Abstract: A system and related method for cleaning a particulate filter medium. The filter medium is cleaned by the input of energy to burn off particulate matter collected thereon. The system can comprise a thermocouple for monitoring the temperature of the filter medium at a plurality of locations. There is an electronic control unit for determining the point having a maximum individual temperature and creating a control signal commensurate with the maximum temperature. The control unit can determine if the control signal exceeds a predetermined set point level and if so reduces the energy input. The control unit also determines if the control signal falls within a predetermined range, also referred to as a band width of acceptable values less than the set point level. If the signal falls within the band width, the control unit controls the energy input and varies it as appropriate in order to maintain the control signal within the band width.
Type:
Grant
Filed:
December 13, 1994
Date of Patent:
September 3, 1996
Assignee:
Engelhard Corporation
Inventors:
John Chadderton, David Child, John Deighton
Abstract: A composition of matter useful as an oleaginous composition dispersant additive comprising the reaction product of:(1) at least one nitrogen or ester containing adduct selected from the group consisting of (i) oil soluble salts, amides, imides, oxazolines, esters, or mixtures thereof of long chain hydrocarbyl substituted mono and dicarboxylic acids or their anhydrides, (ii) long chain hydrocarbyl having a polyamine attached directly thereto, and (iii) Mannich condensation product formed by condensing long chain hydrocarbyl substituted hydroxy aromatic compound with an aldehyde and polyamine, said adduct containing at least one reactive group selected from reactive amino groups and reactive hydroxyl groups; and(2) at least one polyanhydride.Also disclosed are oleaginous compositions, particularly lubricating oil compositions, containing said reaction product.
Type:
Grant
Filed:
October 14, 1992
Date of Patent:
November 9, 1993
Assignee:
Exxon Chemical Patents Inc.
Inventors:
Jacob Emert, Antonio Gutierrez, Robert D. Lundberg
Abstract: The invention relates to a composition which is usable for the stabilization of thermoplastic resin against the effects of heat and/or light.This composition comprises a hydrotalcite, a zinc zeolite and a zinc carboxylate.It is applied, more especially, to thermoplastic resins containing halogens, and in particular to PVC.
Abstract: The present invention relates to a composition comprising crosslinkable polyethylene homopolymer, copolymer or mixture thereof. The composition includes a peroxide crosslinking agent, a crosslinking co-agent, and a metal compound having a cation selected from Group IIA and IIB of the Periodic Table of Elements. The composition is particularly useful for polymers which are formed using Ziegler-type catalysts and have complete terminal saturation. The present invention also includes a composition which has been found particularly suitable for use in critical molding processes such as rotational molding. This composition comprises a polyethylene homopolymer, copolymer, or mixture thereof. The present invention includes a method of rotational molding.
Type:
Grant
Filed:
June 13, 1983
Date of Patent:
August 15, 1989
Assignee:
Allied-Signal Inc.
Inventors:
Shu P. Chen, Theodore R. Engelmann, Harold D. Oltmann
Abstract: The present invention includes a reactive elastomeric block co-oligomer; a copolymer containing a lactam, a co-catalyst/coupling agent, and the elastomeric block co-oligomer; and processes to make the block co-oligomer, and the copolymer.The reactive elastomeric block co-oligomer is the reaction product of a polycarboxylic acid, and a reactive moiety which can include a reactive polyether or a reactive polysulfide.The block co-oligomer of the present invention has been found to be useful to make a polymer containing lactam monomers, at least one coupling catalyst compound, and the block co-oligomer with the use of a catalyst.The present invention includes a process of forming the block co-oligomer of a polycarboyxlic acid and a reactive moiety. The reactive moiety can include a reactive polyether of a reactive polysulfide.The present invention further comprises a process of forming the block co-oligomer, and the process to form the lactam-block co-oligomer copolymer.
Type:
Grant
Filed:
April 19, 1985
Date of Patent:
June 27, 1989
Assignee:
Allied-Signal Inc.
Inventors:
Murali K. Akkapeddi, David E. Bradley, Thomas D. Gallagher, deceased
Abstract: Ultrahigh molecular weight polyethylene fibers of high tenacity and modulus shrink controlled amounts at temperatures in the range of 100.degree.-145.degree. C. Fabrics and twisted multifilament yarns of these fibers are heat-shrunk or heat-set at these temperatures.
Type:
Grant
Filed:
September 30, 1982
Date of Patent:
April 11, 1989
Assignee:
Allied-Signal Inc.
