US4661262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for deactivation of uncured paint
Assignee: Individual
•
Filing: 1986-03-31
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Granted: 1987-04-28
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Expires: 2006-03-31
Abstract
Abstract The invention herein involves the capture and treatment of excess uncured paint which is produced during spray painting operations. In particular, the invention relates to alkyl sulfate-based compositions which detackify excess spray paint, a method for utilizing these compositions in paint spray booth operations and a method for removing uncured paint from coated surfaces.
Inventors
- 👤 Konstantine Cost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:02
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; C09; C09D; C09D7/00; C09D7/71; Y; Y10; Y10S; Y10S210/00; Y10S210/93
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
108 words
A method of detackifying uncured, solvent-based paint, which comprises: (a) preparing an aqueous alkyl sulfate-based solution containing from about 0.01 percent to about 0.15 percent by weight of an amphipathic alkyl sulfate having from about eight to about eighteen carbon atoms, from about 0.1 to about 0.6 percent by weight ammonium alum and from about 0.1 to about 0.6 percent by weight potassium bicarbonate; (b) circulating said amphipathic alkyl sulfate solution in a spray booth, water-wall; and, (c) capturing and detackifying said paint in said aqueous amphipathic alkyl sulfate solution circulating in said spray booth, water-wall, such that the detackified paint floats to the top of the solution.
Claim 2
Independent Claim
108 words
A method of detackifying uncured, solvent-based paint, which comprises: (a) preparing an aqueous alkyl sulfate-based solution containing from about 0.01 percent to about 0.15 percent by weight of an amphipathic alkyl sulfate having from about eight to about eighteen carbon atoms, from about 0.1 to about 0.6 percent by weight ammonium alum and from about 0.1 to about 0.6 percent by weight potassium bicarbonate; (b) circulating said amphipathic alkyl sulfate solution in a spray booth, water-wall; and, (c) capturing and detackifying said paint in said aqueous amphipathic alkyl sulfate solution circulating in said spray booth, water-wall, such that the detackified paint floats to the top of the solution.
Claim 3
Dependent Claim
40 words
The invention recited in claim 1, wherein said amphipathic alkyl sulfate solution contains from about 0.01 to about 0.15 by weight of an amphipathic alkyl sulfate and from about 0.1 percent to about 1 percent by weight of sodium bicarbonate.
Claim 4
Dependent Claim
39 words
The invention recited in claim 1, wherein said amphipathic alkyl sulfate is selected from the group consisting of sodium octyl sulfate, sodium decyl sulfate, sodium dodecyl sulfate, sodium tetradecyl sulfate, sodium hexadecyl sulfate, sodium octadecyl sulfate and combinations thereof.
Claim 5
Dependent Claim
28 words
The method of claim 1, wherein said aqueous amphipathic alkyl sulfate solution also contains from about 0.05 percent to about 0.5 percent by weight of a sodium orthosilicate.
Claim 6
Dependent Claim
24 words
The method of claim 1, further comprising the step of separating said detackified paint from said aqueous amphipathic alkyl sulfate solution after step (c).
Claim 7
Dependent Claim
49 words
The method of claim 1, wherein said aqueous amphipathic alkyl sulfate solution further includes from about 0.01 percent to about 0.001 percent by weight of a water conditioner selected from the group consisting of sodium tripolyphosphate, tribasic sodium phosphate and anhydrous sodium metasilicate to precipitate aluminum out of solution.
Claim 8
Dependent Claim
49 words
The method of claim 3, wherein said aqueous amphipathic alkyl sulfate solution further includes from about 0.01 percent to about 0.001 percent by weight of a water conditioner selected from the group consisting of sodium tripolyphosphate, tribasic sodium phosphate and anhydrous sodium metasilicate to precipitate aluminum out of solution.
Claim 9
Dependent Claim
49 words
The method of claim 4, wherein said aqueous amphipathic alkyl sulfate solution further includes from about 0.01 percent to about 0.001 percent by weight of a water softener selected from the group consisting of sodium tripolyphosphate, tribasic sodium phosphate and anhydrous sodium metasilicate to precipitate aluminum out of solution.
Claim 10
Dependent Claim
26 words
The method of claim 1, further comprising the step of controlling the excessive foaming of said circulating amphipathic alkyl sulfate solution with a suitable defoaming composition.
Claim 11
Dependent Claim
61 words
A composition for detackifying uncured, solvent-based, thermosetting paint, which comprises an aqueous solution containing from about 0.01 percent to about 30 percent by weight of an amphipathic alkyl sulfate having from about eight to about eighteen carbon atoms, from about 0.1 to about 0.6 percent by weight ammonium alum and from about 0.1 to about 0.6 percent by weight potassium bicarbonate.
Claim 12
Dependent Claim
61 words
A composition for detackifying uncured, solvent-based, thermosetting paint, which comprises an aqueous solution containing from about 0.01 percent to about 30 percent by weight of an amphipathic alkyl sulfate having from about eight to about eighteen carbon atoms, from about 0.1 to about 0.6 percent by weight ammonium alum and from about 0.1 to about 0.6 percent by weight potassium bicarbonate.
Claim 13
Dependent Claim
19 words
The composition of claim 10, further containing from about 0.1 percent to about 1 percent by weight sodium bicarbonate.
Claim 14
Dependent Claim
19 words
The composition of claim 10, further containing from about 0.05 percent to about 0.5 percent by weight sodium orthosilicate.
Claim 15
Dependent Claim
42 words
The composition of claim 11, further containing from about 0.01 percent to about 0.001 percent by weight of a water conditioner selected from the group consisting of sodium tripolyphosphate, tribasic sodium phosphate and anhydrous sodium metasilicate to precipitate aluminum out of solution.
Claim 16
Dependent Claim
42 words
The composition of claim 10, further containing from about 0.01 percent to about 0.001 percent by weight of a water conditioner selected from the group consisting of sodium tripolyphosphate, tribasic sodium phosphate and anhydrous sodium metasilicate to precipitate aluminum out of solution.
Claim 17
Dependent Claim
42 words
The composition of claim 12, further containing from about 0.01 percent to about 0.001 percent by weight of a water conditioner selected from the group consisting of sodium tripolyphosphate, tribasic sodium phosphate and anhydrous sodium metasilicate to precipitate aluminum out of solution.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |