expires: 2008-02-05
Abstract
Abstract Organic phosphate or organic phosphite reagent compounds are employed to treat metallic particles, especially aluminum pigments, to protect their surfaces against chemical attack by water. Such treated particles are suitable for incorporation into aqueous-based coating systems.
Inventors
- 👤 Tom Kondis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:02
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/02; C09D5/024; C09D5/028; C09C; C09C1/00; C09C1/62; C09C1/64; C09C1/644; C09D5/38; C01; C01P; C01P2006/00; C01P2006/90
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
35 words
A coating composition comprising: metal pigment particles; a suitable aqueous-based carrier for forming a coating composition; and an organic phosphite present in an amount sufficient to inhibit reaction between the metal pigment particles and water.
Claim 2
Dependent Claim
35 words
A coating composition comprising: metal pigment particles; a suitable aqueous-based carrier for forming a coating composition; and an organic phosphite present in an amount sufficient to inhibit reaction between the metal pigment particles and water.
Claim 3
Dependent Claim
13 words
A composition as claimed in claim 1 wherein the metal particles are aluminum.
Claim 4
Dependent Claim
24 words
A paste as claimed in claim 2 wherein the organic phosphate compounds are present in the amount of 2%-15% by weight of metal present.
Claim 5
Dependent Claim
13 words
The composition of claim 1, wherein the organic phosphite is an alkyl-substituted phosphite.
Claim 6
Dependent Claim
30 words
The composition of claim 4, wherein the alkyl-substituted phosphite is at least one member selected from the group consisting of dilauryl hydrogen phosphite, dioctyl hydrogen phosphite and dioleyl hydrogen phosphite.
Claim 7
Dependent Claim
38 words
A paste useful for forming a coating composition when mixed with a suitable aqueous-based carrier, comprising: metal pigment particles; and an organic phosphite present in an amount sufficient to inhibit reaction between the metal pigment particles and water.
Claim 8
Dependent Claim
38 words
A paste useful for forming a coating composition when mixed with a suitable aqueous-based carrier, comprising: metal pigment particles; and an organic phosphite present in an amount sufficient to inhibit reaction between the metal pigment particles and water.
Claim 9
Dependent Claim
11 words
The paste of claim 6, wherein the metal particles are aluminum.
Claim 10
Dependent Claim
13 words
The paste of claim 6, wherein the organic phosphite is an alkyl-substituted phosphite.
Claim 11
Dependent Claim
30 words
The paste of claim 8, wherein the alkyl-substituted phosphite is at least one member selected from the group consisting of dilauryl hydrogen phosphite, dioctyl hydrogen phosphite and dioleyl hydrogen phosphite.
Claim 12
Dependent Claim
15 words
The paste of claim 3, wherein the amount is five to ten percent by weight.
References Cited (Backward Citations)
US4350535A
Cited
US4453982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |