Abstract:
The object of the present invention is to provide a base oil for hydraulic oil suitably used for hydraulic systems having filters of which micropore diameter is 50 μm or less, which is capable to improve the decrease of flow in a hydraulic pump at low temperature like −30° C. or less and capable to normally operate the hydraulic systems. The invention also provides a hydraulic oil composition using the above base oil, especially a hydraulic oil composition suitably used for such as tractors, transmissions, and common systems thereof having the hydraulic systems. In order to achieve the object, provided is a base oil for hydraulic oil comprising mineral oil, wherein the mineral oil is defined by kinematic viscosity at 100° C.: 1.5˜6 mm2/s, pour-point: −10° C. or less, viscosity index: 100 or more, % CP: 70 or more, % CA: 2 or less, and aniline point: 106° C. or more; and wherein, the mineral base oil is treated by catalytic dewaxing process and/or contains tertiary carbon atoms at a ratio of 7.4% or more to the total carbon atoms.
Abstract:
The present invention provides finishes for elastic fiber, which produce elastic fiber yarn having superior antistatic, unwinding, package buildup performance and lubricity properties. The present finishes further minimize fly sticking on the elastic fiber during the knitting operation of elastic fiber yarn and cotton spun yarn.The finishes of the present invention contain 80 to 99.99 parts by weight of at least one base component selected from the group consisting of silicone oils, mineral oils and ester oils, 0.01 to 10 parts by weight of amino-modified silicones and 0.0001 to 10 parts by weight of phosphate esters containing an acidic hydroxyl group and at least one hydrocarbon or oxyalkylene group per molecule.The elastic fiber of the present invention is characterized with the application of the finish in an amount of 0.1 to 15 weight percent of the fiber.
Abstract:
There are disclosed macrocyclic and polycyclic polyamine lubricating oil additives formed by cyclodehydration of reaction products of hydrocarbon substituted succinic anhydrides or carboxylic acids with poly 3-amino propyl compounds or by acylation of macrocyclic polyamines and polycyclic polyamines with hydrocarbon substituted succinic anhydride or carboxylic acids. These compounds are useful as dispersants and dispersants-V.I. improvers in both gasoline and diesel engine lubricating oil compositions and are also useful fuel additives.
Abstract:
Thio-bis-(hydrocarbyl substituted diacid materials), such as thio-bis-(polyalkyl lactone acid) and/or their precursors, the adducts of sulfur chloride and unsaturated diacid materials, e.g., 4,8-bis-polyalkyl-4,8-dichloro-6-thiaundecane-1,2,10,11-tetracarboxylic acid bis-anhydride and their dehydrochlorinated analogs, when esterified with an alcohol, preferably a polyol, such as pentaerythritol, polypentaerythritol or a polyalkylene glycol with or without acid catalysts and/or metal template ragents yield thio-bis-(alkyl lactone acid esters) and thio-bis-(hydrocarbyl diacid esters) which can be characterized in part, as macrocyclic and/or macrocyclic-like structures, are useful as stable additive in lubricating compositions, e.g. as varnish inhibiting dispersants for lubricating oils and fuels.
Abstract:
A microbicidal/microbistatic compositions for industrial use, which comprises 4,5-dichloro-1,2-dithiol-3-one and 1,2-benzisothiazolin-3-one, and a method of killing or inhibiting the growth of microbes, which comprises adding 4,5-dichloro-1,2-dithiol-3-one and 1,2-benzisothiazolin-3-one simultaneously or at intervals to a system to be controlled microbicidally/microbistatically.
Abstract:
Process of sulfurizing a blend of 90 to 50 and preferably 88 to 70 parts by volume of triglyceride such as lard oil and 10 to 50 and preferably 12 to 30 parts by volume of an ethylenically unsaturated hydrocarbon containing 2 to 24 carbon atoms. The sulfurization is carried out using elemental sulfur. Simultaneous sulfurization and chlorination may be effected by reacting with sulfur monochloride. Phosphosulfurization may also be carried out by addition of small amounts of a phosphorus sulfide to the sulfurized blend followed by heating at 180.degree. F. to 250.degree. F. for from 30 minutes to 10 hours to effect phosphosulfurization. The sulfurization or phosphosulfurization involves reacting at from 330.degree. F. to 445.degree. F. for 20 minutes to 10 hours followed by blowing with a gas at from 125.degree. F. to 250.degree. F. for 30 minutes to 20 hours to remove hydrogen sulfide. The simultaneous sulfurization and chlorination reaction is carried out at from 90.degree. F. to 280.degree. F. for from 20 minutes to 10 hours followed by blowing with a gas at from 125.degree. F. to 250.degree. F. for 30 minutes to 20 hours. The sulfurized oils contain from 7.5 to 25 weight percent sulfur as based on the blend of olefin and triglyceride.
Abstract:
Lubricant compositions are provided containing antiwear improving amounts of a bis-oxazoline having an alkyl group containing from about 4 to about 24 carbon atoms.
Abstract:
A detergent additive for lubricating oils is prepared by reacting an alkyenolsulfide with an oxide or hydroxide of a earth-alkali metal and carbonating the reaction product with carbon dioxide, the reaction being carried out in the presence of a promoter, selected in the class of the organic nitrogen compounds, and possibly of a co-promoter; the temperature and the time of the reaction are depending on whether the co-promoter is present. The resulting product shows improved detergency and flow-ability properties.
Abstract:
Compositions made by reacting (I) a metal phenoxide substituted with at least one hydrocarbon-based group of at least about 30 carbon atoms with (II) a carboxylic acid reagent containing from one to about three carboxyl-based groups and a halogen-substituted hydrocarbon-based aliphatic or alicyclic group containing a halogen atom are useful as additives for lubricants and normally liquid fuels. Analogous thiophenoxide-based compositions are similarly useful. These compositions are also useful as intermediates for the preparation of other useful additive compositions through their reaction with alcohols, amino compounds, reactive and small ring heterocycles.
Abstract:
New 2-amino-cyclopent-1-ene-thiocarboxylic acid-disulfides of the formula, ##STR1## wherein R is a C.sub.1-6 alkyl group having optionally a C.sub.1-4 alkoxy, hydroxy, carboxy and/or amino substituent, a C.sub.2-4 alkenyl group, or a C.sub.3-8 cycloalkyl group, are prepared by oxidizing the respective 2-amino-cyclopent-1-ene-dithiocarboxylic acids of the formula, ##STR2## wherein R is as defined above. The compounds of the formula (I) exert dopamine-.beta.-hydroxylase inhibiting effects and can be applied in therapy.