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Inventor:
Halpern; Yuval
Address:
Skokie, IL
No. of patents:
31
Patents:












Patent Number Title Of Patent Date Issued
RE32472 Flame-retardant polymer compositions containing amine salts August 11, 1987
Polymer compositions containing minor proportions of polyvalent metal or amine salts of 5,5-bis-(bromomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinane. Aluminum, calcium and melamine salts are preferred.
6583310 Direct esterification of ammonium salts of carboxylic acids June 24, 2003
A non-catalytic process for producing esters, the process comprising reacting an ammonium salt of a carboxylic acid with an alcohol and removing ammonia from the reaction mixture. Selectivities for the desired ester product can exceed 95 percent.
5290432 Method of treating toxic aromatic halogen-containing compounds by electrophilic aromatic substit March 1, 1994
An improved method for detoxifying waste materials contaminated with halogenated aromatic hydrocarbons is disclosed. The method provides for detoxification of halogenated aromatic compounds by electrophilic aromatic substitution. The method also provides for the dehalogenation of the low
5178772 Process for destruction of metal complexes by ultraviolet irradiation January 12, 1993
Metal complexes and especially nickel EDTA is decomposed by adding an oxidizing agent to an aqueous solution containing metal complexes to define an oxidizable aqueous solution. The oxidizable aqueous solution is then exposed to a source of ultraviolet radiation in the range of from
5174893 Process for dehalogenation of contaminated waste materials December 29, 1992
An improved method for detoxifying waste materials contaminated with halogenated hydrocarbons is disclosed. The method achieves dehalogenation of such halogenated hydrocarbons in a manner as efficient as previous methods, but at a considerably lower cost. The economic advantages of the
5093011 Process for dehalogenation of contaminated waste materials March 3, 1992
An improved method for detoxifying waste materials contaminated with halogenated hydrocarbons is disclosed. The method achieves dehalogenation of such halogenated hydrocarbons in a manner as efficient as previous methods, but at a considerably lower cost. The economic advantages of the
5043054 Process for dehalogenation of contaminated waste materials August 27, 1991
An improved method for detoxifying waste materials contaminated with halogenated hydrocarbons is disclosed. The method achieves dehalogenation of such halogenated hydrocarbons in a manner as efficient as previous methods, but at a considerably lower cost. The economic advantages of the
5035840 Process for cleaning trace metals from EDTA July 30, 1991
A process for removing metal salts from an H.sub.4 EDTA precipitate by esterification with an esterification reagent to produce an esterification mixture comprising a solid metal salt an EDTA ester and thereafter separating the solid metal salt from the esterification mixture.
4778613 Spirodiphosphate-containing working substances October 18, 1988
A composition is provided which comprises a carrier medium and a spirodiphosphate described by the general formula: ##STR1## wherein X and X' are independently selected from the group consisting of oxygen and sulfur; and Z and Z' are independently selected from the group consisti
4760176 Aminocarboxylic acid-terminated polyoxy-alkylenes and process for the preparation thereof July 26, 1988
A composition, useful as an extreme pressure additive is provided wherein the composition comprises an aminocarboxylic acid-terminated polyoxyalkylene, wherein the polyoxyalkylene has at least seven oxyalkylene units.
4758683 Spirodiphosphoamidate compounds July 19, 1988
A spirodiphosphoamidate-type composition is provided, wherein the composition is represented by the general formula: ##STR1## wherein A and A' are independently selected from the group consisting of oxygen and sulfur; R.sup.1 and R.sup.3 are independently selected from the group
4740548 Polyimide thermoplastic protected from discoloration during thermal processing April 26, 1988
A thermoplastic composition is provided which comprises a polyimide with an effective amount of an alpha-hydroxyketone such as benzoin to prevent discoloration on thermal processing.
4738797 Aminocarboxylic acid-terminated polyoxyalkylene containing extreme pressure functional compositi April 19, 1988
An extreme pressure composition is provided wherein the composition comprises a carrier medium and an aminocarboxylic acid-terminated polyoxyalkylene having at least four oxyalkylene units.
4695601 Polyphenylene ether thermoplastic protected from discoloration during processing September 22, 1987
A thermoplastic composition is provided which comprises a polyphenylene ether such as the copolymer of 2,6-dimethylphenol with 2,3,6-trimethylphenol, with an effective amount of an alpha-hydroxyketone such as benzoin to prevent discoloration on thermal processing.
4551527 Salts of 5,5-bis-(bromomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinane and process for preparin November 5, 1985
A process for preparing polyvalent metal and amine salts of the indicated phosphorinane (an acid). The salts are isolated as such and are effective, in small proportions, to impart flame-retardant properties to polymers, especially to polypropylene and to styrenic polymers such as polyst
