US3948909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ashless detergent dispersant for hydrocarbon oils
Assignee: Tonen General Sekiyu KK
•
Filing: 1974-06-28
•
Granted: 1976-04-06
•
Expires: 1994-06-28
Abstract
Abstract An ashless detergent dispersant for hydrocarbon oils which comprises a mixture of ester-amide-imide compounds obtained by reacting (A) one mole of an alkenyl dibasic acid or alkenyl dibasic acid anhydride having at least 40 carbon atoms in the alkenyl moiety, with (B) 0.05 to 0.65 mole of an alkanolamine of formula HN(R'OH)2 wherein R' is an alkylene group having 2 to 10 carbon atoms, and then reacting that resulting intermediate product, with (C) 0.1 to 0.5 mole, per mole of the alkenyl dibasic acid or alkenyl dibasic acid anhydride moiety of said intermediate product, of a member selected from the group consisting of amines of the formulae (A) H2N(R''NH)nN, (b) CH2CH2 HN ANGLE ANGLE N(R''NH)nH, CH2CH2 (c) CH2CH2 O ANGLE ANGLE N(R''NH)nH, and CH2CH2 wherein R'' is an alkylene group having 1 to 10 carbon atoms and n is a number of from 1 to 6.
Inventors
- 👤 Nobukazu Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:44
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/125; C07D295/13; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C09; C09K; C09K23/00; C09K23/22; C10; C10M; C10M133/00; C10M133/52; C10M2205/00; C10M2205/02; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/04; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/02; C10N2040/08; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
166 words
An ashless detergent dispersant composition consisting essentially of a reaction product obtained by a two stage reaction in which, in the first stage, (A) alkenyl dicarboxylic acid or alkenyl dicarboxylic acid anhydride, wherein the alkenyl has at least 40 carbon atoms, is reacted with (B) an alkanolamine of the formula HN(R'OH) 2 , wherein R' is alkylene having 2 to 10 carbon atoms, at a molar ratio of (A):(B) in the range of from 1:0.05 to 1:0.65, to form an intermediate; and, in the second stage, said intermediate is reacted with (C) a member selected from the group consisting of amines of the formulae (a) H.sub.2 N(R"NH).sub.n H, ##SPC1## wherein R" is alkylene having 1 to 10 carbon atoms and n is an integer of from 1 to 6, at a molar ratio of (alkenyl dicarboxylic acid or alkenyl dicarboxylic acid anhydride moiety in said intermediate) :C in the range of from 1:0.1 to 1:0.5, to obtain a reaction product containing ester, amide and imide linkages.
Claim 2
Dependent Claim
166 words
An ashless detergent dispersant composition consisting essentially of a reaction product obtained by a two stage reaction in which, in the first stage, (A) alkenyl dicarboxylic acid or alkenyl dicarboxylic acid anhydride, wherein the alkenyl has at least 40 carbon atoms, is reacted with (B) an alkanolamine of the formula HN(R'OH) 2 , wherein R' is alkylene having 2 to 10 carbon atoms, at a molar ratio of (A):(B) in the range of from 1:0.05 to 1:0.65, to form an intermediate; and, in the second stage, said intermediate is reacted with (C) a member selected from the group consisting of amines of the formulae (a) H.sub.2 N(R"NH).sub.n H, ##SPC1## wherein R" is alkylene having 1 to 10 carbon atoms and n is an integer of from 1 to 6, at a molar ratio of (alkenyl dicarboxylic acid or alkenyl dicarboxylic acid anhydride moiety in said intermediate) :C in the range of from 1:0.1 to 1:0.5, to obtain a reaction product containing ester, amide and imide linkages.
Claim 3
Dependent Claim
25 words
An ashless detergent dispersant composition according to claim 1, in which the molar ratio of (A):(B) is in the range of from 1:0.10 to 1:0.65.
Claim 4
Dependent Claim
25 words
An ashless detergent dispersant composition according to claim 1, in which the reaction temperatures in both stages are in the range of 100° to 250°C.
Claim 5
Dependent Claim
23 words
An ashless detergent dispersant composition according to claim 1, in which the alkenyl has a molecular weight of about 600 to about 1500.
Claim 6
Dependent Claim
24 words
An ashless detergent dispersant composition according to claim 1, in which (A) is a polybutenyl succinic anhydride obtained by reacting polybutene with maleic anhydride.
Claim 7
Dependent Claim
23 words
An ashless detergent dispersant composition according to claim 1, in which (B) is selected from the group consisting of diethanolamine, diisopropanolamine and dibutanolamine.
Claim 8
Dependent Claim
26 words
An ashless detergent dispersant composition according to claim 1, in which (C) is selected from the group consisting of diethylene triamine, triethylene tetramine and tetraethylene pentamine.
Claim 9
Dependent Claim
24 words
An ashless detergent dispersant composition according to claim 1, in which (C) is selected from the group consisting of β-aminoethyl piperazine and β-aminopropyl piperazine.
Claim 10
Dependent Claim
15 words
An ashless detergent dispersant composition according to claim 1, in which (C) is β-aminobutyl morpholine.
Claim 11
Dependent Claim
23 words
An ashless detergent dispersant composition according to claim 1, in which (C) is selected from the group consisting of ethylamine, n-butylamine and dodecylamine.
Claim 12
Dependent Claim
153 words
A process for synthesizing an ashless detergent dispersant composition which comprises: reacting in a first stage at 100° to 250°C., (A) alkenyl dicarboxylic acid or alkenyl dicarboxylic acid anhydride, wherein the alkenyl has at least 40 carbon atoms, with (B) an alkanolamine of the formula HN(R'OH) 2 , wherein R' is alkylene having 2 to 10 carbon atoms, at a molar ratio of (A):(B) in the range of from 1:0.05 to 1:0.65, to form an intermediate; and, reacting in a second stage, at 100° to 250°C., said intermediate with (C) a member selected from the group consisting of amines of the formulae (a) H.sub.2 N(R"NH).sub.n H, ##SPC2## wherein R" is alkylene having 1 to 10 carbon atoms and n is an integer of from 1 to 6, at a molar ratio of (alkenyl dicarboxylic acid or alkenyl dicarboxylic acid anhydride moiety in said intermediate) :C in the range of from 1:0.1 to 1:0.5.
Claim 13
Dependent Claim
153 words
A process for synthesizing an ashless detergent dispersant composition which comprises: reacting in a first stage at 100° to 250°C., (A) alkenyl dicarboxylic acid or alkenyl dicarboxylic acid anhydride, wherein the alkenyl has at least 40 carbon atoms, with (B) an alkanolamine of the formula HN(R'OH) 2 , wherein R' is alkylene having 2 to 10 carbon atoms, at a molar ratio of (A):(B) in the range of from 1:0.05 to 1:0.65, to form an intermediate; and, reacting in a second stage, at 100° to 250°C., said intermediate with (C) a member selected from the group consisting of amines of the formulae (a) H.sub.2 N(R"NH).sub.n H, ##SPC2## wherein R" is alkylene having 1 to 10 carbon atoms and n is an integer of from 1 to 6, at a molar ratio of (alkenyl dicarboxylic acid or alkenyl dicarboxylic acid anhydride moiety in said intermediate) :C in the range of from 1:0.1 to 1:0.5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |