Patents by Inventor Nicolai A. Favstritsky
Nicolai A. Favstritsky has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5728760Abstract: A method of making flame retarded polyurethanes by including a bromobenzoate compound in the polyurethane mixture. Also disclosed is a method of making flame retarded polyvinyl chlorides, unsaturated polyesters and epoxy resins by incorporating a bromobenzoate compound into the polymer system. The bromobenzoate compounds of the invention may also be used as plasticizers for PVC and rubber.Type: GrantFiled: April 11, 1995Date of Patent: March 17, 1998Assignee: Great Lakes Chemical CorporationInventors: Richard S. Rose, Bhabatosh Bhattacharya, Nicolai A. Favstritsky
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Patent number: 5637757Abstract: A method of preparing tetrabromobenzoate compounds from tetrabromophthalic anhydride by reacting tetrabromophthalic anhydride with alcohol in the presence of a decarboxylation catalyst. The reaction may be carried out in an excess of alcohol, or with a near stoichiometric amount of alcohol by performing the reaction in an inert solvent.Type: GrantFiled: April 11, 1995Date of Patent: June 10, 1997Assignee: Great Lakes Chemical CorporationInventors: John E. Hill, Nicolai A. Favstritsky, Rastko I. Mamuzic, Bhabatosh Bhattacharya
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Patent number: 5620585Abstract: A process for leaching gold, silver, platinum and palladium wherein an aqueous leaching solution containing bromine and bromide ion contacts a precious metal source to produce an aqueous leachate. A precursor composition for producing an aqueous leaching solution for leaching gold, silver, platinum and palladium. A process for electrogenerating bromine and a process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated and contacts a precious metal source to produce an aqueous leachate. A process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated from a solution containing chloride ions and bromide ions.Type: GrantFiled: June 6, 1995Date of Patent: April 15, 1997Assignee: Great Lakes Chemical CorporationInventors: Ahmad Dadgar, Jonathan N. Howarth, Rodney H. Sergent, Nicolai A. Favstritsky, Julie A. McKeown, Dennis W. Borden, Brent M. Sanders, Jane Likens
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Patent number: 5607619Abstract: A process for leaching gold, silver, platinum and palladium wherein an aqueous leaching solution containing bromine and bromide ion contacts a precious metal source to produce an aqueous leachate. A precursor composition for producing an aqueous leaching solution for leaching gold, silver, platinum and palladium. A process for electrogenerating bromine and a process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated and contacts a precious metal source to produce an aqueous leachate. A process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated from a solution containing chloride ions and bromide ions.Type: GrantFiled: June 7, 1995Date of Patent: March 4, 1997Assignee: Great Lakes Chemical CorporationInventors: Ahmad Dadgar, Jonathan N. Howarth, Rodney H. Sergent, Nicolai A. Favstritsky, Julie A. McKeown, Dennis W. Borden, Brent M. Sanders, Jane Likens
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Patent number: 5565538Abstract: Flame retardant additive for plastics, compositions containing the additive, and methods for preparing the additives and compositions. The additives include a halostyrene-glycidyl (meth)acrylate copolymer. The compositions include a thermoplastic substrate requiring flame retardancy and copolymers of a halostyrene and glycidyl (meth)acrylate.Type: GrantFiled: September 21, 1994Date of Patent: October 15, 1996Assignee: Great Lakes Chemical CorporationInventors: Gurudas Zingde, Nicolai A. Favstritsky, Ray W. Atwell
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Patent number: 5484839Abstract: Flame retardant latex compositions are disclosed which include natural or synthetic latex grafted with ring-halogenated, ethylenically unsaturated aromatic monomers. The graft latex is used alone or in combination with non-grafted natural or synthetic latex. The compositions are useful as coatings for a wide variety of applications, including fabric backcoatings, carpetings, paints, adhesives, sealants, caulks, non-woven binders and so on.Type: GrantFiled: May 18, 1994Date of Patent: January 16, 1996Assignee: Great Lakes Chemical Corp.Inventors: Jin-liang Wang, Nicolai A. Favstritsky
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Patent number: 5461077Abstract: A method for controlling diseases in plants, comprising applying to the roots or leaves of the plant a water-soluble, mono- or di-substituted ammonium perhalide of the formula: ##STR1## where R.sub.1 and R.sub.2 are independently hydrogen, hydroxyethyl, alkyl, cyclic alkyl, (alpha, omega)-alkyl, alkyl ether, polyether, heterocyclic ring-substituted alkyl, and halogenated alkyl; X is chlorine, bromine or iodine; n is 2 to 6; and only one of R.sub.1 and R.sub.2 is hydrogen.In another aspect of the invention, plant seeds are disinfected by applying the water-soluble, mono- or di-substituted ammonium perhalide to the seeds.Type: GrantFiled: October 21, 1993Date of Patent: October 24, 1995Assignee: Great Lakes Chemical Corp.Inventors: Dennis M. Borden, Nicolai A. Favstritsky
