Abstract: Molecular weight modification of polypropylene by 4-(t-amylperoxy)-4-methyl-2-pentanol and polypropylene so modified suitable for handling and packaging food, beverages and pharmaceuticals and for use in medical devices is disclosed.
Type:
Grant
Filed:
November 12, 2002
Date of Patent:
July 29, 2003
Assignee:
ATOFINA Chemicals, Inc.
Inventors:
Leo Kasehagen, Robert Kazmierczak, Robert Cordova, Terry Myers
Abstract: The present invention relates to a water-repellant composition consisting essentially of at least one hydrophobic agent and at least one solvent which is compatible with the at least one hydrophobic active agent, this solvent being other than a fluorinated hydrocarbon, wherein the solvent is organic compound comprising at least one oxygen-comprising functional group and in that the hydrophobic active agent is a compound of an organopolysiloxane of formula (I):
where P is an integer ranging from 0 to 150 and each R independently represents an alkyl or alkoxy group with 1 to 10 carbon atoms, a cycloalkyl group with 3 to 10 carbon atoms, a phenyl group, an aminated group, a halogen or a hydrogen, with the condition that at least one R is an aminated group.
Abstract: A solar-control glass that has acceptable visible light transmission, absorbs near infrared wavelength light (NIR) and reflects midrange infrared light (low emissivity mid IR) along with a preselected color within the visible light spectrum for reflected light is provided. Also provided is a method of producing the improved, coated, solar-controlled glass. The improved glass has a solar energy (NIR) absorbing layer comprising tin oxide having a dopant such as antimony and a low emissivity control layer (low emissivity) capable of reflecting midrange infrared light and comprising tin oxide having fluorine and/or phosphorus dopant. A separate iridescence color suppressing layer as described in the prior art is generally not needed to achieve a neutral (colorless) appearance for the coated glass, however an iridescence suppressing layer or other layers may be combined with the two layer assemblage provided by the present invention.
Type:
Grant
Filed:
October 30, 2000
Date of Patent:
July 22, 2003
Assignee:
Atofina Chemicals, Inc.
Inventors:
David A. Russo, Clem S. McKown, Christophe Roger, Jeffrey L. Stricker
Abstract: The invention relates to a composition based on polypropylene homopolymer or copolymer and on an impact modifier comprising an ethylene/alkyl acrylate copolymer. This composition comprises substantially between 1 and 40% by weight of impact modifier and it may comprise an ethylene-based copolymer taken from the group comprising ethylene/acrylate copolymers, vinyl acetate copolymers, polyethylene obtained by metallocene catalysis or mPE and linear low-density polyethylene or LLDPE.
Abstract: The process for the continuous preparation of homopolymers or copolymers by free-impinging-jet micromixing of fluids formed (1) of monomer(s) and (2) of an initiator system consists in micromixing the said fluids (1) and (2) and in recovering the mixture of these fluids in the form of a resultant jet Jr, originating from the point of impingement (I).
Abstract: The invention relates to a process for the preparation of 1,1,1-trifluoro-2,2-dichloroethane (F123).
This process consists in bringing 1,1,1-trifluoro-2-chloroethane (F133a) into contact with chlorine in the presence of hydrogen fluoride and of a fluorination catalyst.
The F133a can be obtained by chlorination of trichloroethylene and the F123 can subsequently be fluorinated to F125.
Type:
Grant
Filed:
February 28, 2001
Date of Patent:
July 8, 2003
Assignee:
Atofina
Inventors:
Eric Jorda, Eric Lacroix, Sylvain Perdrieux
Abstract: New and novel copolymers of vinylidene fluoride and hexafluoropropylene having lower or no crystallinity together with processes for their manufacture and use are disclosed.
Abstract: A conduit for transporting non-volatile liquids is provided in which the conduit's internal surfaces have a surface energy lower than that of the nonvolatile liquid.
Type:
Grant
Filed:
September 25, 2002
Date of Patent:
July 1, 2003
Assignee:
ATOFINA Chemicals, Inc.
Inventors:
Sivakumar Gopalnarayanan, Scott R. Gaboury
Abstract: This process for the transportation of a batch of naphtha in a pipeline, the prime purpose of which is to transport crude oil, is characterized in that the batch of naphtha, bracketed by batches of condensates, namely a head batch of condensate and a tail batch of condensate, is conveyed in the pipeline and, on arrival, the batch of naphtha is recovered between a point in time at the earliest at the end or substantially at the end of the passage of the head condensate/naphtha interface region and a point in time at the latest at the beginning or substantially at the beginning of the appearance of the naphtha/tail condensate interface region.
