Patent US4174322A successfully refreshed from Google Patents.
US4174322A
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Thiobis(oxazolines)
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-07-20
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Granted: 1979-11-13
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Expires: 1997-07-20
Abstract
Abstract Lactone oxazoline reaction products of hydrocarbon substituted lactone carboxylic acids, for example, polybutyl lactone carboxylic acid, with 2,2-disubstituted-2-amino-1-alkanols, such as tris-(hydroxymethyl)aminomethane (THAM), and their derivatives are useful additives in oleaginous compositions, such as sludge dispersants for lubricating oil, or anti-rust agents for gasoline.
Inventors
- 👤 Stanley J. Brois
- 👤 Antonio Gutierrez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:35
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; C07D307/34; C07D307/56; C07D307/60; C07D309/00; C07D309/16; C07D309/28; C07D309/30; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C10L1/233; C10L1/24; C10L1/2493; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/48; C10M133/52; C10M133/58; C10M135/00; C10M135/32; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/026; C10M2205/14; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/11; C10M2209/112; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/09; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/045; C10M2223/047; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/06; C10N2040/00; C10N2040/08; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; C10N2070/00; C10N2070/02; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
Oil soluble thio-bis-(hydrocarbyl lactone oxazoline) useful as an additive in oleaginous compositions; derived from alkenyl succinic anhydride, acid or ester; and represented by the formula: ##STR24## wherein R is selected from the group consisting of hydrogen and alkyl of 1 to 400 carbon atoms; X is selected from the group consisting of C 1 to C 3 alkyl and hydroxy-alkyl of the structure --(CH 2 ) n OH wherein n is 1 to 3, at least one of said X being hydroxy alkyl; S represents sulfur and z is an integer ranging from 1 to 4.
Claim 2
Dependent Claim
96 words
Oil soluble thio-bis-(hydrocarbyl lactone oxazoline) useful as an additive in oleaginous compositions; derived from alkenyl succinic anhydride, acid or ester; and represented by the formula: ##STR24## wherein R is selected from the group consisting of hydrogen and alkyl of 1 to 400 carbon atoms; X is selected from the group consisting of C 1 to C 3 alkyl and hydroxy-alkyl of the structure --(CH 2 ) n OH wherein n is 1 to 3, at least one of said X being hydroxy alkyl; S represents sulfur and z is an integer ranging from 1 to 4.
Claim 3
Dependent Claim
28 words
Lactone oxazoline according to claim 1, wherein each X is a hydroxy alkyl group of the structure --(CH 2 ) n OH wherein n is 1 to 3.
Claim 4
Dependent Claim
47 words
A thio-bis-(hydrocarbyl lactone oxazoline) according to claim 1, wherein X is hydroxy alkyl and z is one, said compound being formed by the reaction of polyisobutenylsuccinic acid, having a number average molecular weight of about 960, reacted with SCl 2 , followed by reaction with tris-(hydroxymethyl) aminomethane.
Claim 5
Dependent Claim
50 words
An oil soluble thio-bis-(hydrocarbyl lactone oxazoline) of claim 1, formed by reacting said alkenyl succinic acid with a sulfur chloride and then reacting with an amino alcohol having 4 to 8 carbon atoms of the formula: ##STR25## where X is selected from the group consisting of alkyl and hydroxy alkyl.
Claim 6
Dependent Claim
13 words
A compound according to claim 4, wherein said amino alcohol is tris-(hydroxymethyl) aminomethane.
Claim 7
Dependent Claim
30 words
A compound according to claim 4, wherein said alkenyl succinic acid is polyisobutenyl succinic acid, said polyisobutenyl group having a molecular weight in the range of about 900 to 3000.
Claim 8
Dependent Claim
39 words
A thio-bis-(hydrocarbyl lactone oxazoline) according to claim 1, formed by the reaction of polyisobutenylsuccinic acid, said polyisobutenyl group having a molecular weight in the range of about 900 to 3000, with sulfur halide, followed by reaction with tris-(hydroxymethyl) aminomethane.
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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) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |