Patents by Inventor Alberto DeLeon
Alberto DeLeon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20070208096Abstract: Aromatic polyester polyols comprising the inter-esterification product of at least one phthalic acid based material, at least one hydroxylated material having a functionality of at least 2, and at least one low molecular weight sulfonated compound, are provided. These polyols may optionally include at least one hydrophobic material as an inter-esterification reactant. Also provided are methods for preparing such polyols. Further described are polyol-based compositions prepared using such polyols and a blowing agent, as well as methods for preparing such polyol-based compositions. Polyisocyanurate and polyurethane foams made from such polyol-based compositions, and to methods for preparing such polyisocyanurate and polyurethane foams are also described.Type: ApplicationFiled: March 2, 2006Publication date: September 6, 2007Inventors: Alberto DeLeon, David Shieh
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Patent number: 6133329Abstract: Methods of making aromatic polyester polyols that are suitable for use with hydrocarbon and hydrofluorocarbon blowing agents. The polyols are made by reacting polyethylene terephthalate, dissolved in a solution comprising a plurality of glycols, with a natural oil. The natural oil reacts into the polyol backbone at a specific temperature. Aromatic polyester polyols that are suitable for use with hydrocarbon and hydrofluorocarbon blowing agents. The polyols are made from polyethylene terephthalate and a natural oil. The polyols exhibit low hydroxyl numbers and low viscosities, and hydrocarbons and hydrofluorocarbons blowing agents are soluble in these polyols. A method for making foam using the polyols of the present invention. The method includes reacting a polyol of the present invention, mixed with other polyol components, with an isocyanate component.Type: GrantFiled: March 31, 1999Date of Patent: October 17, 2000Assignee: Oxid L.P.Inventors: David J. Shieh, Alberto DeLeon
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Patent number: 5360900Abstract: Two methods for preparing polyester-polyether polyols from polyalkylene terephthalates are disclosed. The first method comprises reacting the polyalkylene terephthalate with a solution of low molecular weight polyols and ethoxylated methyl glucoside at a suitable temperature, generally between about 370.degree. and 450.degree. F., and under vacuum distillation.The second method comprises dissolving the polyalkylene terephthalates in a mixture of low molecular weight polyols at a suitable temperature and under vacuum distillation to form the polyester polyol component. The polyether polyol component is made by reacting ethoxylated methyl glucoside with an alkylene oxide in the presence of a suitable catalyst. The final product is made by blending about 80-95% by weight of the polyester component with about 5-20% by weight of the polyether component.Type: GrantFiled: August 12, 1993Date of Patent: November 1, 1994Assignee: Oxid, Inc.Inventors: Alberto DeLeon, David J. Shieh
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Patent number: 4711912Abstract: 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 digesting polyalkylene terephthalate, particularly polyethylene terephthalate, with a polyol, especially a glycol. 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: April 29, 1982Date of Patent: December 8, 1987Assignee: The Celotex CorporationInventors: Scott C. Snider, Alberto DeLeon
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Patent number: 4572865Abstract: A method for continuously producing an insulation board comprising a rigid plastic foam core having two major surfaces and a facing material on one or both of the major surfaces, the method including conveying a facing material along a production line, depositing a partially expanded froth foam of a plastic mixture, which contains at least one frothing agent, on the facing material, and further expanding and curing the froth foam in contact wiht the facing material to form the insulation board. The board is particularly useful as roof insulation.Type: GrantFiled: December 5, 1983Date of Patent: February 25, 1986Assignee: The Celotex CorporationInventors: David G. Gluck, Alberto DeLeon, John P. Oliver
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Patent number: 4555418Abstract: Polyisocyanurate foams are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol blend comprising(a) about 5 percent to about 95 percent by weight of said blend of an alkylene oxide adduct of an aromatic amine of the formula ##STR1## wherein Z is a divalent aromatic radical, x, x', y, and y' each independently have an average value from about 1 to about 5, and each R is independently selected from the group consisting of hydrogen, alkyl or aryl, provided that the adduct is capped with ethylene oxide units, and(b) about 5 percent to about 95 percent by weight of said blend of an aromatic polyester polyol having a molecular weight of from about 150 to about 5,000. Laminates of such foams exhibit a high degree of fire resistance, low foam friability, high compressive strength, and excellent facer adhesion.Type: GrantFiled: December 17, 1984Date of Patent: November 26, 1985Assignee: The Celotex CorporationInventors: Scott C. Snider, Alberto DeLeon
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Patent number: 4496625Abstract: Polyisocyanurate foams are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol blend comprising(a) about 5 percent to about 95 percent by weight of said blend of an alkylene oxide adduct of an aromatic amine of the formula ##STR1## wherein Z is a divalent aromatic radical, x, x', y, and y' each independently have an average value from about 1 to about 5, and each R is independently selected from the group consisting of hydrogen, alkyl or aryl, provided that the adduct is capped with ethylene oxide units, and(b) about 5 percent to about 95 percent by weight of said blend of an aromatic polyester polyol material having a molecular weight of from about 150 to about 5,000. Laminates of such foams exhibit a high degree of fire resistance, low foam friability, high compressive strength, and excellent facer adhesion.Type: GrantFiled: October 12, 1983Date of Patent: January 29, 1985Assignee: The Celotex CorporationInventors: Scott C. Snider, Alberto DeLeon
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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: 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: 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: 4212917Abstract: 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: June 1, 1978Date of Patent: July 15, 1980Assignee: The Celotex CorporationInventors: Michael J. Skowronski, Alberto DeLeon
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Patent number: 4169921Abstract: An improved polyisocyanurate comprising polymethylene polyphenylisocyanate having a functionality of 2.1 to 3.2 and having an equivalent weight between 120 and 180; a polyol having an equivalent weight between 30 and 100; certain tertiary amino phenols; an alkali metal carboxylate, and a blowing agent.These compositions exhibit an advantageous cream time, firm time, tack free time, and a low friability.Type: GrantFiled: October 13, 1976Date of Patent: October 2, 1979Assignee: The Celotex CorporationInventors: Ernest K. Moss, Alberto DeLeon, Michael J. Skowronski
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Patent number: 3940517Abstract: Polyisocyanurate foams are produced by admixing from separate sources, an organic polyisocyanate, a diol, and a catalytic composition which comprises an alkali metal carboxylate and polyoxyethylene polyol.Type: GrantFiled: April 16, 1974Date of Patent: February 24, 1976Assignee: The Celotex CorporationInventor: Alberto DeLeon
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Patent number: RE36674Abstract: A method for continuously producing an insulation board comprising a rigid plastic foam core having two major surfaces and a facing material on one or both of the major surfaces, the method including conveying a facing material along a production line, depositing a partially expanded froth foam of a plastic mixture, which contains at least one frothing agent, on the facing material, and further expanding and curing the froth foam in contact wiht the facing material to form the insulation board. The board is particularly useful as roof insulation.Type: GrantFiled: May 18, 1989Date of Patent: April 25, 2000Assignee: The Celotex CorporationInventors: David G. Gluck, Alberto DeLeon, John P. Oliver