Abstract: For the anionic polymerization of lactams: (a) (i) a catalyst capable of creating a lactamate and (ii) a regulator chosen from amides of formula R1-NH—CO-R2, in which R1 can be substituted by an R3-CO—NH— or R3-0— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical, are dissolved in the molten lactam, (a1) the solution from stage (a) is cooled, optionally to the solid state in a form which can be divided, (a2) the product from stage (a1) is optionally reheated to a temperature below the polymerization temperature of the lactam, (a3) optionally, the product from stage (a1) is reheated and is maintained at a temperature between the melting temperature of the lactam and 15° C. above, and (b) the produce from any one of stages (a1), (a2) or (a3) is introduced into a mixing device or mold and is then heated to a temperature sufficient to obtain the bulk polymerization of the lactam.
Type:
Grant
Filed:
September 24, 2001
Date of Patent:
June 17, 2003
Assignee:
Atofina
Inventors:
Nicola Hoogen, Andreas Wollny, Heike Faulhammer, Rolf Muelhaupt
Abstract: The present invention relates to a conductive composition comprising (i) a fluoropolymer, (ii) an electrically conductive product and (iii) a triblock copolymer ABC, the three blocks A, B and C being linked together in this order, each block being either a homopolymer or a copolymer obtained from two or more monomers, block A being linked to block B and block B to block C by means of a covalent bond or an intermediate molecule linked to one of these blocks via a covalent bond and to the other block via another covalent bond, and such that:
Type:
Application
Filed:
December 3, 2001
Publication date:
June 5, 2003
Applicant:
ATOFINA
Inventors:
Anthony Bonnet, Francois Court, Ludwik Leibler
Abstract: The invention concerns alkoxyamines derived from &bgr;-phosphorous nitroxides corresponding to formula (I). Said compounds can be used as (co)polymerization initiators of at least a monomer polymerizable by radical polymerization.
Type:
Grant
Filed:
March 19, 2002
Date of Patent:
May 27, 2003
Assignee:
Atofina
Inventors:
Jean-Luc Couturier, Christiane Henriet-Bernard, Christophe Le Mercier, Paul Tordo, Jean-Francois Lutz
Abstract: It is possible to make very concentrated solutions of N-coco-, N-oleyl- or N-tallow-propylenediamine acetate which can be diluted without formation of gels or of lumps in a water/dissolving agent solvent. A simple dilution test is given which allows the suitable compositions to be selected. Use of their diluted solutions, in particular for the lubrication of bottles on conveyor lines.
Abstract: The present invention relates to a composition comprising isotactic polypropylene homo- or copolymer obtained by metallocene catalysis (A), abbreviated to miPP, and isotactic polypropylene homo- or copolymer obtained by Ziegler-Natta catalysis (B), abbreviated to zniPP, and grafted. It also relates to a coextrusion tie comprising such a composition.
Abstract: The invention concerns a method for preparing methyl ethyl ketone azine which consists in: (a) reacting ammonia, hydrogen peroxide and methyl ethyl ketone in the presence of a working solution to form an azine; (b) separating the working solution and the azine possibly containing methyl ethyl ketone which has not reacted and butanol-2; (c) recycling the working solution to step (a) after optional treatment; (d) separating the methyl ethyl ketone and the butanol-2 from the azine. The butanol-2 of the flow in step (d) is either purged or dehydrogenated in MEK and recycled at step (a).
Type:
Grant
Filed:
January 25, 2001
Date of Patent:
May 13, 2003
Assignee:
Atofina
Inventors:
Jean-Pierre Schirmann, Paul Bourdauducq
Abstract: The invention relates to a process for trapping a free monomer which has not reacted by copolymerization or by grafting comprising at least one epoxide functional group in a thermoplastic composition based on ethylene and/or on propylene and based on at least one monomer comprising at least one epoxide functional group, the said process comprising the following stages:
Abstract: A process for the delignification and bleaching of chemical paper pulps comprising one or more stage(s) of treatment with hydrogen peroxide, at a temperature greater than 100° C. and under high pressure, in the presence of a polymer and of a compound A chosen from potassium hydroxide, sodium hydroxide and alkali metal or alkaline-earth metal carbonates.
Abstract: Sulfur free, crosslinking, scorch-retarding compositions for compounding and cure of polymers susceptible to cure by free radical initiators are disclosed.
Type:
Grant
Filed:
December 17, 2001
Date of Patent:
April 29, 2003
Assignee:
Atofina Chemicals, Inc.
Inventors:
Leonard Henry Palys, Michael Fred Novits, Leo Kasehagen, Fabien Debaud, Luciano Abrigo