Patent US5316587A successfully refreshed from Google Patents.
US5316587A
Expired / Lapsed
US
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Water soluble blast media containing surfactant
Assignee: Church and Dwight Co Inc
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Filing: 1993-01-21
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Granted: 1994-05-31
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Expires: 2013-01-21
Abstract
Abstract A blast media for stripping contaminants from a solid surface comprises water soluble abrasive particles and a surfactant which reduces the amount of water soluble residues of blast media remaining on the targeted surface and which enables any residues which remain to be readily removed by fresh water.
Inventors
- 👤 Benny S. Yam
- 👤 Amy L. Joseph
- 👤 Anthony E. Winston
- 👤 Keith A. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:27
CPC Classifications
B; B24; B24C; B24C11/00; B24C11/005; B08; B08B; B08B7/00; B24C1/00; B24C1/003; B24C1/08; B24C1/086; C; C01; C01D; C01D7/00; C11; C11D; C11D17/00; C11D17/0008; C11D17/0013
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
43 words
A method of blast cleaning a solid surface comprising; propelling an abrasive blast media against a solid surface by means of a water-containing pressurized fluid stream to strip contaminants from said surface, said blast media comprising water soluble abrasive particles and a surfactant.
Claim 2
Independent Claim
43 words
A method of blast cleaning a solid surface comprising; propelling an abrasive blast media against a solid surface by means of a water-containing pressurized fluid stream to strip contaminants from said surface, said blast media comprising water soluble abrasive particles and a surfactant.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said abrasive particles comprise sodium bicarbonate.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein said pressurized fluid stream consists essentially of water.
Claim 5
Dependent Claim
32 words
The method of claim 1 wherein said pressurized fluid stream is primarily air and water is added to said pressurized fluid stream as a separate stream for the purpose of dust control.
Claim 6
Dependent Claim
32 words
The method of claim 4 wherein said water is mixed as a separate water stream with said pressurized fluid stream within a blast nozzle which directs said blast media to said surface.
Claim 7
Dependent Claim
34 words
The method of claim 4 wherein said water is added as a separate water stream to said pressurized fluid stream externally from a blast nozzle which directs said blast media to said targeted surface.
Claim 8
Dependent Claim
18 words
The method of claim 4 wherein said surfactant is added as a liquid to said separate water stream.
Claim 9
Dependent Claim
16 words
The method of claim 1 wherein said surfactant is a liquid coated onto said abrasive particles.
Claim 10
Dependent Claim
21 words
The method of claim 1 wherein said blast media contains carrier particles which are coated with said surfactant in liquid form.
Claim 11
Dependent Claim
24 words
The method of claim 1 wherein said surfactant is selected from the sodium, potassium and ethanol amine salts of N-lauroyl, N-myristoyl or N-palmitoyl sarcosinate.
Claim 12
Dependent Claim
10 words
The method of claim 1 wherein said surfactant comprises N-alkyl-2-pyrrolidones.
Claim 13
Dependent Claim
16 words
The method of claim 1 wherein said surfactant comprises polycarboxylated ethylene oxide condensates of fatty alcohols.
Claim 14
Dependent Claim
14 words
The method of claim 1 wherein said blast media further includes a flow aid.
Claim 15
Dependent Claim
20 words
The method of claim 13 wherein said flow aid is hydrophilic silica, hydrophobic silica, hydrophobic polysiloxane or a mixture thereof.
Claim 16
Dependent Claim
11 words
The method of claim 1 wherein said solid surface is metallic.
Claim 17
Dependent Claim
11 words
The method of claim 1 wherein said solid surface is nonmetallic.
Claim 18
Dependent Claim
19 words
The method of claim 1 wherein said surfactant comprises up to about 3 wt. % of said abrasive particles.
Claim 19
Dependent Claim
10 words
The method of claim 1 wherein said surfactant is anionic.
Claim 20
Dependent Claim
11 words
The method of claim 18 wherein said surfactant is a solid.
Claim 21
Dependent Claim
14 words
The method of claim 1 wherein said surfactant is a mixture of different surfactants.
Claim 22
Dependent Claim
19 words
The method of claim 20 wherein said surfactant comprises a mixture of an anionic surfactant and a nonionic surfactant.
Claim 23
Dependent Claim
14 words
The method of claim 1 wherein said surfactant is an ethoxylated long chain alcohol.
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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) | 1997-05-30 | 1997-11-29 | 1998-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-30 | 2001-11-29 | 2002-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-30 | 2005-11-29 | 2006-05-31 | $7700.00 | Window Closed / Lapsed |