Inventors:
Sheldon Kavesh, Dusan C. Prevorsek, Gary A. Harpell
Abstract: The present invention is an improved prepreg layer, multilayer composite based on the improved prepreg layer, and article made from the multilayer composite.The prepreg layer of the present invention comprises an array of at least two adjacent, coplanar fibrous elements. Each element comprises a plurality of unidirectional coplanar fibers embedded in a polymeric matrix. The fibers are up to eight inches, preferably one to eight inches, and more preferably two to six inches long.The prepreg layer of the present invention is useful to make a multilayer composite comprising a plurality of the prepreg layers as recited above. The fibers of adjacent layers are at an angle of about 90.degree. from each other. The composite preferably has 2 to 500, more preferably 10 to 150, and most preferably 60 to 120 layers.
Type:
Grant
Filed:
August 3, 1987
Date of Patent:
April 11, 1989
Assignee:
Allied-Signal Inc.
Inventors:
Gary A. Harpell, H. L. Li, Y. D. Kwon, D. C. Prevorsek
Abstract: A salt resistant composition comprising a polyamide selected from the group consisting of: polyepsiloncaprolactam, polyhexamethylene adipamide; copolymers of caprolactam, hexamethylene diamine, and adipic acid; and mixtures thereof. The composition contains from 2 to 30 percent, and preferably 4 to 30 percent based on the weight of the polyamide of a water insoluble plasticizer, and a copolymer of an alpha-olefin and an unsaturated carboxylic acid and derivatives thereof. The plasticizer has been found to enable the polyamide composition to maintain its flexibility upon exposure to a variety of salts. Preferred plasticizers include lauryl lactam and sulfonamides. Preferred are sulfonamide type plasticizers such as n-ethyl; o,p-toluenesulfonamide; o,p-toluene sulfonamide, and toluene sulfonamide formaldehyde resin. The invention includes articles made from the composition.
Type:
Grant
Filed:
September 8, 1987
Date of Patent:
January 31, 1989
Assignee:
Allied-Signal Inc.
Inventors:
Charles D. Mason, Paul G. Galanty, Elmer D. Jones
Abstract: A method of filament winding an article having an inner layer and a filament wound layer on the outer surface of the inner layer. The inner layer is rotationally molded. The method is useful in making hollow enclosed articles. The present invention includes hollow enclosed articles having a polymeric inner layer and a filament wound layer on the outer surface of the inner layer.
Type:
Grant
Filed:
January 12, 1987
Date of Patent:
November 8, 1988
Assignee:
Allied-Signal Inc.
Inventors:
Pat. J. Carbone, Raleigh E. Willson, Frank Petruccelli
Abstract: Bipolar membranes are disclosed which exhibit high permselectivity, good mechanical strength, ability to operate at high current density, low potential drop and long-term stability. Essential to the production of bipolar membranes with these properties is the construction of the interface layer, which includes a matrix material containing quaternary and non-quaternary amine groups and having dispersed therein a cation exchange resin. A number of additional important characteristics are disclosed directed to the construction of the anion and cation layers of the bipolar membranes. A preferred method for forming bipolar membranes by casting layers on top of one another is also disclosed.
Abstract: A composition comprising polyethylene terephthalate which contains up to 10% based on the weight of the polyethylene terephthalate of the reaction product of a low viscosity linear saturated polyester having an intrinsic viscosity of from 0.05 to 0.6 and preferably 0.1 to 0.4 and a compound having at least one functional group selected from the class consisting of anhydrides, epoxides, and hydroxyls.
Abstract: The present invention provides an improved, composite article of manufacture which comprises a network of fibers having a tensile modulus of at least about 500 grams/denier and an energy-to-break of at least about 22 Joules/gram. An elastomeric matrix material having a tensile modulus of less than about 6,000 psi, measured at 25.degree. C.
Type:
Grant
Filed:
December 9, 1985
Date of Patent:
May 31, 1988
Assignee:
Allied Corporation
Inventors:
Gary A. Harpell, Igor Palley, Sheldon Kavesh, Dusan C. Prevorsek
Abstract: A salt resistant composition comprising a polyamide selected from the group consisting of: polyepsiloncaprolactam, polyhexamethylene adipamide; copolymers of caprolactam, hexamethylene diamine, and adipic acid; and mixtures thereof. The composition contains from 2 to 30 percent, and preferrably 4 to 30 percent based on the weight of the polyamide of a water insoluble plasticizer, and a copolymer of an alpha-olefin and an unsaturated carboxylic acid and derivatives thereof. The plasticizer has been found to enable the polyamide composition to maintain its flexibility upon exposure to a variety of salts. Preferred plasticizers include lauryl lactam and sulfonamides. Preferred are sulfonamide type plasticizers such as n-ethyl o,p-toluenesulfonamide; o,p-toluene sulfonamide, and toluene sulfonamide formaldehyde resin. The invention includes articles made from the composition.
