MXPA98005485A - Procedure for the preparation of multifunctional additive for combustib polialfaolefinsuccinimidas and composition - Google Patents
Procedure for the preparation of multifunctional additive for combustib polialfaolefinsuccinimidas and compositionInfo
- Publication number
- MXPA98005485A MXPA98005485A MXPA/A/1998/005485A MX9805485A MXPA98005485A MX PA98005485 A MXPA98005485 A MX PA98005485A MX 9805485 A MX9805485 A MX 9805485A MX PA98005485 A MXPA98005485 A MX PA98005485A
- Authority
- MX
- Mexico
- Prior art keywords
- reaction
- carried out
- alkenylation
- composition
- amination
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 239000000654 additive Substances 0.000 title claims abstract description 12
- 230000000996 additive Effects 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 7
- 238000002360 preparation method Methods 0.000 title claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N Maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003599 detergent Substances 0.000 claims abstract description 13
- 239000000446 fuel Substances 0.000 claims abstract description 12
- VILCJCGEZXAXTO-UHFFFAOYSA-N Triethylenetetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims abstract description 11
- -1 alkenyl succinic anhydride Chemical compound 0.000 claims abstract description 10
- 229920000768 polyamine Polymers 0.000 claims abstract description 6
- 229940014800 succinic anhydride Drugs 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000005576 amination reaction Methods 0.000 claims description 13
- 229920000098 polyolefin Polymers 0.000 claims description 10
- 238000009472 formulation Methods 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 7
- 239000003112 inhibitor Substances 0.000 claims description 7
- 230000002401 inhibitory effect Effects 0.000 claims description 7
- 239000000969 carrier Substances 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 238000004821 distillation Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N benzohydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims 2
- 150000005206 1,2-dihydroxybenzenes Chemical class 0.000 claims 1
- YCIMNLLNPGFGHC-UHFFFAOYSA-N Catechol Natural products OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims 1
- 229920001083 Polybutene Polymers 0.000 claims 1
- 239000004698 Polyethylene (PE) Substances 0.000 claims 1
- 229920002367 Polyisobutene Polymers 0.000 claims 1
- 239000004743 Polypropylene Substances 0.000 claims 1
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N Tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 claims 1
- 150000001298 alcohols Chemical class 0.000 claims 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- 150000002990 phenothiazines Chemical class 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 150000004053 quinones Chemical class 0.000 claims 1
- LPXPTNMVRIOKMN-UHFFFAOYSA-M Sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 abstract description 4
- 241000894007 species Species 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 150000008064 anhydrides Chemical class 0.000 description 13
- 229960001124 Trientine Drugs 0.000 description 9
- 150000001336 alkenes Chemical class 0.000 description 9
- 238000004587 chromatography analysis Methods 0.000 description 8
- 239000007795 chemical reaction product Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 238000010348 incorporation Methods 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000003849 aromatic solvent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-Octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- HFDVRLIODXPAHB-UHFFFAOYSA-N 1-tetradecene Chemical compound CCCCCCCCCCCCC=C HFDVRLIODXPAHB-UHFFFAOYSA-N 0.000 description 1
- AFFLGGQVNFXPEV-UHFFFAOYSA-N Decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N Octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 229940069096 dodecene Drugs 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
This invention relates to a process for preparing polyalphaolephinsuccionimides from polyaphalephins, maleic derivatives and polyamines as well as the composition of a multifunctional additive based on these chemical species, which incorporated into automotive fuels improves its detergent and anti-rust detergent properties. The product (polyaphalephinsuccinimides) is obtained in two stages: in the first step a polyaphaolefin is reacted with a maleic derivative (preferably maleic anhydride), obtaining an alkenyl succinic anhydride as an intermediate chemical species. In the second stage, this intermediate (alkenyl succinic anhydride) is reacted with a polyamine (preferably triethylenetetramine) to obtain a condensed product of the polyalphaolephinsuccinimide type.
