US 4,368,133 A · Aqueous systems containing nitrogen-containing, phosphorous-free carboxylic solubilizer/surfactant additives

Abstract

Combinations of carboxylic solubilizers, made by reaction of an acylating agent with an N-(hydroxyl-substituted hydrocarbyl) amine and surfactants are useful in incorporating oil-soluble, water-insoluble functional additives into aqueous systems. Typical solubilizers are made by reacting an alkyl-substituted succinic anhydride containing about 12 to about 500 carbon atoms with an alkanol amine such as diethyl ethanol amine. Typical surfactants are nonionic hydrophilic surfactants such as ethoxylated phenols and ionic surfactants of both the anionic and cationic type. Typical functional additives are anti-wear, extreme pressure and load-carrying agents such as dithiophosphates. The aqueous systems formed with the aid of such combinations are useful, for example, as water-based hydraulic fluids.

Claims38

Dependent claims

A composition comprising a continuous aqueous phase and the combination of (A) at least one nitrogen-containing, phosphorous-free carboxylic solubilizer and (B) at least one surfactant in said aqueous phase, said solubilizer (A) being made by the reaction of (A)(I) at least one acylating agent represented by the formula:

##STR6## wherein hyd is a hydrocarbon-based substituent of about 30 to about 500 carbon atoms with (A)(II) at least one (a) N-(hydroxyl-substituted hydrocarbyl) amine, (b) hydroxyl-substituted poly(hydrocarbyloxy) analog of said amine or (c) mixtures of (a) and (b), the ratio of components (A)(II) to (A)(I) being in the range of about 0.5 to about 3 moles of component (A)(II) per equivalent of component (A)(I).

Dependencies are inferred from the claim text.

Facts

Application

06/238,394Filed 25 Feb 1981 · continuation in part

Priority

27 Sep 1978

Granted

11 Jan 1983

Term ends

Not estimatedThe source records don’t support an estimate.

Classification29 codes

C08F 8/44
Chemical modification by after-treatment: preparation of metal salts or ammonium salts
C08F 8/14
Chemical modification by after-treatment: esterification
C08F 8/32
Introducing nitrogen atoms or nitrogen-containing groups: by reaction with amines
C10L 10/02
Use of additives to fuels or fires for particular purposes: for reducing smoke development

Aqueous systems containing nitrogen-containing, phosphorous-free carboxylic solubilizer/surfactant additives

Life of this patent

Aqueous systems containing nitrogen-containing, phosphorous-free carboxylic solubilizer/surfactant additives

Life of this patent

Abstract

Claims38