US5582650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cleaning parts soiled or encrusted with polyester resin
Assignee: Diller Corp
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Filing: 1995-01-13
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Granted: 1996-12-10
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Expires: 2015-01-13
Abstract
Abstract A process using primarily aqueous-based surfactants for cleaning machinery, tools, containers and the like to remove polyester resin residue. This process involves four stages, each having one or more steps. The first stage is a pre-wash or preliminary cleaning stage which is followed by an ultra-sonic wash stage. The third stage is a rinse stage and the fourth and last stage is for drying the parts cleaned during the previous three stages of the process. Additionally, a fifth evaporation/drying stage is periodically carried out to remove polyester resin residues from the process as solid waste.
Inventors
- 👤 Edward L. Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:37
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12; B08B7/00; B08B7/04; C; C11; C11D; C11D1/00; C11D1/66; C11D1/83; C11D3/00; C11D3/02; C11D3/04; C11D3/08; C11D3/43; C11D1/02; C11D1/12; C11D1/22; C11D1/72; C11D2111/00; C11D2111/40; C11D2111/46
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
188 words
A process for cleaning parts soiled or encrusted with partially cured polyester resin, comprising the steps of: pre-cleaning parts soiled or encrusted with partially cured polyester resin residue by scraping and draining out said polyester resin residue; washing said parts soiled or encrusted with partially cured polyester resin residue at least once in an ultrasonic cleaning device with an aqueous alkaline surfactant cleaner consisting essentially of an alkyl phenyl ethoxylate and a linear alkyl benzyl sulfonate, to emulsify and dislodge said polyester resin residue from said parts, said parts being submerged in said aqueous alkaline surfactant cleaner, then brushing off said emulsified polyester resin residue, wherein said aqueous alkaline surfactant cleaner has a pH in the range of about 10-13; rinsing and brushing said parts with water in a rinse tank to remove any remaining emulsified polyester resin residue from said parts; rinsing said parts again with water using a spray wand in a tank of water to remove any aqueous alkaline surfactant cleaner remaining on said parts; placing said parts on a table to dry; and subjecting said parts to compressed air to further dry said parts.
Claim 2
Dependent Claim
188 words
A process for cleaning parts soiled or encrusted with partially cured polyester resin, comprising the steps of: pre-cleaning parts soiled or encrusted with partially cured polyester resin residue by scraping and draining out said polyester resin residue; washing said parts soiled or encrusted with partially cured polyester resin residue at least once in an ultrasonic cleaning device with an aqueous alkaline surfactant cleaner consisting essentially of an alkyl phenyl ethoxylate and a linear alkyl benzyl sulfonate, to emulsify and dislodge said polyester resin residue from said parts, said parts being submerged in said aqueous alkaline surfactant cleaner, then brushing off said emulsified polyester resin residue, wherein said aqueous alkaline surfactant cleaner has a pH in the range of about 10-13; rinsing and brushing said parts with water in a rinse tank to remove any remaining emulsified polyester resin residue from said parts; rinsing said parts again with water using a spray wand in a tank of water to remove any aqueous alkaline surfactant cleaner remaining on said parts; placing said parts on a table to dry; and subjecting said parts to compressed air to further dry said parts.
Claim 3
Dependent Claim
40 words
A process as recited in claim 1, further comprising a step of flushing said parts with said aqueous alkaline surfactant cleaner having a pH in the range of about 10-13 in a flushing device before said washing and brushing step.
Claim 4
Dependent Claim
19 words
A process as recited in claim 2, wherein the pH of said aqueous alkaline surfactant cleaner is about 11.
Claim 5
Dependent Claim
41 words
A process as recited in claim 1, further comprising a step of agitating said parts in a parts washer device with said aqueous alkaline surfactant cleaner having a pH in the range of about 10-13 before said washing and brushing step.
Claim 6
Dependent Claim
19 words
A process as recited in claim 4, wherein the pH of said aqueous alkaline surfactant cleaner is about 11.
Claim 7
Dependent Claim
56 words
A process as recited in claim 1, further comprising the steps of: evaporating water from said rinsing steps and from said aqueous alkaline surfactant cleaner contaminated with said emulsified polyester resin residue in an evaporator; and drying said polyester resin residue emulsified with said alkaline surfactant cleaner in a drum dryer for later disposal as waste.
