摘要:
Alkyl aryl sulfones are disclosed which are useful as high temperature and magnetic recording media lubricants. Also disclosed are lubricating mixtures containing the alkyl aryl sulfones, magnetic recording media containing the alkyl aryl sulfones, and a process for lubricating the magnetic recording media with the alkyl aryl sulfones.
摘要:
A lubricating composition which comprises a lubricating fluid and an aryl arenesulfonate in an amount sufficient to increase the lubricity of the lubricating fluid. A process for increasing the lubricity of a lubricating fluid which comprises adding an aryl arenesulfonate to the lubricating fluid in an amount greater than or equal to about 0.5 percent and less than or equal to about 5 percent based on the weight of the lubricating fluid.
摘要:
This invention relates to digestively hydrolyzable low calorie edible oil substitutes. These compounds have the organoleptic properties of normal triglycerides fats, but are lower in available calories. Specifically, the invention is directed to a composition of matter. The compositions are in one embodiment amides of dimer acids or trimer acids made from glycinates. The compounds are in part directed to amides based on the amino acid esters of the amino acid glycine. The utility of these compounds is in a low caloric edible oil.
摘要:
Cyanobisphenols of the formula: ##STR1## and their diglycidyl ethers may form linear thermoplastic polymers with low oxygen permeability and which contain cyano moieties that may subsequently be reacted to form useful active sites on the polymer.
摘要:
Novel phosphorus element-containing crosslinking agents for epoxy resin compositions based on an isomeric mixture of tris(2-hydroxyphenyl)-phosphine oxide compounds. Epoxy resins cured or crosslinked with the crosslinking agents of this invention yield non-halogenated, ignition resistant epoxy resin formulations. The ignition resistant epoxy resin formulations are advantageously used for making laminates for printed wiring boards and composite materials.
摘要:
The present invention is a method of preparing a 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt and resorcinol in the presence of a base and a reaction medium containing water and a water-miscible solvent at a temperature in the range of about -5.degree. C to about -60.degree. C. The present invention is also a method of preparing a 2-substituted 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt with a 2-substituted resorcinol. The 4,6-bisarylazoresorcinol or 2-substituted 4,6-bisarylazoresorcinol can then be hydrogenated to a 4,6-diaminoresorcinol, which is a precursor to polybisbenzoxazoles (PBOs), polymers which are useful as insulators, solar arrays, and tear-resistant gloves.
摘要:
The invention relates to a novel process for preparing 4,6-diaminoresorcinol, a precursor to polybenzoxazole, from resorcinol according to the following scheme. ##STR1## Resorcinol (I) is reacted with a di-tert-alkylating reagent to form a 4,6,-di-tert-alkylresorcinol (II), which is then halogenated to form a 2-halo-4,6-di-tert-alkylresorcinol (III). The 2-halo-4,6-di-tert-alkylresorcinol is nitrated in one of two ways to form a 2-halo-4,6-dinitroresorcinol (IV), which is then hydrogenated to from the 4,6-diaminoresorcinol.The invention also relates to a novel chemical composition-2-halo-4,6-di-tert-alkylresorcinol (III )--and a process for preparing same.
摘要:
A cyclophosphazene fluid composition containing organometallic or inorganic metal salts as antioxidants the antioxidants for use therein, and a method therefor, are disclosed herein. Suitable organometallic salts are formed by reacting a metal hydroxide with benzoic acid, substituted benzoic acids, or substituted phenols. The preferred inorganic metal salts effective for this purpose include various metal borates. The metal salt antioxidants are effective for reducing oxidation in the cyclophosphazene fluid in amounts of less than about 1% by weight of the overall composition.
摘要:
Disclosed is an aryl ether sulfone of the following formula: ##STR1## wherein R.sup.1 is independently in each occurrence hydrogen, alkyl, alkoxy, aryl, aryloxy, polyhaloaryl, polyhaloaryloxy, polyhaloalkylaryl, or polyhaloalkylaryloxy, R.sup.2 is independently in each occurrence hydrogen, alkyl, alkoxy, aryl, aryloxy, polyhaloaryl, polyhaloaryloxy, polyhaloalkylaryl, or polyhaloalkylaryloxy, and n is a whole number from 1 to 5. Also disclosed is a lubricant composition which comprises a lubricating fluid and an aryl ether sulfone as shown above, wherein the aryl ether sulfone is present in an amount sufficient to increase the lubricity of the lubricating fluid component.