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Elf Atochem North America, Inc. Patents
Assignee:
Elf Atochem North America, Inc.
Address:
Philadelphia, PA
No. of patents:
188
Patents:


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Patent Number Title Of Patent Date Issued
RE35730 Apparatus and process to regenerate a trivalent chromium bath February 17, 1998
A process and apparatus for regenerating a plating bath comprising trivalent chromium cations (a trivalent chromium bath). The bath can be continuously, or more preferably, periodically with an ion exchange resin, preferably a cation exchange resin. A useful apparatus comprises a plating
6166235 Heterogeneous organotin catalysts December 26, 2000
This invention provides: (a) new organotin functionalized silanes: (b) a solid prepared by chemically bonding organotin functionalized silanes to a solid inorganic support containing surface hydroxy groups: (c) a solid catalyst prepared from said supported organotin functionalized silane
6159346 Inhibition of 141b decomposition December 12, 2000
Inhibition of the formation of unsaturated carbon compounds during the heating of 141b involving the addition of various inhibitors such as dialkylhydroxylamine and/or the use of a vessel made of a nickel alloy.
6136877 142b/124 blowing agent blends October 24, 2000
Nonflammable foam blowing agent blends of 142b or 124 are provided, as are polyol premixes and polyurethane foam compositions containing such blends.
6124510 1234ze preparation September 26, 2000
Preparation of cis/trans 1234ze monomer is provided, by dehydrofluorination of 245fa using an alkaline solution or using a gas phase catalyzed process.
6124380 Metal containing e-coat catalysts optionally with tin catalysts September 26, 2000
The invention comprises a curable composition comprising: (i) a blocked reactive component wherein the blocked reactive component is a blocked isocyanate or a blocked isothiocyanate; (ii) a functional compound reactive with the blocked reactive component, the functional compound cont
6120908 Strengthening flat glass by edge coating September 19, 2000
A method is described for strengthening or restoring strength to a flat brittle oxide substrate which includes the steps of coating the edges of the brittle oxide substrate with a strengthening composition without coating a significate portion of the flat surfaces. The strengthen brittle
6117917 Blowing agent blends and use thereof September 12, 2000
B-side compositions comprising a polyol and a gaseous blowing agent comprising 124 dissolved in the polyol are provided, as are processes for producing closed-cell polyurethane or polyisocyanurate polymer foam comprising contacting an isocyanate-containing component with a polyol com
6117914 142b/124 blowing agent blends September 12, 2000
Nonflammable foam blowing agent blends of 142b or 124 are provided, as are polyol premixes and polyurethane foam compositions containing such blends.
6099624 Nickel-phosphorus alloy coatings August 8, 2000
Nickel phosphorus alloys can be electroplated from an aqueous acidic solution containing nickel alkane sulfonate and phosphorus acid.
6083874 Composition and method for plant desiccation July 4, 2000
This invention relates to an improved composition of matter for and method of desiccating plants such as, for example, cotton. More particularly, this invention relates to an improved desiccating composition comprising a solution of endothall, an ammonium salt, a glutamine synthetase inh
6083627 Powder coatings from mixtures of thermoplastic vinylidene fluoride based resins and polyamide re July 4, 2000
Pigmented and unpigmented polymeric resin blends containing up to 45 weight percent polyvinylidene fluoride based polymer and either polyamide 11 or polyamide 12 having particular usefulness in powder coating of objects are disclosed.
6074985 Fluorination catalysts June 13, 2000
A supported Lewis acid catalyst such as antimony V on a fluorine-treated moisture-free activated carbon support is provided, as are fluorination processes using such a catalyst.
6066760 Process for the preparation of alkane sulfonic acid and alkane sulfonyl chloride May 23, 2000
A process is disclosed for the efficient production of high purity alkane sulfonic acid and/or alkane sulfonyl chloride product wherein a compound of the formula RSX, where X is hydrogen or --SR.sup.1 and R and R.sup.1 are alkyl radicals is continuously reacted with chlorine in aqueous
6063969 Preparation of 142 May 16, 2000
A process for the preparation of 142 is provided, wherein 1130 is fluorinated in the gas phase in the presence of a catalyst which is a supported or unsupported fluorinated salt of one or more of chromium, iron, niobium, nickel, antimony, tin, tantalum or titanium. 142 is a known foa
6059933 Inhibition of 141b decomposition May 9, 2000
Inhibition of the formation of unsaturated carbon compounds during the heating of 141b involving the addition of various inhibitors such as butylene oxide and/or the use of a vessel made of a nickel alloy.
