Patents Assigned to The Celotex Corporation
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Patent number: 4418158Abstract: Polyoxyalkylene surfactants for cellular forms can be prepared by reacting a polyoxyalkylene adduct and an esterified unsaturated dibasic acid in the presence of a free-radical initiator.Type: GrantFiled: September 29, 1982Date of Patent: November 29, 1983Assignee: The Celotex CorporationInventor: Richard L. Frentzel
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Patent number: 4412014Abstract: Polyoxyalkylene foam stabilizing surfactants can be prepared by reacting a polyoxyalkylene adduct, a cyclic nitrogenous vinyl monomer and an esterified unsaturated dibasic acid under free radical polymerization conditions in the presence of a free radical initiator, and by subjecting the reaction product obtained to a solvent extraction. The isolated components can be utilized as surfactants in producing cellular foams.Type: GrantFiled: June 29, 1981Date of Patent: October 25, 1983Assignee: The Celotex CorporationInventors: Richard L. Frentzel, Ernest K. Moss
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Patent number: 4411949Abstract: Cellular foams, particularly polyisocyanurate foams, are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol mixture prepared by the transesterification with a glycol of a by-product fraction from the manufacture of dimethyl terephthalate, the major portion of said fraction comprising about 15 to 70 weight percent of dimethyl terephthalate, and about 85 to 30 weight percent of a mixture of monomethyl terephthalate, bi-ring esters and polymeric materials. Laminates of such foams exhibit a high degree of fire resistance, low smoke evolution on combustion, low foam friability and high compressive strength.Type: GrantFiled: February 1, 1982Date of Patent: October 25, 1983Assignee: The Celotex CorporationInventors: Scott C. Snider, Alberto DeLeon
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Patent number: 4407771Abstract: A method for producing a synthetic board from cellulosic and/or lignocellulosic materials wherein a polyisocyanate binder is applied to the hot and wet fibrous material in the blow line out of the refiner of the board forming process. Polyphenylpolyisocyanates, such as a mixture of diphenylmethane-4,4'-diisocyanate and polymethylene polyphenyl polyisocyanates, are a particularly suitable binder.Type: GrantFiled: April 26, 1982Date of Patent: October 4, 1983Assignee: The Celotex CorporationInventors: William E. Betzner, Richard K. Holtman, Allen R. Hill
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Patent number: 4402896Abstract: A method and apparatus for producing a synthetic board from cellulosic and/or lignocellulosic materials wherein a thermosettable binder, preferably a polyisocyanate binder, is applied through a cooled nozzle to the hot and wet fibrous material in the blow line out of the refiner of a board forming process. Polyphenylpolyisocyanates, such as a mixture of diphenylmethane-4,4'-diisocyanate and polymethylene polyphenyl polyisocyanates, are a particularly suitable binder.Type: GrantFiled: April 26, 1982Date of Patent: September 6, 1983Assignee: The Celotex CorporationInventors: William E. Betzner, Richard K. Holtman
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Patent number: 4386983Abstract: A structural laminate comprises at least one planar facing sheet with a rigid foam attached to one surface of the facing sheet. The rigid foam may be any polymeric material which is capable of being foamed. Distributed substantially evenly throughout the foam is a mat of long glass fibers arranged in layers substantially parallel to the facing sheet. The process for producing this structural laminate comprises the steps of contacting a thin, substantially incompressible yet expansible mat of long glass fibers with a foam-forming mixture, positioning a facing sheet on each face of the mat, and passing the facing sheets having the mat and the foam-forming mixture therebetween through means for metering the amount of foam-forming mixture and causing it to fully penetrate between the fibers of said glass mat.Type: GrantFiled: November 16, 1981Date of Patent: June 7, 1983Assignee: The Celotex CorporationInventors: Donald E. Hipchen, Michael J. Skowronski, Joseph R. Hagan
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Patent number: 4364199Abstract: The invention relates to a removable tilt-out window construction in which a window may be rotated 90.degree. from its normal vertical position and such rotation causes a slidable block connected to a spring counterbalance to be locked in place to prevent violent release of the spring upon removal of the window. The invention describes a weather strip (30) having a slidable block (68) with a rotatable locking cam (90). Slidable block (68) rides on tracks (64 and 66). Locking Cam (90) can be rotated so that it forces tracks (64 and 66) against the sides of slots (110 and 112) to frictionally engage the slidable block (68) into a fixed position. A window sash (22) is connected to the locking cam (90) to provide rotation thereof to lock slidable block (68). Window 22 may be removed from engagement with locking cam (90) if desired.Type: GrantFiled: July 11, 1980Date of Patent: December 21, 1982Assignee: The Celotex CorporationInventors: William M. Johnson, Kelly L. Calhoon