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Patent number: 5459121Abstract: A method for reducing plant water loss by closing stomatal openings and reducing the transpiration rate. In particular, a water loss reducing composition made of an osmo-adjusting solute such as sorbitol or xylitol is applied to plants. The solution is applied to the root zone by drenching regularly or prior to water deficiency, and preferably includes between about 0.5 and about 25 weight percent of the water loss reducing and conditioning agent.Type: GrantFiled: April 21, 1994Date of Patent: October 17, 1995Assignee: Great Lake Chemical CorporationInventors: Charles C. Shin, Nicolai A. Favstritsky, Brent M. Sanders
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Patent number: 5438096Abstract: Improved flame retardant polymer latices are disclosed which comprise copolymers of ring-halogenated aromatic monomer units and alkyl acrylate/methacrylate monomer units, and which may additionally include at least one other monomer. In a first embodiment, the latices include ring-brominated aromatic monomer units and alkyl acrylate and/or alkyl methacrylate monomer units. In a second embodiment, the latices include these first two types of monomer units and further include third monomer units from unsaturated esters of saturated carboxylic acids, halogen-free aromatic monomers or unsaturated carboxylic or dicarboxylic acid monomers. In a third embodiment, the latices include four monomer units, namely ring-brominated aromatic monomer units, alkyl acrylate/methacrylate monomer units, halogen-free aromatic monomer units and unsaturated carboxylic or dicarboxylic acid monomer units.Type: GrantFiled: May 16, 1994Date of Patent: August 1, 1995Assignee: Great Lakes Chemical CorporationInventors: Jin-liang Wang, Nicolai A. Favstritsky, Richard S. Rose
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Patent number: 5418211Abstract: Osmo-adjusting solutes, particularly polyols and/or monosaccharides, are used to control the growth of plants. In particular, aqueous solutions of sorbitol or xylitol are used to reduce plant height and increase stem diameter. The solutions preferably include between about 0.05 and about 25 weight percent of the osmo-adjusting solute, and are applied to the root zone by drenching regularly or prior to transplanting. The solutions are also shown to be effective for conditioning plants for hardiness against certain environmental and handling stresses.Type: GrantFiled: April 21, 1994Date of Patent: May 23, 1995Assignee: Great Lakes Chemical CorporationInventors: Charles C. Shin, Nicolai A. Favstritsky, Brent M. Sanders
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Patent number: 5380802Abstract: A flame-retarded polyolefin fiber made of a thermoplastic polyolefin and a graft copolymer composition represented by tile formula: ##STR1## in which PP is polypropylene, and S represents grafted side chains having halogenated monomeric units of the formula: ##STR2## wherein x=1 to 4, R.sub.8 is H or CH.sub.3, R.sub.9 is H or a C.sub.1-4 alkyl group, and R.sub.10 is Br or Cl. In an alternate embodiment the flame-retarded polyolefin fiber further includes a halogenated bisphenol derivative represented by the formula: ##STR3## in which R.sub.1 to R.sub.4 are H, CH.sub.3 or a halogen, R.sub.5 is H, dihaloethyl, dihalopropyl or dihalobutyl, and A is a single bond, O, CO, S, SO.sub.2 or C(R.sub.6)(R.sub.7), where R.sub.6 and R.sub.7 are H or a C.sub.1-4 alkyl.Type: GrantFiled: December 9, 1992Date of Patent: January 10, 1995Assignee: Great Lakes Chemical CorporationInventors: Enrico J. Termine, Ray W. Atwell, Harry A. Hodgen, Nicolai A. Favstritsky
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Patent number: 5369202Abstract: A process for the solventless polymerization of brominated styrenes includes blending monomers of brominated styrenes with a polymerization initiator, feeding the monomer/polymerization initiator mix into a prepolymerizer wherein the monomers begin to polymerize, and feeding the monomer/polymerization initiator mix and the partially polymerized bromostyrene into a screw-type extruder to drive the polymerization to a high degree of completion in a short period of time. Optionally, the monomers may be preheated before mixing with the initiator, or a heater may be included in the prepolymerizer.Type: GrantFiled: March 22, 1994Date of Patent: November 29, 1994Assignee: Great Lakes Chemical CorporationInventors: Ray W. Atwell, Harry A. Hodgen, William R. Fielding, Nicolai A. Favstritsky, Enrico J. Termine
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Patent number: 5346938Abstract: Smoke suppressed flame retardant thermoset resin compositions comprise smoke suppressant bicyclic phosphate compound(s), flame retardant(s) and unsaturated polyester or other thermoset materials. These compositions exhibit a reduced tendency to smoke under conditions of burning.Type: GrantFiled: July 3, 1991Date of Patent: September 13, 1994Assignee: Great Lakes Chemical Corp.Inventors: Enrico J. Termine, Nicolai A. Favstritsky, Kevin G. Taylor
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Patent number: 5328983Abstract: The invention relates to a process for the purification of brominated styrenic homo-polymers and co-polymers. The purification process reduces or removes contained aliphatic bromine, and free bromine resulting from the reaction of the brominated reagent with the polystyrene backbone. In addition, the method optionally removes occluded inorganic halide impurities from the polymer. These impurities are considered undesirable due to their adverse effects on thermal aging and stability of the final end use resin formulations.Type: GrantFiled: March 2, 1992Date of Patent: July 12, 1994Assignee: Great Lakes Chemical CorporationInventors: Nicolai A. Favstritsky, William R. Fielding, John L. Sands, Robert J. Stahl