6042893 Metal containing E-coat catalysts optionally with tin catalysts March 28, 2000
The invention comprises a curable composition comprising: (i) a blocked reactive component wherein the blocked reactive component is a blocked isocyanate or a blocked isothiocyanate; (ii) a functional compound reactive with the blocked reactive component, the functional compound cont
6028128 Metal containing E-coat catalysts optionally with tin catalysts February 22, 2000
The invention comprises a curable composition comprising: (i) a blocked reactive component wherein the blocked reactive component is a blocked isocyanate or a blocked isothiocyanate; (ii) a functional compound reactive with the blocked reactive component, the functional compound cont
6018000 Powder coatings from mixtures of thermoplastic vinylidene fluoride based resins and polyamide re January 25, 2000
Pigmented and unpigmented polymeric resin blends containing up to 45 weight percent polyvinylidene fluoride based polymer and either polyamide 11 or polyamide 12 having particular usefulness in powder coating of objects are disclosed.
6013846 Azeotrope of HF and 1233zd January 11, 2000
An azeotrope containing HF and 1233zd is provided, as are methods for separating this azeotrope from mixtures of HF and 1233zd which are HF-rich or 1233zd-rich and methods for making use of the azeotrope and separation methods to improve processes for preparing 1233zd, an intermediate us
6013333 Method for strengthening a brittle oxide substrate January 11, 2000
A method is described for strengthening or restoring strength to a brittle oxide substrate which includes the steps of coating the brittle oxide substrate with an aqueous solution containing a silane-based composition, and curing the coating to form a transparent layer on the brittle oxi
6001900 Metal containing e-coat catalysts optionally with tin catalysts December 14, 1999
The invention comprises a curable composition comprising: (i) a blocked reactive component wherein the blocked reactive component is a blocked isocyanate or a blocked isothiocyanate; (ii) a functional compound reactive with the blocked reactive component, the functional compound cont
5985967 Composition based on high molecular weight organotin maleates which can be used to stabilize the November 16, 1999
The invention relates to a composition containing high molecular weight organotin maleates as obtained by reacting a high molecular alcohol or epoxyalkane with maleic anhydride and by then bringing the mixture thus obtained into contact with a dialkyltin oxide.The invention also relates
5981787 Peroxyoxalates derived from hydroxy-hydroperoxides November 9, 1999
Novel peroxyoxalate compositions of Structure A, ##STR1## and use of the novel monoperoxyoxalates of Structure A as initiators for polymerizing ethylenically unsaturated monomers and for curing of unsaturated polyester resins are disclosed.
5981685 Organotin sulfonate catalysts and their manufacture November 9, 1999
Dual cure organotin salts of strong organic acids, the use of such salts as catalysts and an improved process for producing the catalysts are provided. The catalysts are capable of effectively catalyzing esterification and transesterification reactions and urethane, silicone, melamin
5958992 Blowing agent blends September 28, 1999
Foam blowing agents blends of 10-90% of n- and/or i-pentane with 90-10% of 142b or 124 are provided, as are polyol premixes and polyurethane foam compositions containing such blends.
5951161 Apparatus for preparation of tank mixtures for heat sensitive biofungicides September 14, 1999
An apparatus for preparing a biofungicide mixture for application to harvested fruit. The apparatus includes a storage container for holding a dry biofungicide component. The storage container is attached to a conduit which has a screw conveyor rotatably disposed within it for transferri
5948920 Epoxides from dicyclopentadiene--unsaturated oil copolymers September 7, 1999
Partially epoxidized compounds obtained from Diels Alder adducts of dicyclopentadiene with fatty oils having a iodine number of 70 or greater and their transesterification products with C.sub.1 to C.sub.10 alkanols are disclosed. 100% solids radiation and heat curable coating composition
5948843 Lithographic ink September 7, 1999
A lithographic printing ink contains an ester-modified carboxyl-containing copolymer as a pigment dispersant. The ester-modified carboxyl-containing copolymer is the reaction product of a long chain alcohol and a styrene maleic anhydride copolymer, wherein at least 35% of the carboxyl gr
5944879 Nickel hypophosphite solutions containing increased nickel concentration August 31, 1999
This invention relates to aqueous solutions containing Ni cation and hypophosphite anion which have a Ni cation concentration greater than 36 grams/liter. Such solutions have utility in electroless nickel plating baths and processes as make-up solutions and replenishing solutions. The
5922493 Polymeric electrode and electrolyte article of manufacture July 13, 1999
An article of manufacture is disclosed comprising an electrochemical cell having a positive electrode, an absorber-separator and a negative electrode wherein at least one of the electrodes or absorber-separator comprises a porous polyvinylidene fluoride. The porous polyvinylidene flu
5919852 Low smoke, flame retardant, VDF polymers July 6, 1999
Calcium tungstate modified, VDF polymers having a reduced smoke-generating capability upon ignition and an increased resistance to ignition.