4518795 Bis(beta-pentabromophenoxyethyl) succinate, a flame retardant for ABS May 21, 1985
The di-ester of beta-pentabromophenoxyethanol and succinic acid, bis(beta-pentabromophenoxyethyl) succinate, is prepared by mono-ethoxylating pentabromophenol with ethylene oxide, then esterifying the resulting pentabromophenoxyethanol with succinic acid. The di-ester is a flame reta
4491644 Flame-retardant polymer compositions January 1, 1985
A flame-retarded polymer composition wherein the polymer constituent is an olefin polymer, a polymethyl acrylate or methacrylate, or polystyrene. The polymer is rendered flame-retardant by the presence of an amino-s-triazine salt of bis-(pentaerythritol phosphate) phosphoric acid.
4480093 Amines salts of phosphoric acid October 30, 1984
Amino-s-triazine salts of bis-(pentaerythritol phosphate) phosphoric acid. The salts are effective flame-retardant additives in a number of different types of polymers.
4478998 Process for preparing amine salts of phosphoric acids October 23, 1984
A process for preparing amino-s-triazine salts of bis-(pentaerythritol phosphate) phosphoric acid. The process involves reacting the particular amine with the corresponding acid chloride, i.e., the phosphorous oxychloride, in the presence of water. The salts are effective flame-retar
4456721 Flame-retarded acrylonitrile-butadiene-styrene copolymer compositions comprising bis(beta-pentab June 26, 1984
Compositions comprising ABS and bis(beta-pentabromophenoxyethyl) succinate have good flame retardance and are self-extinguishing in the UL-94 vertical burn test. The compositions may be further compounded with a conventional synergist such as antimony oxide.
4454064 Process for preparing pentaerythritol phosphate June 12, 1984
A process involving the reaction of pentaerythritol with phosphorus oxychloride. A solvent is used in the process, but not catalyst or amine (as a hydrogen chloride acceptor) is required.
4424172 5,5-Bis-(Bromomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinanes and process for preparing same January 3, 1984
A process for preparing 5,5-bis(halomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinanes by hydrolysis of the corresponding phosphoryl chloride. The product is effective, in small proportions, to impart flame-retardant properties to polymer compositions, especially polypropylene and sty
4365033 Flame-retardant polymer compositions containing metal or amine salts December 21, 1982
Polymer compositions containing minor proportions of polyvalent metal or amine salts of 5,5-bis-(bromomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinane. Aluminum, calcium and melamine salts are preferred.
4361664 Flame-retardant polymer compositions November 30, 1982
Polymer compositions containing minor proportions of a 5,5-bis-(halomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinane. The halo atom may be either chlorine or bromine.
4342682 Intumescent flame retardant thermoplastic polyurethane elastomer compositions August 3, 1982
Thermoplastic polyurethane elastomer compositions comprising a polyurethane elastomer, a pentate salt of an amino-s-triazine, and optionally a polyol are flame retardant and intumescent and may be compounded to be self-extinguishing.
4341694 Intumescent flame retardant compositions July 27, 1982
Compositions comprising 2,6,7-trioxa-1-phosphobicyclo [2.2.2.] octane -4-methanol-1-oxide and a nitrogen compound selected from the group melamine, ammeline, benzoguanidine, guanidine, urea and salts thereof, are intumescent and are readily adapted to flame retard a variety of dissim
4338246 Intumescent flame retardant thermoplastic polymethacrylate compositions July 6, 1982
Thermoplastic polymethacrylate compositions comprising (a) thermoplastic polymethacrylate such as polymethyl methacrylate, a pentate salt of an amino-s-triazine, and optionally a polyol are flame retardant and intumescent and may be compounded to be self-extinguishing.
4338245 Intumescent flame retardant thermoplastic polyester compositions July 6, 1982
Thermoplastic polyester compositions comprising a polyester such as polybutylene terephthalate, a pentate salt of an amino-s-triazine, and optionally a polyol are flame retardant and intumescent and may be compounded to be self-extinguishing.
4336184 Intumescent flame retardant thermoplastic polyphenylene ether compositions June 22, 1982
Thermoplastic polyphenylene ether compositions comprising a polyphenylene ether-styrenic resin blend, a pentate salt of an amino-s-triazine and optionally a polyol are flame retardant and intumescent and may be compounded to be self-extinguishing.
4201705 Intumescent flame retardant polyolefin compositions May 6, 1980
Polyolefin compositions comprising a polyolefin and a flame retarding amount of the pentate salt of an amino-s-triazine are intumescent and self-extinguishing and non-dripping.
4154930 Pentate salts of amino-s-triazines May 15, 1979
Pentate salts of amino-s-triazines having the formula ##STR1## wherein x is -NH.sub.2 or -OH are useful as flame retardants and foaming agents for polymers.










 
 
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