Patents Assigned to Elf Atochem North America, Inc.
  • Unsaturated peroxide compositions, polymeric-peroxides derived therefrom and their uses
    Patent number: 5475072
    Abstract: Novel unsaturated peroxide compositions of Structure A,R--Q--X--R.sub.1 Apolymeric-peroxide compositions derived from them and their uses are disclosed.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: December 12, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Jose Sanchez, Leonard H. Palys, Daryl L. Stein, John S. Yormick
  • Hindered amine light stabilized polymer compositions
    Patent number: 5473001
    Abstract: Hindered amine light stabilizers are provided in which the hindered amine is contained in a unit of formula ##STR1## where X is ##STR2## and R.sup.1, R.sup.2, R.sup.3 and A are as defined as in the Summary of the Invention. Unique polymeric and non-polymeric compounds containing this unit are useful as additives for the stabilization of polymeric compositions which are normally subject to thermal, oxidative or actinic light degradation.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: December 5, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: Terry N. Myers
  • Functionalized peroxides for polymerization reactions
    Patent number: 5466855
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: November 14, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Use of amino or hydrazino peroxides in preparing and curing polymers
    Patent number: 5457162
    Abstract: This invention relates to novel reactive amino or hydrazino peroxides (hereinafter generally referred to as "AHP's") and derivatives all having a Structure A: ##STR1## in which the definitions of P, R11, R22, X, Q and x, y and z are given in the Summary Of The Invention section, for example, 4,4-di-(t-butylperoxy)pentanohydrazide (I-1), and the use of these novel compounds in curing unsaturated polyester resins, in initiating polymerization of ethylenically unsaturated monomers, for modifying rheology, for crosslinking and curing olefin polymers and elastomers, for producing novel graft and block copolymers, and for producing novel polymers with covalently bound performance additive functions.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: October 10, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: Jose Sanchez
  • Process for the manufacture of high purity linear C.sub.4 + alkyl mercaptans
    Patent number: 5453543
    Abstract: Linear C.sub.4 + alkyl mercaptans of high purity are prepared by the reaction of a di-linear(C.sub.4 +) alkyl sulfide with hydrogen sulfide at elevated temperature in the presence of a specified transition alumina material.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: September 26, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Michael D. Gernon, Stanley R. Sandler
  • Hydroxy-peroxides and their uses
    Patent number: 5451654
    Abstract: Novel hydroxy peroxides of the Structure AHO--R.sub.11 --X--OO--R (A)[wherein R--, --R.sub.11 -- and --X-- are as defined in the Summary of the Invention Section], having 10 hour half-life temperatures of 85.degree.-100.degree. C., the processes for their preparation, and the use of these novel compositions in curing of unsaturated polyester resins and in initiating polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: September 19, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Jose Sanchez, Arthur L. Baron
  • Process for selectively preparing organic trisulfides
    Patent number: 5442123
    Abstract: A process for producing a substantially pure organic trisulfide from mercaptan and sulfur (or high rank organopolysulfide) wherein the sulfur is reacted with mercaptan in the presence of a heterogeneous alumina-based catalyst, ammonium, alkali metal or alkaline earth metal modified silica-based catalyst, zinc-based catalyst or mixtures thereof, and recovering a product containing at least a major proportion of trisulfide.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: August 15, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Emmanuel F. Arretz, Glenn T. Carroll, Roger T. Clark
  • Process for the preparation of N-benzyl-N-organoaminoalkanol
    Patent number: 5436373
    Abstract: N-benzyl-N-organo-substituted aminoalkanol is prepared by reacting benzyl chloride or substituted benzyl chloride with an organo-substituted aminoalkanol in the presence of a molar excess of the starting aminoalkanol and, optionally, water, and in the absence of a) an organic solvent for the reactants and b) alkali metal hydroxide. A portion of the excess aminoalkanol may be substituted with an alternative amine or dissolved alkali metal carbonate.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: July 25, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Stanley R. Sandler, Doris L. Baer
  • Piperidinyl phthalimide hindered amine light stabilizers
    Patent number: 5408008
    Abstract: Hindered amine light stabilizers are provided in which the hindered amine is contained in a unit of formula ##STR1## where X is ##STR2## and R.sup.1, R.sup.2, R.sup.3, and A are as defined as in the Summary of the Invention. Unique polymeric and non-polymeric compounds containing this unit are useful as additives for the stabilization of polymeric compositions which are normally subject to thermal, oxidative or actinic light degradation.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: April 18, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: Terry N. Myers
  • Methylbenzyl formate paint strippers
    Patent number: 5405548
    Abstract: 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.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: April 11, 1995
    Assignee: Elf Atochem North America Inc.
    Inventor: John Distaso
  • Powder coating compositions containing VDF/TFE/HFP terpolymers
    Patent number: 5405912
    Abstract: The use of VDF/TFE/HFP terpolymers in PVDF based powder coating resins to enhance the aesthetics of coatings made therefrom.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: April 11, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: Benjamin Simkin
  • Process for the preparation of an alumina trihyorate catalyst
    Patent number: 5405820
    Abstract: A process for producing a novel catalyst wherein an amorphous alumina gel is formed at least on the surface of an aluminum-containing material, the gel is heated to form crystalline .alpha.- or .beta.-alumina trihydrate and the trihydrate is sulfided, the product of said process, and the method of producing mercaptans from alcohols or ethers and hydrogen sulfide at elevated temperature in the presence of said novel catalyst, are disclosed herein.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: April 11, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Roger T. Clark, James A. Elkins, Jr.