Description
PROCEDURE FOR THE PREPARATION OF POLYALFAOLEINSINSCYCLES AND COMPOSITION OF
MULTIFUNCTIONAL ADDITIVE FOR COMBUSTIBLES
DESCRIPTION.
TECHNICAL FIELD OF THE INVENTION
This invention relates to a process for preparing polyalphaolephinsuccinimides from polyalphaoleophins, maleic derivatives and polyamines as well as the composition of a multifunctional additive based on these chemical species, which incorporated into automotive fuels improves its detergent-dispersant and anti-rust properties.
The product (polyalphaolephinsuccinimides) is obtained in two stages: in the first step a polyalphaolefin is reacted with a maleic derivative (preferably maleic anhydride), obtaining an alkenyl succinic anhydride as intermediate chemical species.
In the second step, this intermediate (alkenyl succinic anhydride) is reacted with a polyamine (preferably triethylenetetramine) to obtain a condensate product of the polyalphaolephinsuccinimide type.
The reaction product is combined with other ingredients such as "carriers", solvents, demulsifiers and corrosion inhibitors to integrate a multifunctional additive for use in internal combustion engines whose main function is to reduce the formation of deposits in intake systems.
BACKGROUND OF THE INVENTION
The patent literature describes various classes of alkenyl succinimide compounds and the use thereof as dispersant additives and detergents in fuels and lubricants, for example the following patents may be cited:
USES. 4,548,724; USES. 4 048 080; USES. 379 877; USES. 3 717 446.
EP-A-0.299119 and EP 0393769B1 disclose reaction products of alkenylsuccinic acids or anhydrides with amines as additives that provide detergent, dispersant and anti-rust properties in fuels and lubricating oils.
DETAILED DESCRIPTION OF THE INVENTION
This invention provides a process for preparing a detergent-dispersant additive for automotive liquid fuels, which may also be
used for lubricating oils and obtained in two stages of reaction in an intermittent process.
I.- FORMATION OF ALKENILSUCCINIC ANHYDRIDE In this step polyalphaolefins of the general formula
CH3 CH3 CH3 I I I
CH3- (CH2) n-CH = CH2 or CH3-C- (CH2-C-) n-CH2-C = CH2 I I CH3 CH3 (A) (B)
react with maleic anhydride of the formula:
OR
CH-C \ O
CH-C / O (C)
to obtain alkenylsuccinic anhydrides of the formulas CH3- (CH2) n-CH-CH = CH2 i ^ or (D) CH-C \ I O
CH2-C / O
CH3 I
CH; CH3 C = CH2 O
CH3-C- (CH2- C-) n-CH-CH-C \ I I or (E) CH3 CH3 CH2-C / O
The polyalphaolefins used for this purpose can have molecular weights of 112 (1 octene) to 3000 but preferably 159 (1 decene) to 1500 and are usually oligomers of ethylene, propylene, butene, isobutylene or copolymers.