Type:
Grant
Filed:
July 12, 1985
Date of Patent:
May 17, 1988
Assignee:
Allied-Signal Inc.
Inventors:
Charles D. Mason, Paul G. Galanty, Elmer D. Jones
Abstract: Permselective membranes are disclosed which comprise a layer comprising polystyrene, at least a portion of which is sulfonated, and between about 10 wt. % and about 35 wt. % monovinyl arene-hydrogentated diene block copolymer, at least a portion of which is sulfonated. The membranes exhibit a resistance of less than about 8 .OMEGA.-cm.sup.2 in 7 wt. % Na.sub.2 SO.sub.4 and an ion exchange capacity of between about 1.0 meq/g and about 1.6 meq/g. Monopolar and bipolar membranes comprising the layer are disclosed. A preferred process for forming the membranes comprises the steps of sulfonating polystryene and monovinyl arene-hydrogenated diene block copolymer, forming a mixture of the materials in a solvent, forming a layer of the mixture and drying the layer to form at least a portion of the membrane.
Abstract: The present invention provides an improved article of manufacture which comprises at least one network of high strength, extended chain fiber or yarn selected from the group consisting of extended chain polyethylene (ECPE) extended chain polypropylene (ECPP) fibers, extended chain polyvinyl alcohol (PVA) fiber and extended chain polyacrylonitrile (PAN) fiber. The fibers and yarn have a denier of not more than about 500 and a tensile modulus of at least about 200 g/denier. The fibers and yarn preferably have a tensile modulus of at least about 500 grams/denier and an energy-to-break of at least about 22 Joules/gram. Optionally, a low modulus elastomeric material, which has a tensile modulus of less than about 6,000 psi, measured at about 23.degree. C., substantially coats the fiber and yarn of the network.
Type:
Grant
Filed:
December 9, 1985
Date of Patent:
April 12, 1988
Assignee:
Allied Corporation
Inventors:
Gary A. Harpell, Igor Palley, Sheldon Kavesh, Dusan C. Prevorsek
Abstract: The present invention provides an improved, complex composite article of manufacture which comprises a network of high strength fibers having a tensile modulus of at least about 160 grams/denier and a tenacity of at least about 7 g/denier. An elastomeric material substantially coats each of the individual fibers, and has a tensile modulus of less than about 6,000 psi, measured at 25.degree. C. The coated fibers are provided with at least one additional rigid layer on a major surface of the coated fibers to produce a rigid complex composite. Composites of this construction have improved resistance to environmental hazards, improved impact resistance, and are unexpectedly effective as ballistic resistant articles such as armor plate or helmets.
Type:
Grant
Filed:
December 9, 1985
Date of Patent:
April 12, 1988
Assignee:
Allied Corporation
Inventors:
Gary A. Harpell, Igor Palley, Sheldon Kavesh, Dusan C. Prevorsek
Abstract: The present invention is a composition comprising a linear saturated polyester and from 0.5 to 30 percent by weight of the polyester of at least one ester of a polyfunctional alcohol having a molecular weight of from 900 to about 1,500. The ester is of an alcohol and a carboxylic acid wherein the alcohol has the formulaR.sup.1 [(OR.sup.2).sub.n OH].sub.mwherein R.sup.1 is a hydrocarbon radical of from 3 to 10 carbon atoms, R.sup.2 is a hydrocarbon radical of from 2 to 4 carbon atoms, n can be the same or a different interger of from 2 to 15, m is an integer of from 3 to 6. The alcohol has greater than 20 carbon atoms. The acid is a carboxylic acid of from 1 to 25 and preferably 3 to 10 carbon atoms, and from 1 to 10 carboxyl groups. Preferably the acid has from 3 to 10 carbon atoms and one carboxyl group.
Type:
Grant
Filed:
August 25, 1986
Date of Patent:
March 15, 1988
Assignee:
Allied Corporation
Inventors:
John C. Haylock, Harold W. Tuller, John A. Bander
Abstract: A rotational moldable polyamide composition, a method of preparing the composition, and a method of rotational molding. The composition contains from about 0.001 percent to about 0.5 percent by weight of a copper compound, preferably cuprous iodide. Preferably, the composition contains from about 0.001 percent to about 0.3 percent by weight of potassium iodide.
Type:
Grant
Filed:
May 20, 1986
Date of Patent:
March 8, 1988
Assignee:
Allied-Signal Inc.
Inventors:
Peter P. Salatiello, Frank Petrucelli, Paul W. Flood