Patent US4048081A successfully refreshed from Google Patents.
US4048081A
Expired / Lapsed
US
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Multipurpose fuel additive
Assignee: Rohm and Haas Co
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Filing: 1976-03-29
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Granted: 1977-09-13
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Expires: 1996-03-29
Abstract
Abstract A new multipurpose carburetor detergent for addition to gasoline is disclosed and claimed. The novel multipurpose detergent material shows excellent activity as a carburetor detergent, induction system detergent (% deposit reduction), combustion chamber detergency and, in addition, provides effective rust inhibition when used in automotive gasoline fuels at low concentrations. The new product is a polyisobutene phenol/epichlorohydrin/amine adduct. The novel product may also be described as the reaction product of a polyisobutene phenol with epichlorohydrin followed by amination with ethylene diamine.
Inventors
- 👤 Warren H. Machleder
- 👤 Joseph M. Bollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:59
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10L1/234; C10L1/238; C10L1/2383; C10L1/2387; C10L10/00; C10L10/04; C10L10/06; C10L10/18; C10M; C10M1/00; C10M1/08; C10M133/00; C10M133/52; C10M133/54; C10M2207/00; C10M2207/02; C10M2207/023; C10M2209/00; C10M2209/02; C10M2209/10; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/062; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/09; C10M2219/10; C10M2219/104; C10M2219/108; C10N; C10N2070/00; C10N2070/02; F02B75/02; F02B2075/022; F02B2075/027; F02B2075/1804; F02B2075/1832
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
37 words
A multipurpose gasoline or lubricating oil additive, comprising an adduct selected from compounds, and mixtures thereof, of the formulas: ##STR10## wherein n is 1-5 and R 2 is a benzene group having at least one polyalkylene substituent.
Claim 2
Dependent Claim
37 words
A multipurpose gasoline or lubricating oil additive, comprising an adduct selected from compounds, and mixtures thereof, of the formulas: ##STR10## wherein n is 1-5 and R 2 is a benzene group having at least one polyalkylene substituent.
Claim 3
Dependent Claim
21 words
An additive as in claim 1 wherein the polyalkylene substituent has a number average molecular weight of about 500 to 2,000.
Claim 4
Dependent Claim
14 words
An additive as in claim 2 wherein the polyalkylene substituent is polyisobutyl or polyisopropyl.
Claim 5
Dependent Claim
37 words
An additive as in claim 2 wherein adduct (a) is: ##STR11## and adduct (b) is: ##STR12## wherein PIB H35 is polyisobutyl of number average molecular weight of about 670 and R 1 is PIB H35 or hydrogen.
Claim 6
Dependent Claim
25 words
A composition comprising a mixture of a major proportion of gasoline or lubricating oil and a minor detergent amount of the additive of claim 1.
Claim 7
Dependent Claim
25 words
A composition comprising a mixture of a major proportion of gasoline or lubricating oil and a minor detergent amount of the additive of claim 2.
Claim 8
Dependent Claim
25 words
A composition comprising a mixture of a major proportion of gasoline or lubricating oil and a minor detergent amount of the additive of claim 3.
Claim 9
Dependent Claim
25 words
A composition comprising a mixture of a major proportion of gasoline or lubricating oil and a minor detergent amount of the additive of claim 4.
Claim 10
Dependent Claim
22 words
A composition comprising a mixture of a major proportion of gasoline and about 20- 600 ppm of the additive of claim 1.
Claim 11
Dependent Claim
21 words
A composition comprising a mixture of a major proportion of gasoline and about 20-600 ppm of the additive of claim 3.
Claim 12
Dependent Claim
21 words
A composition comprising a mixture of a major proportion of gasoline and about 20-600 ppm of the additive of claim 4.
References Cited (Backward Citations)
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |