Abstract: A method of reclaiming leftover ready-mix concrete comprising the steps of:(1) retarding the hydration of the unused portion of concrete returned from a job site; and(2) after the desired retarded period adding a hydration acceleration agent to restore the concrete to a settable state.

Abstract: A process for preparing a borated, overbased metal detergent additive for lubricants which comprises dissolving a metal salt in a hydrocarbon solvent, adding a metal base and a polar solvent, treating with an acid gas, filtering the mixture to form a filtrate to which boric acid is added, heating the boric acid/filtrate mixture, stripping the cooled boric acid/filtrate reaction mixture and recovering the borated metal detergent additive therefrom.

Abstract: Lubricant additives are produced by reacting an alkoxylated amine, preferably a dialkoxy long chain alkyl amine, such as a propoxylated amine, with a disubstituted organic phosphite, preferably a dialkyl (C.sub.8 -C.sub.30) phosphite. The additives preferably also contain a boron moiety which is reacted with the phosphite and amine, preferably simultaneously in a one step reaction. The additives are particularly useful in metalworking oils and particularly as extreme pressure additives to replace the currently used chlorinated paraffin additives.

Abstract: A method of improving the efficiency of a heat pump system comprising introducing into the system a polar compound which is liquid under said systems operating conditions.

Abstract: A lubricating oil composition comprising lubricating oil and(i) an amount effective to improve the low temperature flow properties of said lubricating oil composition of additive consisting essentially of at least one law molecular weight polymer or interpolymer of unsaturated carboxy ester represented by the formula ##STR1## wherein R' is selected from the group consisting of hydrogen and COOR, and R is a C.sub.

Abstract: The present invention is directed to a lactone modified dispersant additive comprising at least one adduct of (A) a polyolefin of 300 to 10,000 number average molecular weight substituted with at least 0.8 (e.g., from about 1 to 4) dicarboxylic acid producing moieties (preferably acid or anhydride moieties) per polyolefin molecule, (B) an amido-amine or thioamido-amine characterized by being a reaction product of at least a polyamine and an alpha, beta-unsaturated compound of the formula: ##STR1## wherein X is sulfur or oxygen, Y is --OR.sup.4, --SR.sup.4, or --NR.sup.4 (R.sup.5), and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and are hydrogen or substituted or unsubstituted hydrocarbyl, and a C.sub.5 -C.sub.9 lactone material.

Abstract: A method is described for improving the viscosity storage stability of a Mannich base condensation product of an oxidized polyolefin, formaldehyde, and an amine. This method involves contacting such Mannich base condensation product with a lower alkyl peroxide, a lower alkyl hydroperoxide or an aryl(lower)alkyl hydroperoxide at a temperature of about 250.degree. F. to about 400.degree. F. for a time period sufficient to provide an oxidized product.

Abstract: The present invention provides a lubricating oil composition comprising 97 to 60% by weight of mineral oil and 3 to 40% by weight of polyester, said mineral oil having a kinematic viscosity of 100.degree. C. of 2 to 50 centistokes, a pour point (as determined by JIS K-2269) of not more than -30.degree. C., and a viscosity index (as determined by JIS K-2283) of not less than 70. This lubricating oil composition is suitably, used for lubrication of parts including a wet brake and a wet clutch, such as automatic transmissions and tractors.The lubricating oil composition of the present invention has a suitable viscosity at high temperatures and further is low in low temperature viscosity.Furthermore the lubricating oil composition of the present invention is excellent in friction characteristics, oxidation stability and also in seal rubber compatibility.

Abstract: Engine wear and sludge are reduced by using in the engine crankcase a fomulated motor oil containing a small amount of a cosulfurized blend of a carboxylic acid ester material and a fatty acid oxyalkylated amine derivative selected from fatty acid amides, fatty acid esters, and fatty acid ester-amides of said oxyalkylated amine and mixtures thereof.

Abstract: Engine wear and sludge are reduced by using in the engine crankcase a formulated motor oil containing a small amount of the combination of (i) an overbased alkaline earth metal sulfonate having a total base number of at least 100, (ii) a zinc dihydrocarbyl dithiophosphate, (iii) a sulfurized carboxylic acid ester, and (iv) a sulfurized fatty acid amide, ester or ester-amide of an oxyalkylated amine or mixtures thereof.

Abstract: The reaction product of diacyl generating species, hydrocarbyl amines and diaryl phosphites are effective EP/antiwear and antioxidant additives in lubricating oils, greases and functional fluids.

