Patents Assigned to Aristech Chemical Corporation
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Patent number: 5534211Abstract: A method of laminating a solid formed body utilizing a laminating resin characterized by low volatile emissions is made from (1) an unsaturated polyester resin comprising maleic acid, phthalic acid, glycol(s), and dicyclopentadiene, (2) a diacrylate or dimethacrylate of alkoxylated bisphenol-A, and (3) a compound selected from the group consisting of ethylene glycol dimethacrylate, vinyl toluene, styrene, and divinyl benzene.Type: GrantFiled: May 6, 1994Date of Patent: July 9, 1996Assignee: Aristech Chemical CorporationInventors: Thomas W. Smeal, George L. Brownell
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Patent number: 5532417Abstract: Neopentyl glycol is made from isobutyraldehyde and formaldehyde. The formaldehyde may be in the form of paraformaldehyde or aqueous formaldehyde. The aldol reaction product is mixed with a lower alcohol prior to hydrogenation to promote hydrogenolysis and allow recovery of high purity product by simple distillation. In a less preferred mode, the alcohol may be added after hydrogenation, resulting in a smaller improvement over previous processes.Type: GrantFiled: August 2, 1993Date of Patent: July 2, 1996Assignee: Aristech Chemical CorporationInventors: Jeffrey S. Salek, Joseph Pugach, Carole L. Elias, Leonard A. Cullo
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Patent number: 5530041Abstract: A monomer-rich acrylic syrup is cast including about 10% to about 20% ground acrylic particles. During curing, the particles absorb over half their weight in monomer, and a cured sheet is formed in which the matrix monomer and uncrosslinked polymer form a phase which extends through the particles, while the particles appear to be fused together. Including a crosslinker in the syrup further insures the interpenetration of the matrix phase into the swollen particles. A textured surface is formed, which is useful as an anti-slip surface in bathtubs and shower stalls, after thermoforming.Type: GrantFiled: January 17, 1995Date of Patent: June 25, 1996Assignee: Aristech Chemical CorporationInventors: Ettore Minghetti, John E. Eitel
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Patent number: 5521243Abstract: Ranges of chain-transfer agents, thixotropic agents, and alumina trihydrate content are balanced to minimize migration or maldistribution of coloring matter and alumina trihydrate during curing of methyl methacrylate in a syrup including polymethylmethacrylate and also during subsequent heating and deformation in thermoforming, to achieve constancy of impact resistance and improve stability of patterns even in deformed portions of formed sheets.Type: GrantFiled: February 23, 1995Date of Patent: May 28, 1996Assignee: Aristech Chemical CorporationInventors: Ettore Minghetti, John E. Eitel, Carol A. Wetter
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Patent number: 5518704Abstract: A synthetic nickel (or cobalt) containing hydrotalcite-like material having a sheet-like morphology and a sheet broadness to thickness ratio of at least 50 and a formula M.sub.1-x Al.sub.x (OH).sub.2 .multidot.xA.multidot.mH.sub.2 O where M is Ni or Co, A is a mono carboxylic anion of the form RCOO.sup.- where R is C.sub.n H.sub.2n+1 and n=0-5, and x and m are numbers satisfying the following conditions:0.2<=x<=0.40.0<=m<=4It is made by starting with a synthesis mixture having Ni or Co (divalent cation) to aluminum (trivalent cation) molar ratio between 1:1 and 10:1, mono carboxylic anion to aluminum (trivalent cation) molar ratio between 0.1:1 to 1.2:1 and optionally added other anions. The process comprises of reacting a mixture comprising nickel (or cobalt) and aluminum cations and mono carboxylic anions in an aqueous slurry at a temperature of at least 40.degree. C. and a pH of at least 7.Type: GrantFiled: March 20, 1995Date of Patent: May 21, 1996Assignee: Aristech Chemical CorporationInventors: Chandrashekhar P. Kelkar, Alain A. Schutz, Leonard A. Cullo
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Patent number: 5507980Abstract: The present invention relates to a process for making novel catalysts, catalyst supports, and adsorbers comprising synthetic hydrotalcite-like binders, having a sheet-like morphology and a sheet broadness to thickness ratio of at least 50 and a formula Mg.sub.1-x Al.sub.x (OH).sub.2.xA.sup.-. mH.sub.2 O where A.sup.- is a mono carboxylic anion of the form RCOO.sup.- where R is C.sub.n H.sub.2n+1 and n=0-5, and x and m are numbers satisfying the following conditions:0.2<=x<=0.40.0<=m<=4This hydrotalcite-like material is combined with an inorganic material to form shapes which have good mechanical strength. The process includes starting with a synthesis mixture having magnesium (divalent cation) to aluminum (trivalent cation) molar ratio between 1:1 and 10:1, mono carboxylic anion to aluminum (trivalent cation) molar ratio between 0.1:1 to 1.2:1 and optionally added other anions.Type: GrantFiled: January 30, 1995Date of Patent: April 16, 1996Assignee: Aristech Chemical CorporationInventors: Chandrashekhar P. Kelkar, Alain A. Schutz, Leonard A. Cullo
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Patent number: 5501830Abstract: A laminating resin is made from (1) an unsaturated polyester resin, (2) a diacrylate or dimethacrylate of alkoxylated bisphenol-A, and (3) vinyl toluene. The resin requires no styrene to achieve excellent laminating resin properties, and is significantly inhibited from emitting volatiles during use.Type: GrantFiled: March 3, 1994Date of Patent: March 26, 1996Assignee: Aristech Chemical CorporationInventors: Thomas W. Smeal, George L. Brownell
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Patent number: 5502240Abstract: A liquid phase esterification process is described wherein the esterification catalyst is a titanium zeolite.Type: GrantFiled: June 9, 1995Date of Patent: March 26, 1996Assignee: Aristech Chemical CorporationInventors: Joseph Pugach, Thomas W. Smeal, Howard S. Karp
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Patent number: 5500171Abstract: A laminating resin is made from (1) an unsaturated polyester resin comprising maleic acid, phthalic acid, and glycol(s), (2) a diacrylate or dimethacrylate of alkoxylated bisphenol-A, and (3) ethylene glycol dimethacrylate. The resin requires no styrene to achieve excellent laminating resin properties, and is significantly inhibited from emitting volatiles during use.Type: GrantFiled: March 3, 1994Date of Patent: March 19, 1996Assignee: Aristech Chemical CorporationInventors: Thomas W. Smeal, George L. Brownell
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Patent number: 5493060Abstract: This invention provides a unique method of producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane ("BPTMC"). The disclosed method manufactures BPTMC from ketals and hemithioketals of 3,3,5-trimethylcyclohexanone ("TMC"). The reaction takes place in the presence of an acid catalyst, and optionally added co-catalysts. Additionally, applicants have disclosed a particularly useful method of manufacturing BPTMC from TMC and alcohol and/or thiol starting materials. These starting materials react to form the TMC ketal or thioketal materials. This method is particularly useful in that it allows recovery and recycling of the alcohol and/or thiol.Type: GrantFiled: September 16, 1994Date of Patent: February 20, 1996Assignee: Aristech Chemical CorporationInventors: Mark R. Rubino, Jeffrey S. Salek
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Patent number: 5492668Abstract: A laminating resin is made from (1) an unsaturated polyester resin, (2) a diacrylate or dimethacrylate of alkoxylated bisphenol-A, and (3) styrene, divinyl benzene or a combination thereof. The resin achieves excellent laminating resin properties, and is significantly inhibited from emitting volatiles during use.Type: GrantFiled: April 8, 1994Date of Patent: February 20, 1996Assignee: Aristech Chemical CorporationInventors: Thomas W. Smeal, George L. Brownell
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Patent number: 5482648Abstract: An isocyanate composition is made by using a 2-component catalyst system--one which initiates at room temperature and one which initiates at a temperature of at least 75.degree. C. and has a one-hour half-life temperature of at least 90.degree. C.; the composition has a room temperature stability of at least thirty days.Type: GrantFiled: May 26, 1995Date of Patent: January 9, 1996Assignee: Aristech Chemical CorporationInventors: Keith A. Borden, David S. Jensen, Robert E. Anderson
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Patent number: 5447921Abstract: A thermosetting unsaturated polyester-polyurethane hybrid foam resin composition is made without significant blistering by using a 2-component catalyst system--one which initiates at room temperature and one which initiates at a temperature of at least 75.degree. C. and has a one-hour half-life temperature of at least 90.degree. C.; the composition has a room temperature stability of at least thirty days.Type: GrantFiled: March 24, 1995Date of Patent: September 5, 1995Assignee: Aristech Chemical CorporationInventors: Keith A. Borden, David S. Jensen, Robert E. Anderson
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Patent number: 5434294Abstract: A process for the titanate catalyzed preparation of plasticizers from polycarboxylic acids and alcohols which minimizes waste water and is energy efficient. The reaction product is treated with aqueous caustic and is then filtered using an absorbent medium which removes titanium, caustic, acid salts and water. The need for water washing is obviated, and the final plasticizer product has excellent properties.Type: GrantFiled: April 4, 1994Date of Patent: July 18, 1995Assignee: Aristech Chemical CorporationInventors: Joseph Pugach, Thomas W. Smeal
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Patent number: 5418048Abstract: A protective film is placed on acrylic sheet. The film has a polyethylene side and an adherent EVA side; it will survive stressful lamination procedures as well as thermoforming, and can be easily removed from a finished article after thermoforming.Type: GrantFiled: January 10, 1994Date of Patent: May 23, 1995Assignee: Aristech Chemical CorporationInventors: Richard A. Daff, James D. Leaseburge
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Patent number: 5415931Abstract: A monomer-rich acrylic syrup is cast including about 10% to about 20% ground acrylic particles. During curing, the particles absorb over half their weight in monomer, and a cured sheet is formed in which the matrix monomer and uncrosslinked polymer form a phase which extends through the particles, while the particles appear to be fused together. Including a crosslinker in the syrup further insures the interpenetration of the matrix phase into the swollen particles. A textured surface is formed, which is useful as an anti-slip surface in bathtubs and shower stalls, after thermoforming.Type: GrantFiled: July 26, 1993Date of Patent: May 16, 1995Assignee: Aristech Chemical CorporationInventors: Ettore Minghetti, John E. Eitel
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Patent number: 5399329Abstract: A synthetic hydrotalcite-like material having a sheet-like morphology and a sheet broadness to thickness ratio of at least 50 and a formula Mg.sub.1-x Al.sub.x (OH).sub.2.xA.mH.sub.2 O where A is a mono carboxylic anion of the form RCOO.sup.- where R is C.sub.n H.sub.2n+1 and n=0-5, and x and m are numbers satisfying the following conditions:0.2<=x<=0.40.0<=m<=4It is made by starting with a synthesis mixture having magnesium (divalent cation) to aluminum (trivalent cation) molar ratio between 1:1 and 10:1, mono carboxylic anion to aluminum (trivalent cation) molar ratio between 0.1:1 to 1.2:1 and optionally added other anions. The process comprises of reacting a mixture comprising magnesium and aluminum cations and mono carboxylic anions in an aqueous slurry at a temperature of at least 40.degree. C. and a pH of at least 7.Type: GrantFiled: July 6, 1993Date of Patent: March 21, 1995Assignee: Aristech Chemical CorporationInventors: Alain A. Schutz, Leonard A. Cullo, Chandrashekhar P. Kelkar
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Patent number: 5393830Abstract: A laminating resin is made from (1) an unsaturated polyester resin comprising maleic acid, phthalic acid, and glycol(s), and dicyclopentadiene, (2) a diacrylate or dimethacrylate of alkoxylated bisphenol-A, and (3) EG dimethacrylate. The resin requires no styrene or other monomer, although up to 20% vinyl toluene or 40% cyclohexyl methacrylate may be used to adjust viscosity.Type: GrantFiled: June 14, 1993Date of Patent: February 28, 1995Assignee: Aristech Chemical CorporationInventors: Thomas W. Smeal, George L. Brownell
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Patent number: 5373061Abstract: New polymers are disclosed to be made in supported Ziegler-Natta systems. They include monomers exhibiting polar functionality such as through a hydroxyl group or other functional group protected during polymerization in the presence of highly active catalysts by the use of a protective alkyl silane group which is removed after polymerization to restore the functionality of the group. The typical polymer thus made is a polyolefin having functional groups on its backbone; the functional groups may be reacted with conventional dyes and/or may perform other functions and enter reactions with other reactive compounds.Type: GrantFiled: January 7, 1994Date of Patent: December 13, 1994Assignee: Aristech Chemical CorporationInventors: Andrew J. Sivak, Leonard A. Cullo
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Patent number: 5369201Abstract: A laminating resin comprising (A) an acrylated or methacrylated cycloaliphatic epoxide, (B) an acrylated or methacrylated alkoxylated bisphenol-A, in a weight ratio of (A) to (B) of about 3 to 1 to about 1 to 5, and (C) about 5% to about 50%, based on the total composition, cyclohexyl methacrylate. Vinyl toluene and ethylene glycol dimethacrylate are also used to modify certain properties of the resin.Type: GrantFiled: March 2, 1994Date of Patent: November 29, 1994Assignee: Aristech Chemical CorporationInventors: Thomas W. Smeal, George L. Brownell