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United States Patent (19) (11) 4,310,683 Longley Et Al

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United States Patent (19) (11) 4,310,683 Longley Et Al United States Patent (19) (11) 4,310,683 Longley et al. 45) Jan. 12, 1982 54 SULFOSUCCNATE DESTERS 56 References Cited U.S. PATENT DOCUMENTS 75 Inventors: Kermit D. Longley, Park Forest; Anastasios J. Karalis, Chicago, both 2,028,091 l/1936 Jaeger ................................. 560/151 of Ill. 3,080,280 3/1963 Lindner ............................... 560/51 3,928,422 12/1975 Sundby ............................... 560/15 4,056,558 11/1977 Sundby ............................... 560/151 (73) Assignee: Witco Chemical Corporation, New York, N.Y. Primary Examiner-Vivian Garner Attorney, Agent, or Firm-Albert L. Gazzola; Morton 21 Appl. No.: 48,924 Friedman 57 ABSTRACT 22) Filed: Jun. 15, 1979 Sulfosuccinate diesters in which one carboxyl group of the sulfosuccinate is esterified with an ethoxylated or propoxylated non-tertiary monoamine, for instance, a Related U.S. Application Data C8-C18 fatty amine, ethoxylated with 3 or 4 moles of (63) Continuation of Ser. No. 842, 198, Oct. 14, 1977, aban ethylene oxide, to form a hydroxyl-containing tertiary doned, which is a continuation of Ser. No. 575,324, amine, and in which the other carboxyl group of the May 7, 1975, abandoned. sulfosuccinate is esterified with an a-monoepoxide such as propylene oxide, or higher a-monoepoxides, and 51 Int, C. ...... - - - - - CO7C 143/12 method of preparation of such sulfosuccinate diesters. (52) U.S. Cl. .................................... 560/151; 252/354; The said sulfosuccinate diesters have utility as surfac 252/542; 252/545; 544/110; 560/196 tants, such as detergents and emulsifiers. (58) Field of Search ................ 560/151; 252/545, 557, 252/354; 544/110 7 Claims, No Drawings 4,310,683 1 - 2 sium, lithium and ammonium), or alkali earth metals, SULFOSUCCINATE DIESTERS namely, calcium, magnesium, strontium and barium; or, as noted above, organic substituted ammonium or This is a continuation of application Ser. No. 842,198, amines. These latter, which most advantageously are filed Oct. 14, 1977, which is a continuation of applica- 5 water-soluble lower molecular weight amines, may be tion Ser. No. 575,324, filed May 7, 1975, both now selected from a wide group, typical examples of which abandoned. are dimethylamine; diethylamine; triethylamine; pro Our invention relates to the preparation of certain pylamine; monoisopropylamine, diisopropylamine, types of novel sulfosuccinate diesters at least most of triisopropylamine, and commercial mixtures of said which can be represented by the following formula: 10 isopropylamines; butyl amine, amylamine; monoisopro R R2 (I) Xn O SOM O w where R is alkyl; X is alkyl; R1 is H or CH3; R2-O-is the radical of an a-epoxide (hereafter called a-epoxide) containing from 3 to 20 carbon atoms; M is an alkali metal, alkaline earth metal or organic substituted ammo panolamine, diisopropanolamine, triisopropanolamine nium cation; m is 1 or 2; n is zero or l; y is from 1 to 10 20 and commercial mixtures of said isopropanolamines; when R is Hand from 1 to 3 when R is CH3; w is 1 or ethanolamines such as monoethanolamine, diethanol 2; with the proviso that the sum of the number of carbon amine, triethanolamine, and commercial mixtures atoms in (R)n is from 2 to 24, and that there is a differ thereof; polyamines such as aminoethyl ethanolamine, ence of at least 2 and, better still, at least 4 in the number ethylenediamine, diethylenetriamine, hydroxyethyl eth of carbon atoms between the sum of the carbon atoms in 25 ylenediamine, and hexamethylenediamine; hexylamine; (i) (R)-NOX) and cyclohexylamine; dimethylbenzylamine, benzylamine; morpholine; etc. Such salts can be prepared from so R1 R2 dium or potassium salts of the novel sulfosuccinate diester compounds of our present invention by known CH2CH and (ii) CH2CH. 30 metathesis techniques. The aforesaid sulfosuccinate diester compounds are Most desirably, the difference in the number of carbon characterized by the fact that there is present in the atoms between the sum of the number of carbon atoms molecules thereof, connected through an ester linkage in (i) (R)n-NOX) and to one of the carboxyl groups of maleic anhydride, a 35 free hydroxyl group in the a-position resulting from the R R2 utilization of an a-epoxide containing at least 3 carbon * atoms in the production of the compounds of our inven CH2CH and (ii) CH2CH tion, and an ester linkage connected through the other one of the carboxyl groups of the maleic anhydride, all is between 4 and 14. Again, generally speaking, the 40 as is hereafter described in detail and illustrated by the preferred novel compounds of our present invention are various disclosed embodiments of our invention. The those wherein, in the aforesaid formula, R is straight special combination of radicals in the compounds of our chain alkyl containing from 8 to 15 carbon atoms, m