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Patent number: 4365024Abstract: Polyoxyalkylene surfactants for cellular foams can be prepared by reacting a polyoxyalkylene adduct and an esterified unsaturated dibasic acid in the presence of a free-radical initiator.Type: GrantFiled: July 10, 1981Date of Patent: December 21, 1982Assignee: The Celotex CorporationInventor: Richard L. Frentzel
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Patent number: 4362678Abstract: A process for producing a laminate of polyisocyanurate foam which is the reaction product of a polymethylene polyphenylisocyanate and a polyol which is ethoxylated trimethylol propane, ethoxylated trimethylol ethane, ethoxylated pentaerythritol or ethoxylated glycerin. Laminates of such foams exhibit improved adhesion of the facing sheet.Type: GrantFiled: October 19, 1981Date of Patent: December 7, 1982Assignee: The Celotex CorporationInventors: Michael J. Skowronski, Alberto DeLeon
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Patent number: 4353949Abstract: A method for producing a decorative design on a substrate by applying to the substrate an embossable coating comprising a filler, a binder, a release agent, a moisture control agent, and a liquid; drying the applied coating to remove a major portion of the liquid therefrom, sufficient liquid being retained to make the coating pliable and readily impressible by an embossing means; and subjecting the pliable coating to pressure contact with the embossing means, which is at ambient or an elevated temperature, to impress a decorative design into the coating; and the embossed coated substrate produced by the method.Type: GrantFiled: April 8, 1981Date of Patent: October 12, 1982Assignee: The Celotex CorporationInventors: Stanley C. Kyminas, Bernard J. Einhaus, Stephen G. Hinds
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Patent number: 4346133Abstract: A structural laminate comprises at least one planar facing sheet with a rigid foam attached to one surface of the facing sheet. The rigid foam may be any polymeric material which is capable of being foamed. Distributed substantially evenly throughout the foam is a mat of long glass fibers arranged in layers substantially parallel to the facing sheet. The process for producing this structural laminate comprises the steps of contacting a thin, substantially incompressible yet expansible mat of long glass fibers with a foam-forming mixture, positioning a facing sheet on each face of the mat, and passing the facing sheets having the mat and the foam-forming mixture therebetween through means for metering the amount of foam-forming mixture and causing it to fully penetrate between the fibers of said glass mat.Type: GrantFiled: May 22, 1981Date of Patent: August 24, 1982Assignee: The Celotex CorporationInventors: Donald E. Hipchen, Michael J. Skowronski, Joseph R. Hagan
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Patent number: 4336749Abstract: A fan housing assembly includes a fan and an air permeable, decorative grill mounted on a U-shaped bracket in a housing and two rotatably mounted, semi-circular damper plates in said housing, said plates being movable by air blown by said fan between a normal horizontal position blocking the air discharge opening of said housing and a vertical position not blocking said opening; and a mounting device for said housing, said mounting device being rigidly affixed to a support member and being adapted to extend through an opening in the wall of said housing for engagement with and support of said housing.Type: GrantFiled: April 18, 1979Date of Patent: June 29, 1982Assignee: The Celotex CorporationInventors: David A. Barnhart, John E. Kroger, David A. Walters
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Patent number: 4325849Abstract: A method for making a slurry containing particulate matter and fibers for a preformed insulation product comprises mixing dry particulate matter with a binder which is a liquid containing dispersed fibers. An apparatus suitable for practicing the method comprises a means for disposing the particulate matter in the form of a falling curtain and a means for spraying the binder on the particulate matter.Type: GrantFiled: August 8, 1980Date of Patent: April 20, 1982Assignee: The Celotex CorporationInventors: Murray Rosen, Alan R. Koenig, John D. Copham
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Patent number: 4319921Abstract: Metallic scrap contaminated with combustibles is melted in a reverberatory melting furnace having two communicating wells; one being an enclosed sidewell, which is the receiving well for scrap material during melting, and the other being an enclosed main holding well for molten metal. The main well has burner means to provide heat for melting the metal and treating the scrap material. Heat from molten metal flowing between the main well and the sidewell produces exhaust gases by vaporizing the combustibles of the scrap material. An external passage circulates the exhaust gases from the sidewell to the main well for incineration by the main well's burner means. The external passage has an eductor means which draws the exhaust gases from the sidewell and propels them towards the main well.Type: GrantFiled: October 20, 1980Date of Patent: March 16, 1982Assignee: The Celotex CorporationInventors: Jerry C. Pryor, Roger E. Jenson