II.- AMINATION OF THE ALKENILSUCCINIC ANHYDRIDE
In this step, the alkenyl succinic intermediate (D) or (E) reacts with a polyamine of the formula:
H2N- (CH2-CH2-NH) n-H
(F) Preferentially triethylenetetramine resulting in the reaction end product the polyalphaolephinsuccinimide structures indicated
CH3- (CH2) n-CH-CH = CH2 CH3- (CH2) n-CH-CH = CH2 I ^ O 0. 1 CH-C? ^ / C-CH | N - (- CH2-CH2-NH) 2-CH2-CH2-N | CH2-C / \ C-CH2 O O
(G)
CH3 CH3 I I CH3 CH3 C = CH2 CH2 = C CH3 CH3 I I I I I
CH3-C- (CH2-C-) n-CH CH- (C-CH2) nC-CH3 IIIOO ^ 1 1 I CH3 CH3 CH-C \ / C-CH CH3 CH3 I N - (- CH2-CH2-NH ) 2-CH2-CH2-N | CH2-C / \ C-CH2 O O (H)
The operating conditions for the two reaction stages are indicated in the following table:
TABLE 1
ALKENILAC1ON AMINATION Temperature, ° C 80 - 200 80 - 200 Reaction time (hours) 0.5-12 0.5-12 Agitation R.P.M. 50 - 500 50 - 500 Pressure, Kg / cm2 1 -25 1 -25 Molar ratio Olefin / anhydride 0.5 - 50 Molar ratio Anhydride / amine 0.5-20
The product obtained (polyalphaolephinsuccinimides G or H) is used as an active detergent ingredient of formulations or compositions and together with other components it integrates a multifunctional additive package in the proportions described below:
% WEIGHT Paos (detergent) 5-100 Carrier or fluidizer 0-60 Hydrocarbon solvent 0-60 Corrosion inhibitor 0-5 Demulsifier 0-5
EXAMPLES
EXAMPLE 1
In a glass reactor equipped with heating elements and stirring device was charged 100 ml of polyalphaolefin called 1 tetradecene (molecular weight 196) equivalent to 0.388 moles, to maintain an olefin / anhydride ratio of 0.0155 moles of maleic anhydride ( 1.52 grams), the reaction mixture was heated from room temperature to 180 ° C in the absence of solvents and polymerization inhibitors; this first stage of alkenylation reaction was conducted for 3 hours at a temperature of 180 ° C + 10 ° C at atmospheric pressure and stirring at 180-240 rpm. at this point 0.0155 mol of triethylene tetramine (2.26 grams) was incorporated into the reaction mixture and in the same temperature range of 180 ° C + 10 ° C, same conditions of agitation and pressure the amination reaction was carried out also for 3 hours.
The reaction product was filtered for the separation of impurities and the polyalphaolephinsuccinimide (paos) thus obtained was used as a detergent active ingredient in the following formulation:
% WEIGHT Paos (detergent) 36 Polyether type synthetic carrier 20 Aromatic solvent 40 Corrosion inhibitor 2 uTsemuisiopapie 2 100 The formulated product was subjected to several functional tests including:
a) deposits in admission systems (ISD).
b) reduction of deposits in inlet valves (IVD) in single-cylinder engine of 4 hp
b) Reactivity of fuels to water (ASTM-D-1094)
d) Anti-rust properties of petroleum products
The incorporation of this formulation in the base fuel (see characteristics table II) was carried out in a concentration of 200 ppm.
TABLE II FUEL CHARACTERISTICS: PEMEX-MAGNA UNIT METHOD ASTM VALUE Property
Specific weight D-1298 0.7324
VISUAL color Light green
Test doctor D-235 Negative
Atmospheric distillation Ibp ° C D-86 32.5 50% bp ° C D-86 88.3 90% bp ° C D-86 161.3 Tfe ° C D-86 199 Residues% V D-86 1.1
Steam pressure reid Ib / in2 D-323 8.6
Mercaptanic Sulfur% PESO D-3227 0.0003
Total sulfur% WEIGHT D-1266 / D-2622 0.081
Copper corrosion STD D-130 1a
3h? - @ 50 ° C Preformed rubber mg / 100 D-381 0.4 Induction period minutes D-525 > 300
Lead content g / Gal D-3116 / D-3137 < 0.001
Octane number Ron D-2699 91.4 Mon D-2700 81.6 index 86.5
Phosphorus content g / Gal D-3231 < 0.2
Composition Paraffins% V CHROMATOGRAPHY 11.79 Isoparaffins% V CHROMATOGRAPHY 42.18 Olefins% V CHROMATOGRAPHY 5.84 Naphthenics% V CHROMATOGRAPHY 4.14 Aromatics% V CHROMATOGRAPHY 26.27 Unidentified% V CHROMATOGRAPHY 0.23 Mtbe% V CHROMATOGRAPHY 6.05 Tame% V CHROMATOGRAPHY 1.24
Ferrous corrosion STD NACE-TM-01 E
The results of the functionality tests are indicated in Table III.