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Patent number: 5304618Abstract: A process for the solventless polymerization of brominated styrenes includes blending monomers of brominated styrenes with a polymerization initiator, feeding the monomer/polymerization initiator mix into a prepolymerizer wherein the monomers begin to polymerize, and feeding the monomer/polymerization initiator mix and the partially polymerized bromostyrene into a screw-type extruder to drive the polymerization to a high degree of completion in a short period of time. Optionally, the monomers may be preheated before mixing with the initiator, or a heater may be included in the prepolymerizer.Type: GrantFiled: July 22, 1993Date of Patent: April 19, 1994Assignee: Great Lakes Chemical CorporationInventors: Ray W. Atwell, Harry A. Hodgen, William R. Fielding, Nicolai A. Favstritsky, Enrico J. Termine
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Patent number: 5296306Abstract: Flame retardant latex coatings are disclosed which include natural or synthetic latex grafted with ring-halogenated, ethylenically unsaturated aromatic monomers. The grafted latex is used alone or in combination with non-grafted natural or synthetic latex. The coatings are useful for a wide variety of applications, including fabric backcoatings, carpetings, paints, adhesives, sealants, caulks, non-woven binders and so on.Type: GrantFiled: November 18, 1992Date of Patent: March 22, 1994Assignee: Great Lakes Chemical Corp.Inventors: Jin-liang Wang, Nicolai A. Favstritsky, Richard S. Rose
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Patent number: 5290636Abstract: Improved flame retardant latex coatings are disclosed which comprise copolymers of ring-halogenated aromatic monomer units and alkyl acrylate/methacrylate monomer units, and which may additionally include at least one other monomer. In a first embodiment, the coatings include ring-brominated aromatic monomer units and alkyl acrylate and/or alkyl methacrylate monomer units. In a second embodiment, the coatings include these first two types of monomer units and further include third monomer units from unsaturated esters of saturated carboxylic acids, halogen-free aromatic monomers or unsaturated carboxylic or dicarboxylic acid monomers. In a third embodiment, the coatings include four monomer units, namely ring-brominated aromatic monomer units, alkyl acrylate/methacrylate monomer units, halogen-free aromatic monomer units and unsaturated carboxylic or dicarboxylic acid monomer units.Type: GrantFiled: April 29, 1992Date of Patent: March 1, 1994Assignee: Great Lakes Chemical Corp.Inventors: Richard S. Rose, Jin-liang Wang, Nicolai A. Favstritsky, David E. May, David J. Honkomp
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Patent number: 5276006Abstract: Aqueous plant cryoprotectant composition containing between about 0.005 and 25 wt. % tetrahydrofurfuryl alcohol, tetrahydrofurfuryl amine or mixtures thereof and method of increasing the resistance of plant tissue to damage caused by freezing conditions comprising applying to the plant tissue surfaces at ambient non-freezing temperatures an aqueous solution containing an effective amount of tetrahydrofurfuryl alcohol, tetrahydrofurfuryl amine or mixtures thereof.Type: GrantFiled: August 13, 1992Date of Patent: January 4, 1994Assignee: Great Lakes Chemical Corp.Inventors: Charles C. Shin, Nicolai A. Favstritsky, Ahmad Dadgar
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Patent number: 5268017Abstract: Methods and compositions for the protection of plant tissue from damage upon exposure to air pollutants, and to assist plant tissue in recovering from air pollution injury, include the application of an effective amount of stress-protectant compositions selected from the group consisting of tetrahydrofurfuryl alcohol, tetrahydrofurfuryl amine and mixtures thereof. The compositions are applied as aqueous solutions containing between about 0.005 and about 25 wt % of the stress-protectant components. Surfactants may be included to improve application of the compositions to the plants.Type: GrantFiled: March 2, 1992Date of Patent: December 7, 1993Assignee: Great Lakes Chemical CorporationInventors: Charles C. Shin, Nicolai A. Favstritsky
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Patent number: RE35308Abstract: A block copolymer of polyalkylene and halogenated polystyrene comprises the formula:S'--A--(A--S').sub.min which m is 0, 1, 3 or 4, A is a saturated polyalkylene, and S' is a nuclear brominated polystyrene having from about 0.5 to about 5 bromines per styrene unit. The polystyrene blocks are substantially free of halogen other than bromine and chlorine, and the polyalkylene is substantially free of halogen. The compositions retain the elastomeric properties of the non-halogenated form of the compounds while having significantly reduced flammability.Type: GrantFiled: March 13, 1995Date of Patent: July 30, 1996Assignee: Shell Oil CompanyInventors: Nicolai A. Favstritsky, Rastko I. Mamuzic