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Patent number: 4319792Abstract: A shelf structure includes a shelf body having a pair of spaced gripping and strengthening projections, each projection extending longitudinally from one side edge to the other along the undersurface of said shelf body and being integrally attached to said undersurface. The shelf structure is removably attached to two opposed side supports, as, e.g., the side walls of a bathroom cabinet, by engagement of each of the gripping projections at its sides with opposed lateral projections on each of the side supports.Type: GrantFiled: March 31, 1980Date of Patent: March 16, 1982Assignee: The Celotex CorporationInventors: Ronald L. Britt, Delmar E. Benjamin
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Patent number: 4316935Abstract: A foam characterized by the presence of isocyanurate groups which is the reaction product of a polymethylene polyphenyl isocyanate, such as that of the formula: ##STR1## wherein n is an integer from 1 to 8 inclusive, and a furan resin of the formula: ##STR2## wherein R is --CH.sub.2 -- or --CH.sub.2 --O--CH.sub.2 --, and the average value of m is such that the furan resin has a viscosity of up to 50,000 centipoises at 25.degree. C. The foam exhibits a low friability and an improved capacity to maintain its structural integrity when exposed to fire, and can be used in structural laminates.Type: GrantFiled: November 14, 1980Date of Patent: February 23, 1982Assignee: The Celotex CorporationInventor: Ernest K. Moss
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Patent number: 4311801Abstract: A process for producing a laminate of polyisocyanurate foam which is the reaction product of a polymethylene polyphenylisocyanate and a polyol which is ethoxylated trimethylol propane, ethoxylated trimethylol ethane, ethoxylated pentaerythritol or ethoxylated glycerin. Laminates of such foams exhibit improved adhesion of the facing sheet.Type: GrantFiled: January 18, 1980Date of Patent: January 19, 1982Assignee: The Celotex CorporationInventors: Michael J. Skowronski, Alberto DeLeon
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Patent number: 4306927Abstract: A process for producing a laminate comprising a metal sheet having thermoplastic material on both sides thereof is described. The thermoplastic material is calendered to produce an upper thermoplastic sheet and a lower thermoplastic sheet. A metal sheet is fed into the nip between the calender rolls in order to contact the metal sheet simultaneously with the upper and lower thermoplastic sheets, thus producing a laminate. Processes for producing a pipe-wrapping material, a roofing structure and a solvent-welded joint are also provided.Type: GrantFiled: April 14, 1980Date of Patent: December 22, 1981Assignee: The Celotex CorporationInventors: Smith A. Funk, Charles J. Klasen, Ilmars Vilmanis
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Patent number: 4284683Abstract: A structural laminate comprises at least one planar facing sheet with a rigid foam attached to one surface of the facing sheet. The rigid foam may be any polymeric material which is capable of being foamed. Distributed substantially evenly throughout the foam is a mat of long straight glass fibers arranged in layers substantially parallel to the facing sheet. The process for producing this structural laminate comprises the steps of contacting a thin, substantially incompressible yet expansible mat of long straight glass fibers with a foam-forming mixture on each face of the mat, and passing the facing sheets having the mat and the foam-forming mixture there between through the nip of two rotating rolls.Type: GrantFiled: September 28, 1979Date of Patent: August 18, 1981Assignee: The Celotex CorporationInventors: Donald E. Hipchen, Michael J. Skowronski, Joseph R. Hagan
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Patent number: RE30984Abstract: A structural laminate comprises at least one planar facing sheet with a rigid foam attached to one surface of the facing sheet. The rigid foam is characterized in that the major recurring chemical linkage therein is the isocyanurate moiety. Distributed substantially evenly throughout the foam is a mat of long straight glass fibers arranged in layers substantially parallel to the facing sheet. The process for producing this structural laminate comprises the steps of contacting a thin, substantially incompressible yet expansible mat of long straight glass fibers with a foam-forming mixture of an organic polyisocyanate and a diol, positioning a facing sheet on each face of the mat, and passing the facing sheets having the mat and the foam-forming mixture there between through the nip of two rotating rolls.Type: GrantFiled: October 2, 1980Date of Patent: June 29, 1982Assignee: The Celotex CorporationInventors: Donald E. Hipchen, Michael Skowronski, Joseph R. Hagan