5912304 Processes providing improved scorch retardation during compounding of elastomers and thermoplast June 15, 1999
A crosslinkable composition of a polymeric thermoplastic and/or elastomeric material which is susceptible to scorching when processed at elevated temperatures, prior to crosslinking, in the presence of a free radical initiator, is protected against such scorching by the incorporation
5910373 Metal containing E-coat catalysts optionally with tin catalysts June 8, 1999
The invention comprises a curable composition comprising: (i) a blocked reactive component wherein the blocked reactive component is a blocked isocyanate or a blocked isothiocyanate; (ii) a functional compound reactive with the blocked reactive component, the functional compound cont
5902871 Catalyst for low temperature cure of blocked isocyanates May 11, 1999
The present invention comprises a curable composition comprising:(i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound containing reactive hydrogen;(iii) a triorganotin catalyst for promoting the reaction of the blocked reacti
5895825 Preparation of 1,1,1,3,3-pentafluoropropane April 20, 1999
A process for the preparation of 245fa is provided, wherein 1233zd is first fluorinated to 1234ze, followed by fluorination of 1234ze to 245fa. 245fa is a known foam blowing agent and refrigerant.
5880178 Catalyst for low temperature cure of blocked isocyanates March 9, 1999
The present invention comprises a curable composition comprising:(i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound containing reactive hydrogen;(iii) a triorganotin catalyst for promoting the reaction of the blocked reacti
5877359 Uncatalyzed liquid phase fluorination of 1230ZA March 2, 1999
An uncatalyzed liquid phase process is provided for the preparation of oligomer free 1233zd via the fluorination of 1230za with a high molar excess of HF. The 1233zd is a known intermediate useful for preparing 245fa.
5876624 Scorch retarding crosslinking compositions comprising a hydroquinone, a sulfur accelerator, a co March 2, 1999
A crosslinkable composition of a polymeric thermoplastic and/or elastomeric material which is susceptible to scorching when processed at elevated temperatures, prior to crosslinking, in the presence of a free radical initiator, is protected against such scorching by the incorporation
5869580 Process for the preparation of crosslinkable thermoplastic and/or elastomeric polymer compositio February 9, 1999
A crosslinkable composition of a polymeric thermoplastic and/or elastomeric material which is susceptible to scorching when processed at elevated temperatures, prior to crosslinking, in the presence of a free radical initiator, is protected against such scorching by the incorporation
5866712 Oxalic acid peroxide compositions and uses February 2, 1999
A novel peroxide composition of Structure A, ##STR1## and use of the novel oxalic acid peroxide composition of Structure A as an initiator; a) for curing of unsaturated polyester resins, b) for polymerizing ethylenically unsaturated monomers, c) for crosslinking of polyolefins, d
5859165 Metal containing E-coat catalysts optionally with tin catalysts January 12, 1999
The invention comprises a curable composition comprising:(i) a blocked reactive component wherein the blocked reactive component is a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound reactive with the blocked reactive component, the functional compound containing rea
5854188 Water in oil emulsions containing pyrrole December 29, 1998
Improvements in the rate of stripping of alkaline water-in-oil emulsions by incorporating in the organic phase thereof an effective amount of pyrrole.
5851972 Water in oil emulsions containing anisole December 22, 1998
Improvements in the rate of stripping of benzyl alcohol containing water-in-oil emulsions by incorporating in the organic phase thereof an effective amount of anisole.
5849214 Scorch extending curing/crosslinking compositions December 15, 1998
A crosslinkable composition of a polymeric thermoplastic and/or elastomeric material which is susceptible to scorching when processed at elevated temperatures, prior to crosslinking, in the presence of a free radical initiator, is protected against such scorching by the incorporation
5837782 Bis(mono-and-diperoxyoxalates) derived from dihydroperoxides and alkyl and alkylperoxy halooxala November 17, 1998
A novel bis(mono- or diperoxyoxalate) composition of Structure A, ##STR1## and use of the novel bis(mono- or diperoxyoxalate) composition as an initiators for curing of unsaturated polyester resins and for polymerizing ethylenically unsaturated monomers are disclosed.
5821209 Water in oil emulsions containing a terpene, benzyl alcohol, and wax October 13, 1998
Improvements in the retardation of water evaporation from benzyl alcohol containing water-in-oil emulsions by incorporating in the organic phase thereof an effective amount of a terpene.
5817612 Aqueous benzyl formate paint stripper October 6, 1998
Aqueous paint stripper formulations containing a solvent system comprised of an ester such as benzyl formate and methods for using the same to strip paint.
5811603 Gas phase fluorination of 1230za September 22, 1998
A process for the fluorination of 1230za is provided, wherein 1230za is contacted with HF in the gas phase in the presence of an aluminum fluoride or chromium-based fluorination catalyst under conditions sufficient to produce a reaction mixture containing 1233zd, 1234ze and 245fa. 245fa
5811481 Lithographic ink September 22, 1998
A lithographic printing ink contains an ester-modified carboxyl-containing copolymer as a pigment dispersant. The ester-modified carboxyl-containing copolymer is the reaction product of a long chain alcohol and a styrene maleic anhydride copolymer, wherein at least 35% of the carboxyl gr
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