Claim 8
Dependent Claim
19 words
A process as recited in claim 1, wherein the pH of said aqueous alkaline surfactant cleaner is about 11.
Claim 9
Dependent Claim
30 words
A process as recited in claim 1, further comprising a step of flushing said parts with a propylene carbonate solvent in a flushing device before said washing and brushing step.
Claim 10
Dependent Claim
194 words
A process for cleaning parts soiled or encrusted with partially cured polyester resin, comprising the steps of: pre-cleaning parts soiled or encrusted with partially cured polyester resin residue by scraping and draining out said polyester resin residue; washing said parts soiled or encrusted with partially cured polyester resin residue at least once in an ultrasonic cleaning device with an aqueous alkaline surfactant cleaner consisting essentially of an alkyl phenyl ethoxylate, a linear alkyl benzyl sulfonate, sodium metasilicate, and dipropylene glycol methyl ether, to emulsify and dislodge said polyester resin residue from said parts, said parts being submerged in said aqueous alkaline surfactant cleaner, then brushing off said emulsified polyester resin residue, wherein said aqueous alkaline surfactant cleaner has a pH in the range of about 10-13; rinsing and brushing said parts with water in a rinse tank to remove any remaining emulsified polyester resin residue from said parts; rinsing said parts again with water using a spray wand in a tank of water to remove any aqueous alkaline surfactant cleaner remaining on said parts; placing said parts on a table to dry; and subjecting said parts to compressed air to further dry said parts.
Claim 11
Dependent Claim
194 words
A process for cleaning parts soiled or encrusted with partially cured polyester resin, comprising the steps of: pre-cleaning parts soiled or encrusted with partially cured polyester resin residue by scraping and draining out said polyester resin residue; washing said parts soiled or encrusted with partially cured polyester resin residue at least once in an ultrasonic cleaning device with an aqueous alkaline surfactant cleaner consisting essentially of an alkyl phenyl ethoxylate, a linear alkyl benzyl sulfonate, sodium metasilicate, and dipropylene glycol methyl ether, to emulsify and dislodge said polyester resin residue from said parts, said parts being submerged in said aqueous alkaline surfactant cleaner, then brushing off said emulsified polyester resin residue, wherein said aqueous alkaline surfactant cleaner has a pH in the range of about 10-13; rinsing and brushing said parts with water in a rinse tank to remove any remaining emulsified polyester resin residue from said parts; rinsing said parts again with water using a spray wand in a tank of water to remove any aqueous alkaline surfactant cleaner remaining on said parts; placing said parts on a table to dry; and subjecting said parts to compressed air to further dry said parts.
Claim 12
Dependent Claim
37 words
A process as recited in claim 9, further comprising a step of flushing said parts with said aqueous alkaline surfactant cleaner having a pH of about 11 in a flushing device before said washing and brushing step.
Claim 13
Dependent Claim
35 words
A process as recited in claim 9, further comprising a step of agitating said parts washer device with said aqueous alkaline surfactant cleaner having a pH of about 11 before said washing and brushing step.
Claim 14
Dependent Claim
56 words
A process as recited in claim 9, further comprising the steps of: evaporating water from said rinsing steps and from said aqueous alkaline surfactant cleaner contaminated with said emulsified polyester resin residue in an evaporator; and drying said polyester resin residue emulsified with said aqueous alkaline surfactant cleaner in a dryer for later disposal as waste.
Claim 15
Dependent Claim
30 words
A process as recited in claim 9, further comprising a step of flushing said parts with a propylene carbonate solvent in a flushing device before said washing and brushing step.
References Cited (Backward Citations)
US3762952A
Cited
US3865628A
Cited
US4591391A
Cited
US4537705A
Cited
US4838948A
Cited
US5064557A
Cited
JPH05140812A
Cited
US5259993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-10 | 2000-06-10 | 2000-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-10 | 2004-06-10 | 2004-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-10 | 2008-06-10 | 2008-12-10 | $7700.00 | Window Closed / Lapsed |