Abstract: There is provided layered oxides of aluminum and phosphorus or arsenic having pendant organic groups which protrude into the inner layer region of these layered materials. These materials may be prepared by reacting a suitable organoarsenic or organophosphorus compound, such as phenylphosphonic acid, with a suitable aluminum compound, such as alumina, in the presence of a suitable solvent, such as a mixture of ethanol and water, under conditions of elevated temperature.

Abstract: Sulfurized mixtures which include (A) at least one partial fatty acid ester of a polyhydric alcohol, and (B) at least one member of the group consisting of(1) at least one fatty acid ester of a polyhydric alcohol, which fatty acid ester is different from the partial ester (A),(2) at least one fatty acid,(3) at least one olefin, and(4) at least one fatty acid ester of a monohydric alcohol. The sulfurized compositions are useful in preparing additive concentrates and lubricating compositions.

Abstract: A fluid composition for use in a viscous coupling is provided, which comprises (A) a base oil made of a polyorganosiloxane fluid having a viscosity of from about 500 to about 500,000 centistokes at 25.degree. C., and (B) at least one component selected from the group consisting of sulfur and sulfur compounds (b) to (g) listed below being added in a minor amount to said base oil;(b) a hydrocarbon sulfide;(c) a sulfurized oil or fat which is the reaction product of an oil or fat and sulfur;(d) a zinc dithiophosphate;(e) a dialkyldithiocarbamic acid metal salt;(f) elemental sulfur; and(g) a cyclic hydrocarbon sulfide.This fluid composition can be stably used in a viscous coupling for an extended period.

Abstract: Lubricant compositions or hydraulic fluid compositions containing(a) at least one lubricant or one hydraulic fluid and(b) at least one compound of the formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and are each an alkyl group having 1 to 30 C atoms, an unsubstituted or C.sub.1 -C.sub.8 alkyl-substituted cycloalkyl group having 5 to 12 C atoms or an unsubstituted or C.sub.1 -C.sub.12 -alkyl-substituted C.sub.6 -C.sub.10 aryl group, or R.sup.1 and R.sup.2 together are an unsubstituted or C.sub.1 -C.sub.12 alkyl-substituted alkylene group haivng 2 to 20 C atoms or an arylene group having 6 to 20 C atoms, and R.sup.5 and R.sup.6 are identical or different and are each an alkyl group having 1 to 30 C atoms, or R.sup.5 and R.sup.6 together are an unsubstituted or C.sub.1 -C.sub.12 alkyl-substituted alkylene group having 2 to 20 C atoms or an alkylene group which has 2 to 10 C atoms and is interrupted by --O--, --S-- or --NR.sup.9 --, in which R.sup.9 is H or C.sub.1 -C.sub.

Abstract: Mixtures of partial fatty acid esters of polyhydric alcohols and sulfurized compositions. Compositions comprising these mixtures are useful as additives for a wide variety of lubricants.

Abstract: A pour point depressant for lubricating oils comprises a poly(methacrylate) polymer having the repeating unit ##STR1## wherein R is an alkyl group having an average chain length in the polymer of 12.6 to 13.8, and n is an integer indicating the number of repeating units, the value of n being sufficient to provide a molecular weight of 10,000 to 300,000 for the polymer, the pour point depressant having the capacity to reduce the stable pour point to -35.degree. C., while being compatible with other additives such as viscosity index improvers and detergents.

Abstract: The present invention is directed to a dispersant additive comprising at least one adduct of (A) a polyolefin of 300 to 10,000 number average molecular weight substituted with at least 0.5 (e.g., from about 1 to 4) monocarboxylic acid producing moieties (preferably acid or ester moieties) per polyolefin molecule, (B) an amino-amine or thioamide-amine characterized by being a reaction product of at least a polyamine and an alpha, beta-unsaturated compound of the formula: ##STR1## wherein X is sulfur or oxygen, Y is --OR.sup.4, --SR.sup.4, or --NR.sup.4 (R.sup.5), and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and are hydrogen or substituted or unsubstituted hydrocarbyl.

Abstract: Hindered phenolic/phosphorodithioate-derived alcohol borates have been found to be effective multifunctional antioxidant/antiwear additives for lubricants and fuel.

Abstract: Copper salts of thiodipropionic acid derivatives provide excellent multifunctional/antioxidant characteristics for fuel composition when incorporated therein.