is invention results in particular properties which effec 1, X is alkyl containing from 1 to 8 carbon atoms, R is tively adapt various of the compounds to highly effec H, R2 is CH3, y is 2 to 6, and w is 1; and those wherein, 45 tive utilities in various environments. in the aforesaid formula, R is straight chain alkyl con In certain cases, the radical (R)n-NOX)-nin formula taining from 3 to 5 carbon atoms, m. is 1, X is alkyl (I) will be derived from a long chain, for instance, a containing from 8 to 15 carbon atoms, Riis H, R2 con C8-C20, aliphatic primary or secondary monoamine, tains from 6 to 14 carbon atoms, y is 2 to 6, and w is 1. and the radical As will also be seen from the following description, 50. certain of the sulfosuccinate diesters of the present in vention may be described as those sulfosuccinate dies R1 ters in which one carboxyl group of the sulfosuccinate CH2-CH-O is esterified with a hydroxyl-containing tertiary amine in the form of an adduct of 2 mol of a C2-C24 aliphatic 55 in said formula (I) will be derived from an a-epoxide non-tertiary monoamine with from 1 to 10 moles of such as propylene oxide or butylene oxide, particular ethylene oxide or 1 to 3 mols of propylene oxide, and in propylene oxide. However, compounds according to which the other carboxyl group of the sulfosuccinate is and within the scope of our invention are also obtained reacted with a C3-C20 a-epoxide to form an ester group, where the (R)-NOX9-n radical of said formula (I) is subject to the proviso that there is a difference of at least derived from a C2-C5 aliphatic non-tertiary monoamine 2, and, particularly, at least 4, carbon atoms between the such as ethyl amine, n-propyl amine, isopropyl amine, number of carbon atoms in said adduct and the number n-butyl amine, isobutyl amine, n-pentyl amine and iso of carbon atoms in said a-epoxide. pentyl amine, and the . It is particularly desirable that the novel sulfosucci nate diester compounds of our present invention be 65 marketed and used in the form of the aforementioned types of salts, that is, where M in formula () is an alkali CH-CH-O metal (which term is here used to mean sodium, potas 4,310,683 3 4. radical is derived from a C3-C20, particularly a C8-C20, containing an organic amine, sufficient water to provide a-epoxide such as octylene oxide or dodecylene oxide a reaction medium and containing dissolved sulfur diox or styrene oxide. ide to form a sulfite of said organic amine, and a water The aforesaid compounds are useful in various fields miscible alcohol, for instance, methyl alcohol, ethyl where surfactant or wetting-out properties are a desid alcohol, n-propanol or isopropyl alcohol, whereby to eratum such as, for instance, detergents, emulsifiers, produce a substantially anhydrous organic amine salt of penetrating agents, stabilizing agents, dispersants, emol the said sulfosuccinic acid diesters. For best results, in lients, and the like. carrying out such reaction, for each mol of said interme Certain sulfosuccinate esters are known to the art, diate diester, the solution reacted therewith should con being disclosed, for instance, in U.S. Pat. Nos. 10 tain about 1 mol or slightly more of organic amine or 2,028,091; 2,252,401, 2,316,234; 2,507,030, 2,887,504; amines, and about 1 mol of water containing about 1 2,976,208; 2,976,209; 2,976,211; 3,002,994; 3,080,280; mol of sulfur dioxide. 3,123,640; 3,123,641; 3,141,905; 3,155,591; 3,404;164; In the preparation of the novel compounds of our 3,481,973; French Patent of Addition No. 69,516; and C. invention by the foregoing method, it is important, in R. Caryl. Ind. Eng. Chem., 33, 731-7 (1941). However, 15 order to obtain said compounds, that the sequence of so far as we are aware, there has been no prior sugges steps noted above be followed, that is, that the maleic tion of disclosure of any of the compounds of our inven acid monoester of the hydroxyl-containing tertiary tion. amine in the form of the aforesaid adduct first be pro In the preparation of various of the novel compounds vided or prepared after which the raction with the of our invention, maleic anhydride is initially reacted 20 a-epoxide is carried out, followed by the reaction with with a hydroxyl-containing tertiary amine in the form the aqueous bisulfite to introduce the sulfonic group of an adduct of 1 mol of an aliphatic non-tertiary mono into the molecule. Thus, for instance, if the a-epoxide is amine with, for instance, 2 to 6 mols of ethylene oxide first reacted with the maleic anhydride and then with or 1 to 2 mols of propylene oxide, in proportions such as (a) the said adduct followed by the reaction with the to produce predominately the maleic acid monoester, 25 aqueous bisulfite, or (b) the adduct bisulfite followed by generally speaking, a mol ratio of 1 to about 1.2 mols of the reaction with the said adduct, the products of or maleic anhydride to 1 mol of the adduct to produce a contemplated by the present invention are not obtained.
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