EXAMPLE 2 In the same laboratory equipment described in Example 1, 100 ml of polyalphaolefin was charged but now composed of a mixture of C-12 and C-14-I dodecene and Itetradecene-with an approximate molecular weight of 177 equivalent to 0.429 moles, to work at an olefin / anhydride ratio of 0.0172 moles of maleic anhydride (1.68 grams) were added, the alkenylation reaction was conducted under the same conditions of pressure, temperature, time, agitation, etc. described above, 0.0172 moles of triethylene tetramine (2.51 grams) were then incorporated into the reaction mixture, the amination reaction also being carried out at the aforementioned operating conditions.
The reaction product was formulated in the same proportions of ingredients indicated in the previous example. The composition was subjected to the corresponding functional tests and the results are indicated in Table III.
EXAMPLE 3
In the same laboratory equipment described in example i, 100 ml of a polyalphaolefin, isobutene polymer with an approximate molecular weight of 500 equivalent to 0.168 mol was charged, maintaining the olefin / anhydride ratio of 25. 0.0067 moles (0.66 grams) were added. of maleic anhydride. the reaction of
Alkenylation was carried out at the conditions described in Example 1. Subsequently, 0.0067 moles of triethylene tetramine (0.98 grams) were added, and the amination reaction was also carried out under the operating conditions already described.
The polyalphaolephinsuccinimide reaction product was used in preparing a formulation similar to that indicated in Example 1 and the functionality results are shown in Table III.
EXAMPLE 4
in the same laboratory equipment described in example 1, 100 ml of polalfaolefin with an approximate molecular weight of 530 equivalent to 0.156 mol was charged, maintaining the olefin / anhydride ratio of 0.000624 moles (0.61 grams) of maleic anhydride were added. The alkenylation reaction was carried out under the same operating conditions described in Example 1. Subsequently, 0.00624 moles of triethylene tetramine (0.91 grams) were added, and the amination reaction was also carried out under the operating conditions already described in the example.
The polyalphaolephinsuccinimide reaction product was used in preparing a formulation similar to that described in Example 1 and the functionality results are shown in Table III.
EXAMPLE 5
In the same laboratory equipment described in example 1, 100 ml of a polyalphaolefin with an approximate molecular weight of 1400 equivalent to 0.0603 mol was charged, maintaining the olefin / anhydride ratio of 25, 0.00242 (0.237 grams) of maleic anhydride was added. The alkenylation reaction was carried out under the same conditions described in Example 1. Subsequently, 0.00242 moles (0.353 grams) of triethylene tetramine were added, and amination was also carried out in accordance with the provisions of the aforementioned example.
THE RESULTS OF FUNCTIONALITY ARE INDICATED IN TABLE III.
EXAMPLE 6
In the laboratory equipment described in example 1, 100 ml of itetradecene equivalent to 0.388 moles were charged. To maintain an olefin / anhydride ratio of 12, 0.0323 moles of maleic anhydride (3.16 grams) was added. The first reaction step (alkenylation) was carried out at the conditions indicated in example 1. the second reaction step (amination) started with the incorporation of 0.0323 moles of triethylene tetramine (4.71 grams) and was carried out according to the conditions described in same example.
After filtration, the final product polyalphaolephinsuccinimide was used as a detergent active ingredient in the following formulation:
% WEIGHT Paos (detergent) 50 Polyether type synthetic carrier 20 Aromatic solvent 26 Corrosion inhibitor 2 Demulsifier 2 100
The incorporation of this formulation into the base fuel was carried out in a concentration of 300 ppm, and the results of the functionality tests are shown in Table III.
EXAMPLE 7
In the laboratory equipment described in Examples 1 and 6, 100 ml of a polyalphaolefin with an approximate molecular weight of 530 equivalent to 0.156 mol was charged. In order to maintain an olefin / anhydride ratio of 12, 0.0130 moles of maleic anhydride (1.28 grams) were charged. The first reaction stage (alkenylation) was carried out at the conditions mentioned in examples 1 and 6. the second reaction stage (amination) with the addition of 0.0130 mol of triethylene tetramine (1.9 grams) and was carried out in accordance with the conditions described in the same examples.
The product obtained -polyalphaolephinsuccinimide- was used in the same formulation indicated in Example 6 and the results of functionality are indicated in Table III 5 for a dosage level of 300 ppm.
TABLE III 10 RESULTS OF THE EVALUATION OF FORMULATIONS BASED ON DETERGENTS POLIALFAOLEFINSUCCINIMIDAS
EXAMPLE LEVEL ISD IVD ASTM-D-1094 NACE TM-01 ppm mg mg% reduction EMULSIONABILITY PREV. RUST
1 200 0.3 9.1 -78.4 1 b (1), 1 min A
2 200 0.1 8.0 -82.5 1b (1), 1, min B ++
3 200 0.2 8.3 -84.3 1 b (2), 1 min A
4 200 0.3 8.5 -79.9 1 b (1), 1 min B ++
200 0.4 14.3 -68.7 1b (2), 1 min B ++
6 300 0.6 10.1 -77.9 1 b (1), min B ++
7 300 0.5 18.1 -55.6 1 b (1), min B ++
GASOLINE OF 2.4 45.8 +100 1b (1), 1 min E
REFERENCE
fifteen
twenty
Claims (7)
1. - A process for the preparation of polyalfasuccinimides which act as multifunctional additives detergent, dispersant and rust prevention agents, which can be incorporated into liquid fuels mainly gasoline and lubricating oils, characterized in that it is carried out in two reaction stages: alkenylation and amination, in the alkenylation a polyalphaolefin with a molecular weight in the range of 112 (C-8) -3,000 either polyethylenes, polypropylenes, polybutenes or polyisobutylenes, is reacted with maleic anhydride or some of its derivatives, to obtain an intermediate product called alkenyl succinic anhydride , of the general formulas: CH3- (CH2) n-CH-CH = CH2 CH-C \ I O CH2-C / O CH3 I CH3 CH3 C = CH2 O CH3-C- (CH2-C-) n-CH-CH-C \ O In the amination reaction the alkenyl succinic anhydride is reacted with a polyamine of the general formula: H2N- (CH2-CH2-NH) n-H preferably triethylenetetramine.
2. - A procedure according to that described in clause 1, characterized in that the alkenylation reaction is carried out in the temperature range of 80-200 ° C, reaction time of 0.5 to 12 hours, pressure of 1 to 25 kg / cm2 and polyolefin / maleic anhydride molar ratio of 0.5 to 50, and that the amination reaction is carried out in the temperature range of 80-200 ° C, reaction time of 0.5 to 12 hours, pressure of 1 to 25 kg / cm2 and maleic anhydride / tetramine molar ratio of 0.5 to 20.
3- a procedure according to what is described in clauses 1 and 2, characterized in that the alkenylation and amination reactions are carried out in the presence or absence of solvents derived from paraffinic, nephthenic or aromatic hydrocarbons.
4. - A process according to what is described in clauses 1 to 3, characterized in that the alkenylation reaction is carried out in the presence or absence of polymerization inhibitors of the hydroquinone, catechols, phenothiazines and quinones type.
5. - A composition of multifunctional additive for fuels based on polyalphaolefininsuccinimides, as an active detergent ingredient in formulation with other components to integrate a package of multifunctional additives, the composition is among the following% weight ranges: Polyalphaolefinsuccinimides 5 A 100 Carrier or fluidizer 0 A 60 Hydrocarbon solvent 0 A 60 Corrosion inhibitor 0 A 5 Demulsifier 0 A 5
6. - A composition according to clause 5, characterized in that the fluidizer is derived from the distillation of the oil and / or other sources of hydrocarbons or can also be of the synthetic type such as polyethers, ethoxylated and propoxylated polymer alcohols.
7. - A composition according to clauses 5 and 6, characterized in that the multifunctional package is used in fuels or lubricants in the range of 25 to 2500 ppm, but preferably in the range of 50 to 500 ppm.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MXPA98005485A true MXPA98005485A (en) | 2000-01-01 |
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