  • Process for the production of 3-aminomethyl-3,5,5-trialkylcyclohexylamine
    Patent number: 5406000
    Abstract: A method is disclosed for the selective preparation of 3-aminomethyl-3,5,5-trialkylcyclohexylamine by preparing dried 3-cyano-3,5,5-trialkylcyclohexylimine from the reaction of 3-cyano-3,5,5-trialkylcyclohexanone with ammonia in the presence of a drying agent in an amount at least sufficient to retain the water present or generated during the imine-forming reaction, and hydrogenating the dried 3-cyano-3,5,5-trialkylcyclohexylimine in the presence of a cobalt-containing catalyst at elevated temperature and pressure.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: April 11, 1995
    Assignee: Elf/Atochem North America, Inc.
    Inventor: Christian Forquy
  • Coating composition for glass
    Patent number: 5401305
    Abstract: A composition for coating glass by chemical-vapor deposition comprises a mixture of a tin oxide precursor monobutyltin trichloride, a silicon dioxide precursor tetraethylorthosilicate, and an accelerant such as triethyl phosphite; the composition is gaseous below 200.degree. C., and permits coating glass having a temperature from 450.degree. to 650.degree. C. at deposition rates higher than 350 .ANG./sec. The layer of material deposited can be combined with other layers to produce an article with specific properties such as controlled emissivity, refractive index, abrasion resistance, or appearance.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: March 28, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: David A. Russo, Ryan R. Dirkx, Glenn P. Florczak
  • Process for curing polymers using amino or hydrazino peroxides
    Patent number: 5399630
    Abstract: This invention relates to novel reactive amino or hydrazino peroxides (hereinafter generally referred to as "AHP's") and derivatives all having a Structure A: ##STR1## in which the definitions of P, R11, R22, X, Q and x, y and z are given in the Summary Of The Invention section, for example, 4,4-di-(t-butylperoxy)pentanohydrazide (I-1), and the use of these novel compounds in curing unsaturated polyester resins, in initiating polymerization of ethylenically unsaturated monomers, for modifying rheology, for crosslinking and curing olefin polymers and elastomers, for producing novel graft and block copolymers, and for producing novel polymers with covalently bound performance additive functions.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: March 21, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: Jose Sanchez
  • Water in oil emulsions
    Patent number: 5387363
    Abstract: Retardation of the rate of evaporation of water in oil emulsions by incorporating in the organic phase thereof an effective amount of paraffin wax.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: February 7, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: John Distaso
  • Hydroxy-peroxides and their uses
    Patent number: 5387654
    Abstract: Novel hydroxy peroxides of the Structure AHO--R.sub.11 --X--OO--R (A)[wherein R--, --R.sub.11 -- and --X-- are as defined in the Summary of the Invention Section], having 10 hour half-life temperatures of 85.degree.-100.degree. C., the processes for their preparation, and the use of these novel compositions in curing of unsaturated polyester resins and in initiating polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: February 7, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Jose Sanchez, Arthur L. Baron
  • Hot lime precipitation of arsenic from wastewater or groundwater
    Patent number: 5378366
    Abstract: A process is disclosed wherein arsenic dissolved in wastewater or groundwater is removed from solution by precipitation thereof as calcium arsenate formed by the reaction of the arsenic with lime or hydrated lime in a heated solution at a pH of about 11 to about 13. It is preferred that the arsenic is first converted by oxidation to its pentavalent form.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: January 3, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: Jeffrey H.-G. Yen
  • Process for preparing block or graft copolymers using amino or hydrazino peroxides
    Patent number: 5360867
    Abstract: This invention relates to novel reactive amino or hydrazino peroxides (hereinafter generally referred to as "AHP's") and derivatives all having a Structure A: ##STR1## in which the definitions of P, R11, R22, X, Q and x, y and z are given in the Summary Of The Invention section, for example, 4,4-di-(t-butylperoxy)pentanohydrazide (I-1), and the use of these novel compounds in curing unsaturated polyester resins, in initiating polymerization of ethylenically unsaturated monomers, for modifying rheology, for crosslinking and curing olefin polymers and elastomers, for producing novel graft and block copolymers, and for producing novel polymers with covalently bound performance additive functions.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: November 1, 1994
    Assignee: ELF Atochem North America, Inc.
    Inventor: Jose Sanchez
  • Hindered amine light stabilizer hydrazides
    Patent number: 5352719
    Abstract: New and novel stabilized polymer compositions and processes for preparing them which employ new and novel carboxylic acid hydrazides bearing a 2,2,6,6-tetra-alkyl-4-piperidine ring and new and novel polymeric compositions stabilized therewith are provided.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: October 4, 1994
    Assignee: Elf Atochem North America, Inc.
    Inventor: Terry N. Myers