Patent US1844151A successfully refreshed from Google Patents.
Patent US4055404A successfully refreshed from Google Patents.
US4055404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for collecting paint spray mists in spray paint operation
Assignee: Individual
•
Filing: 1975-07-08
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Granted: 1977-10-25
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Expires: 1995-07-08
Abstract
Abstract An improvement in a process for the separation of aqueous paint spray mists from the environment of a paint spray operation employing a water rinse technique is described. According to the improvement, rinse water is mixed with a water-soluble, substantially non-volatile, low molecular weight, salt-like electrolyte in a quantity sufficient so that the specific weight of the aqueous salt solution at 20° C. is at least 1.01. The electrolyte solution causes the paint to coagulate from the water mixture for convenient separation by decantation, filtration, or the like.
Inventors
- 👤 Wolfgang Daimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:55
CPC Classifications
C; C09; C09D; C09D7/00; C09D7/71
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
In a process for the separation of spray mists of water dilutable paints from the environment of a paint spray operation employing a water rinse or wash technique, the improvement wherein in rinse or wash water used to rinse the spray shops and/or wash the spray mist is mixed with a water-soluble, substantially non-volatile, low molecular weight, salt-like electrolyte, said electrolyte being present in an amount sufficient to provide an aqueous salt solution which, at 20° C., has a specific weight of at least 1.01, causing paint to coagulate so as to permit separation from the rinse water in known manner.
Claim 2
Dependent Claim
101 words
In a process for the separation of spray mists of water dilutable paints from the environment of a paint spray operation employing a water rinse or wash technique, the improvement wherein in rinse or wash water used to rinse the spray shops and/or wash the spray mist is mixed with a water-soluble, substantially non-volatile, low molecular weight, salt-like electrolyte, said electrolyte being present in an amount sufficient to provide an aqueous salt solution which, at 20° C., has a specific weight of at least 1.01, causing paint to coagulate so as to permit separation from the rinse water in known manner.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein the specific weight of the aqueous salt solution is at least 1.10.
Claim 4
Dependent Claim
43 words
The process of claim 1 wherein the salt-like electrolyte is the salt of a metal selected from the main group of Groups I and II; the side groups of I, II, IV, V, VI, and VIII of the Mendeleev's Periodic Table of elements.
Claim 5
Dependent Claim
14 words
The method of claim 3 wherein the salt-like electrolyte includes an inorganic acid radical.
Claim 6
Dependent Claim
14 words
The method of claim 3 wherein the salt-like electrolyte includes an organic acid radical.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the salt-like electrolyte is a salt of ammonia or an aliphatic amine.
Claim 8
Dependent Claim
35 words
The process of claim 1 wherein said salt-like electrolyte is selected from the group consisting of sodium chloride; calcium chloride; primary and secondary sodium sulfate; primary, secondary, tertiary sodium phosphate; ammonium carbonate, and ammonium phosphate.
Claim 9
Dependent Claim
26 words
The process of claim 1 wherein the pH value of the salt solution is adjusted to fall within the range of from about 3 to 10.
Claim 10
Dependent Claim
21 words
The process of claim 1 wherein the paint coagulate is separated from the rinse solution and the rinse solution is recycled.
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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) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |