Patents Assigned to Perstorp Specialty Chemicals AB
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Publication number: 20140100149Abstract: Disclosed is a lubricant base stock, exhibiting a combination of high flash point, low evaporation loss, high viscosity and unexpectedly exceptionally low pour point and high viscosity index value. Said lubricant base stock comprises at least one ester between 2-propylheptanoic acid and at least one 2,2-substituted 1,3-propanediol and/or at least one dimer, trimer or polymer thereof and/or at least one alkoxylated species of a said 2,2-substituted 1,3-propanediol or a said dimer, trimer or polymer thereof.Type: ApplicationFiled: December 9, 2013Publication date: April 10, 2014Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Robert JANSSON, Irma Auvinen
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Patent number: 8178729Abstract: Disclosed is a process for hydroformylation of ?-olefin wherein said ?-olefin is reached with carbon monoxide or carbon monoxide and hydrogen and/or a reducing agent in presence of a catalyst complex based on a rhodium precursor and a ligand mixture comprising at least 1% by weight of trphenylphosphine and at least 5% by weight of diphenylcyclohexylphosphine, tris-(o-tolyl)phosphine, tris-(p-tolyl)phosphine or (2-methyl-phenyl)diphenylphospine.Type: GrantFiled: March 15, 2006Date of Patent: May 15, 2012Assignee: Perstorp Specialty Chemicals ABInventors: Esko Karvinen, Juha Lehtonen, Joni Kunnas, Merja Harteva
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Patent number: 8158822Abstract: The present invention relates to a process for producing potassium formate. Formaldehyde, potassium hydroxide and isobutyraldehyde are reacted in water, at a molar ratio of 1.0:1.0:1.0 to 3.0:2.0:1.0 and at a temperature of 0-1000 C, preferably 30-700 C. The obtained reaction solution is neutralised to pH 4-6 and evaporated in a first step, whereby two phases are obtained, one organic phase and one aqueous phase, the latter comprising the main part of the potassium formate. The organic phase is subsequently separated from the aqueous phase, where after a final evaporation of the aqueous phase takes place at a pressure of 0.0-1.0 bar and a temperature of 160-2500 C, to obtain a melt of potassium formate. Water is added followed by filtration resulting in a solution having a content of >99% by weight of potassium formate, calculated on a water free basis.Type: GrantFiled: November 30, 2007Date of Patent: April 17, 2012Assignee: Perstorp Specialty Chemicals ABInventors: Goran Axelsson, Christoffer Paulsson, Par Fredholm
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Publication number: 20110247578Abstract: Disclosed is a lubricant base stock, exhibiting a combination of high flash point, low evaporation loss, high viscosity and unexpectedly exceptionally low pour point and high viscosity index value. Said lubricant base stock comprises at least one ester between 2-propylheptanoic acid and at least one 2,2-substituted 1,3-propanediol and/or at least one dimer, trimer or polymer thereof and/or at least one alkoxylated species of a said 2,2-substituted 1,3-propanediol or a said dimer, trimer or polymer thereof.Type: ApplicationFiled: October 16, 2009Publication date: October 13, 2011Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Robert Jansson, Irma Auvinen
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Patent number: 7872057Abstract: A liquid radiation and thermally curing composition characterized in, that said composition comprises at least one ester between at least one tri or polyalcohol and acrylic and/or methacrylic acid, which ester has at least two hydroxyl groups, at least one acrylic or methacrylic double bond, a hydroxyl value of 50-500 mg KOH/g and a double bond concentration of 1-10 mmoles/g, at least one crosslinking agent for hydroxyl functional compounds, which crosslinking agent optionally has at least one olefinic double bond, and an additive package comprising at least one photoinitiator, radical scavenger, light stabilizer, wetting agent and/or leveling agent, and optionally at least one monomeric or oligomeric reactive diluent.Type: GrantFiled: October 2, 2006Date of Patent: January 18, 2011Assignee: Perstorp Specialty Chemicals ABInventors: David James, Kent Sörensen, Henrik Bernquist
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Patent number: 7799874Abstract: A polyurethane obtained by reaction between (i) at least one homopolymer obtained by homopolymerization of ?-caprolactone, and (ii) at least one dissocyanate, wherein said reaction between (i) and (ii) and said homopolymerization are performed in presence of a catalyst selected from (a) a catalyst containing bismuth ethylhexanoate and ethylhexanoic acid, (b) a catalyst containing bismuth ethylhexanoate and bismuth neodecanoate, and (c) a catalyst containing zinc neodecanoate and zinc oxide.Type: GrantFiled: March 26, 2009Date of Patent: September 21, 2010Assignee: Perstorp Specialty Chemicals ABInventors: Graham Carr, Suzanne Howarth
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Publication number: 20100222448Abstract: Disclosed is an aqueous polyurethane dispersion obtained by dispersing in water a reaction product obtained by reacting a reaction mixture comprising at least one organic, aliphatic, cycloaliphatic or aromatic di, tri or poryisocyanate, at least one isocyanate reactive polycarbonate diol, triol or polyol, at least one compound comprising at least one isocyanate reactive group and at least one free radically polymerisable unsaturated group, and at least one compound comprising at least one isocyanate reactive group and at least one at least dispersing active group, and optionally at least one compound comprising at least two isocyanate reactive groups and having a molecular weight of less than 1000 g/mol.Type: ApplicationFiled: March 16, 2006Publication date: September 2, 2010Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Göran Ziegler, David James, Kent Sörensen
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Publication number: 20100087678Abstract: The present invention relates to a process for producing potassium formate. Formaldehyde, potassium hydroxide and isobutyraldehyde are reacted in water, at a molar ratio of 1.0:1.0:1.0 to 3.0:2.0:1.0 and at a temperature of 0-1000 C, preferably 30-700 C. The obtained reaction solution is neutralised to pH 4-6 and evaporated in a first step, whereby two phases are obtained, one organic phase and one aqueous phase, the latter comprising the main part of the potassium formate. The organic phase is subsequently separated from the aqueous phase, where after a final evaporation of the aqueous phase takes place at a pressure of 0.0-1.0 bar and a temperature of 160-2500 C, to obtain a melt of potassium formate. Water is added followed by filtration resulting in a solution having a content of >99% by weight of potassium formate, calculated on a water free basis.Type: ApplicationFiled: November 30, 2007Publication date: April 8, 2010Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Goran Axelsson, Christoffer Paulsson, Par Olsson
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Patent number: 7628934Abstract: Disclosed is a novel deicing composition having improved corrosion inhibition and being obtained by mixing 89-99.98% by weight of an alkali metal formate 0.01-6% by weight of an alkali metal silicate and 0.01-5% by weight of a C4-C19 alkyl carboxylic acid, said weight percentages being calculated on dry substances.Type: GrantFiled: February 6, 2006Date of Patent: December 8, 2009Assignee: Perstorp Specialty Chemicals, ABInventor: Jukka Hietala
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Patent number: 7569736Abstract: The invention relates to a process for producing monopentaerythritol of high purity and monopentaerythritol produced by the process. Formaldehyde is reacted with acetaldehyde in an aqueous solution in the presence of a strongly basic hydroxide in a conventional way. The obtained reaction mixture is evaporated to a dryness of 50-70% by weight and is thereafter cooled. Crystals of pentaerythritol thereby formed are separated off. The crystals are dissolved in water or in a water-containing mother liquor containing pentaerythritol to a dryness of 35-55% by weight. The solution is treated in a purification step whereupon monopentaerythritol of high purity is crystallized at a temperature of 40-90° C. and separated from the remaining mother liquor which is recirculated to the above mentioned step.Type: GrantFiled: February 5, 2007Date of Patent: August 4, 2009Assignee: Perstorp Specialty Chemicals ABInventors: Hans-Ake Bengtsson, Lars-Henrik Nyman
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Publication number: 20090182096Abstract: A polyurethane obtained by reaction between (i) at least one homopolymer obtained by homopolymerisation of ?-caprolactone, and (ii) at least one dissocyanate, wherein said reaction between (i) and (ii) and said homopolymerisation are performed in presence of a catalyst selected from (a) a catalyst containing bismuth ethylhexanoate and ethylhexanoic acid, (b) a catalyst containing bismuth ethylhexanoate and bismuth neodecanoate, and (c) a catalyst containing zinc neodecanoate and zinc oxide.Type: ApplicationFiled: March 26, 2009Publication date: July 16, 2009Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Graham Carr, Suzanne Howarth
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Publication number: 20090062575Abstract: The invention relates to a process for producing monopentaerythritol of high purity and monopentaerythritol produced by the process. Formaldehyde is reacted with acetaldehyde in an aqueous solution in the presence of a strongly basic hydroxide in a conventional way. The obtained reaction mixture is evaporated to a dryness of 50-70% by weight and is thereafter cooled. Crystals of pentaerythritol thereby formed are separated off. The crystals are dissolved in water or in a water-containing mother liquor containing pentaerythritol to a dryness of 35-55% by weight. The solution is treated in a purification step whereupon monopentaerythritol of high purity is crystallized at a temperature of 40-90° C. and separated from the remaining mother liquor which is recirculated to the above mentioned step.Type: ApplicationFiled: February 5, 2007Publication date: March 5, 2009Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Hans-Ake Bengtsson, Lars-Henrik Nyman
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Publication number: 20090039310Abstract: Disclosed is a novel deicing composition having improved corrosion inhibition and being obtained by mixing 89-99.98% by weight of an alkali metal formate 0.01-6% by weight of an alkali metal silicate and 0.01-5% by weight of a C4-C19 alkyl carboxylic acid, said weight percentages being calculated on dry substances.Type: ApplicationFiled: February 6, 2006Publication date: February 12, 2009Applicant: PERSTORP SPECIALTY CHEMICALS ABInventor: Jukka Hietala
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Publication number: 20070082967Abstract: A radiation curable waterborne composition is disclosed. Said composition comprises at least one amphiphilic dendritic polymer, at least one non-amphiphilic radiation curable oligomer or polymer, water and optionally at least one initiator initiating and/or promoting radiation curing. Said at least one amphiphilic dendritic polymer is build up from a polyhydric dendritic core polymer having terminal hydroxyl groups and at least one carboxylic acid and at least one adduct, obtainable by addition of a monoalkylated polyethylene glycol to a dicarboxylic acid or anhydride, each bonded to at least one terminal hydroxyl group in said polyhydric dendritic core polymer.Type: ApplicationFiled: November 4, 2004Publication date: April 12, 2007Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: David James, Bo Haggman
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Patent number: 7186771Abstract: An air drying waterborne resin composition is disclosed. Said resin composition comprises at least one amphiphlic air drying dendritic polymer, at least one non-amphiphilic air drying alkyd resin, at least one drier initiating and/or promoting autoxidation, and water, and optionally at least one anionic and/or nonionic surfactant, and/or at least one coalescent agent. Said at least one amphiphilic air drying dendritic polymer is built up from a polyhydric dendritic core polymer having terminal hydroxyl groups and at least one unsaturated carboxylic acid and at least one adduct, obtainable by addition of a monoalkylated polyethylene glycol to a dicarboxylic acid or anhydride and/or a diisocyanate, each bonded to at least one terminal hydroxyl group in said polyhydric dendritic core polymer.Type: GrantFiled: October 16, 2003Date of Patent: March 6, 2007Assignee: Perstorp Specialty Chemicals ABInventors: Bo Haggman, Hakan Bjornberg, Birger Midelf, David James
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Patent number: 7176264Abstract: A process for manufacture of a dendritic polyether comprising a core, derived from a compound having two or more hydroxyl groups, and at least one branching generation being built up from at least one hydroxyoxetane having one oxetane group and at least one hydroxyl group is disclosed. The process comprises ring opening addition to said core and ring opening polymerization of said hydroxyoxetane. A mixture of the core compound and at least one cationic initiator is prepared and said hydroxyoxetane is fed to said mixture at a rate resulting in and/or maintaining a reaction temperature below onset at thermal degradation and in an amount resulting in at least one branching generation. The initiator is present in an amount of 0.1–0.5% by weight calculated on said core and said oxetane, preferably in an amount giving a ratio hydroxyl groups to initiator of between 1:0.01 and 1:0.05. Yielded dendritic polyether is sebsequently neutralised by addition of at least one alkaline compound and optionally purified.Type: GrantFiled: November 12, 2001Date of Patent: February 13, 2007Assignee: Perstorp Specialty Chemicals ABInventors: Bo Pettersson, David James, Birger Midelf, Hakan Bjornberg, Nicola Rehnberg
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Patent number: 7091308Abstract: A chain extended dendritic polyether comprising a dendritic core polymer and a chain extension bonded to said core polymer, which chain extended dendritic polyether optionally is at least partially chain terminated and/or partially functionalised. The core polymer is a polyhydric dendritic polyether and the chain extension is obtained by addition of at least one alkylene oxide to at least one hydroxyl group in said core polymer.Type: GrantFiled: January 22, 2003Date of Patent: August 15, 2006Assignee: Perstorp Specialty Chemicals ABInventors: Bo Haggman, David James, Hakan Bjornberg, Birger Midelf
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Publication number: 20060052510Abstract: An air drying waterborne resin composition is disclosed. Said resin composition comprises at least one amphiphlic air drying dendritic polymer, at least one non-amphiphilic air drying alkyd resin, at least one drier initiating and/or promoting autoxidation, and water, and optionally at least one anionic and/or nonionic surfactant, and/or at least one coalescent agent. Said at least one amphiphilic air drying dendritic polymer is built up from a polyhydric dendritic core polymer having terminal hydroxyl groups and at least one unsaturated carboxylic acid and at least one adduct, obtainable by addition of a monoalkylated polyethylene glycol to a dicarboxylic acid or anhydride and/or a diisocyanate, each bonded to at least one terminal hydroxyl group in said polyhydric dendritic core polymer.Type: ApplicationFiled: October 16, 2003Publication date: March 9, 2006Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Bo Haggman, Hakan Bjornberg, Birger Midelf, David James
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Publication number: 20050131205Abstract: A chain extended dendritic polyether comprising a dendritic core polymer and a chain extension bonded to said core polymer, which chain extended dendritic polyether optionally is at least partially chain terminated and/or partially functionalised. The core polymer is a polyhydric dendritic polyether and the chain extension is obtained by addition of at least one alkylene oxide to at least one hydroxyl group in said core polymer.Type: ApplicationFiled: January 22, 2003Publication date: June 16, 2005Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Bo Häggman, David James, Hakan Bjornberg, Birger Midelf
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Patent number: 6265623Abstract: The reductive cleavage of linear and cyclic acetals, especially formals, in an aqueous medium containing a formate takes place by hydrogenation with hydrogen in the presence of a heterogeneous hydrogenation catalyst at a pH value of less than 7 at a temperature of over 200° C. The catalyst-poisoning effect of the formate is overcome at over 200° to 300° C., especially from over 200° to 280° C., so that, in a suspension procedure, the weight ratio of metal having hydrogenating activity to acetal is less than 0.1.Type: GrantFiled: August 26, 1999Date of Patent: July 24, 2001Assignee: Perstorp Specialty Chemicals ABInventors: Marcus Morawietz, Thomas Haas, Olaf Burkhardt, Rudolf Vanheertum