Patent US4348294A successfully refreshed from Google Patents.
US4348294A
Expired / Lapsed
US
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One package replenisher for aluminum cleaner
Assignee: PPG Industries Ohio Inc
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Filing: 1980-06-26
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Granted: 1982-09-07
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Expires: 2000-06-26
Abstract
Abstract Disclosed is a one package cleaning solution replenisher concentrate having good temperature stability characteristics. The replenisher concentrate is a temperature stable aqueous acidic solution comprising a polyalkylene glycol-abietic acid surfactant, a polyalkylene glycol-hydrocarbon surfactant, and at least 2% fluoride and is well adapted to replenish a working bath of cleaning solution to maintain the activity thereof.
Inventors
- 👤 Peter F. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:43
CPC Classifications
C; C11; C11D; C11D3/00; C23; C23G; C23G1/00; C23G1/02; C23G1/12; C23G1/125
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
An aqueous acidic replenisher having good temperature stability and containing, as active ingredients, a polyalkylene glycol-abietic acid surfactant having the general formula: A(R'O).sub.n H; a polyalkylene glycol-hydrocarbon surfactant having the general formula: R(OR').sub.n OH; wherein: R is an alkyl or alkylaryl group of 8-22 carbon atoms, each R' is a divalent radical selected from ethylene, propylene and combinations thereof each n is an integer from 7 to 22, and A is the abietic acid radical; fluoride; and sulfuric acid, characterized by having said surfactants present in a combined concentration of from about 10 to about 20% by weight, said fluoride present in a concentration of from about 2 to about 15% by weight and said sulfuric acid present in a concentration of from about 25 to about 50% by weight and being further characterized by having the said active ingredients present in a combined concentration of from about 38 to about 68% by weight.
Claim 2
Dependent Claim
154 words
An aqueous acidic replenisher having good temperature stability and containing, as active ingredients, a polyalkylene glycol-abietic acid surfactant having the general formula: A(R'O).sub.n H; a polyalkylene glycol-hydrocarbon surfactant having the general formula: R(OR').sub.n OH; wherein: R is an alkyl or alkylaryl group of 8-22 carbon atoms, each R' is a divalent radical selected from ethylene, propylene and combinations thereof each n is an integer from 7 to 22, and A is the abietic acid radical; fluoride; and sulfuric acid, characterized by having said surfactants present in a combined concentration of from about 10 to about 20% by weight, said fluoride present in a concentration of from about 2 to about 15% by weight and said sulfuric acid present in a concentration of from about 25 to about 50% by weight and being further characterized by having the said active ingredients present in a combined concentration of from about 38 to about 68% by weight.
Claim 3
Dependent Claim
26 words
A replenisher as in claim 1 wherein each of said polyalkylene glycol-hydrocarbon surfactant and said polyalkylene glycol-abietic acid surfactant is present in about an equal concentration.
References Cited (Backward Citations)
US3969135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |