Patents Assigned to Perstorp AB
  • Patent number: 11130874
    Abstract: The present invention refers to a hybrid photopolymer composition for additive manufacturing, —comprising 50-95% by weight of a free radically curable-component, farther comprising at least one (meth)acrylate monomer or oligomer, 5-49% by weight of a cationically curable component, further comprising a cycloaliphatic epoxide, an oxetane mixture, containing a monooxetane compound and a polyoxetane compound, and a thermoplastic polycaprolactone with a molecular weight of 20,000-100,000 g/mol, a free radical photoinitiator, a UV blocker, a cationic photoinitiator, optionally a cationic photosensitiser, and optionally a thermal initiator, wherein the percent by weight is based on the total weight of the photopolymer' composition.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: September 28, 2021
    Assignee: PERSTORP AB
    Inventors: David James, Vanessa Maurin, Pia Wennerberg
  • Patent number: 11089800
    Abstract: The present invention refers to an animal feed additive effective as broad-spectrum preservative, said feed additive comprises as active ingredients propionic acid, glyceryl propionates, hexanoic acid and optionally minor amounts of an alkali metal salt and/or a C7-C12 fatty acid. The present invention also refers to the use of said animal feed additive as a mould and/or yeast inhibitor and to the use of said animal feed additive as an inhibitor of aerobic bacteria. In a further aspect, the present invention refers to the use of said animal feed additive to protect an animal feed from aerobic deterioration.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: August 17, 2021
    Assignee: PERSTORP AB
    Inventors: Hugo Hjelm, Jenny Björck, Lena Rosqvist
  • Patent number: 10882814
    Abstract: Disclosed is a method for production of an ester obtained from a reaction between at least one alcohol having at least one hydroxyl group, such as a diol, and at least one linear of branched C3-C20 monocarboxylic acid, said reaction being performed in presence of at least one azeotropic solvent and optionally at least one antioxidant. Said method comprises the steps of (a) charging said alcohol, said monocarboxylic acid, and said azeotropic solvent and optionally said antioxidant to a reactor, (b) subjecting said alcohol and said carboxylic acid to esterification under reflux, (c) removing azeotropic solvent and unreacted carboxylic acid from yielded reaction mixture, (d) steam stripping off residual unreacted carboxylic acid, (e) neutralising yielded reaction product with an aqueous base, (f) separating water and organic phases, (g) recovering said organic phase and evaporating residual water, and (h) filtering off said antioxidant and possible remaining salts in yielded reaction product.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: January 5, 2021
    Assignee: PERSTORP AB
    Inventors: Magnus Larsen, Susanne Stigsson, Snjezana Trupina Grönlund, Christoffer Månsson
  • Patent number: 10815361
    Abstract: The present invention refers to a method for producing a low-emitting plasticised polyvinylchloride composition, having a fusion time of less than 5.50 s and a volatility of less than 10% weight loss, by mixing pentaerythritol tetravalerate with a polyvinylchloride composition, the fusion time being measured according to DIN 54 802 and ISO/DIS 4574 and the volatility being measured according to ISO 176 Method A. In a further aspect the present invention refers to a thermoplastic article suitable for use in environments where the article is exposed to heat, wherein the thermoplastic article is based on a plasticized polyvinylchloride composition produced by the method of the present invention.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: October 27, 2020
    Assignee: PERSTORP AB
    Inventors: Anders Magnusson, Hakan Bjornberg, Niklas Persson, Maria Peterson, Kent Sorensen
  • Publication number: 20200331838
    Abstract: Disclosed is a method for production of an ester obtained from a reaction between at least one alcohol having at least one hydroxyl group, such as a diol, and at least one linear of branched C3-C20 monocarboxylic acid, said reaction being performed in presence of at least one azeotropic solvent and optionally at least one antioxidant. Said method comprises the steps of (a) charging said alcohol, said monocarboxylic acid, and said azeotropic solvent and optionally said antioxidant to a reactor, (b) subjecting said alcohol and said carboxylic acid to esterification under reflux, (c) removing azeotropic solvent and unreacted carboxylic acid from yielded reaction mixture, (d) steam stripping off residual unreacted carboxylic acid, (e) neutralising yielded reaction product with an aqueous base, (f) separating water and organic phases, (g) recovering said organic phase and evaporating residual water, and (h) filtering off said antioxidant and possible remaining salts in yielded reaction product.
    Type: Application
    Filed: April 24, 2017
    Publication date: October 22, 2020
    Applicant: PERSTORP AB
    Inventors: Magnus LARSEN, Susanne STIGSSON, Snjezana TRUPINA GRÖNLUND, Christoffer MÅNSSON
  • Patent number: 10781348
    Abstract: Disclosed is an aqueous deicing and/or anti-icing composition, and the use thereof on areas in need of deicing and/or anti-icing, exhibiting substantially improved corrosion inhibition, conductivity inhibition and/or hydrogen embrittlement inhibition. Said composition comprises 40-60% by weight of at least one alkali metal carboxylate, 0.1-0.5% by weight of benzoic acid and/or at least one alkali metal benzoate, 0.05-0.5% by weight of at least one alkali metal phosphate, 0.005-0.05% by weight of at least one alkali metal metasilicate, and 0.01-0.15% by weight of succinic acid and/or at least one alkali metal succinate. Balance to 100% by weight is water and said composition is pH adjusted to pH 9-12 by addition of at least one alkali metal hydroxide and/or carbonate. Disclosed is also a method of obtaining corrosion inhibition, conductivity inhibition and/or hydrogen embrittlement inhibition by addition of 0.01-0.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: September 22, 2020
    Assignee: PERSTORP AB
    Inventors: Kent Sörensen, Marie Westerblad
  • Patent number: 10576052
    Abstract: The present invention refers to a glycerol ester composition comprising glyceryl monovalerate, for use in preventing and/or alleviating bacterial inflammation in a monogastric animal (including human) by inhibiting the adhesion of pathogenic bacteria to the intestinal lumen of said animal. The present invention also refers to a therapeutic method for promoting the renewal and growth of epithelial cells in the small intestine of a monogastric animal (including human), the method comprising the step of distributing a glycerol ester composition comprising glyceryl monovalerate to said animal.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: March 3, 2020
    Assignee: PERSTORP AB
    Inventors: Filip Van Immerseel, Karolien Van Driessche, Richard Ducatelle, Conrad Gerard Schwarzer
  • Patent number: 10501573
    Abstract: Disclosed is a radiation curable composition comprising 2-hydroxy-3-butenoic acid and/or at least one ester of 2-hydroxy-3-butenoic acid and at least one additional compound selected from radiation curable monomers, oligomers and polymers.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: December 10, 2019
    Assignee: PERSTORP AB
    Inventors: Stefan Lundmark, Pia Wennerberg
  • Patent number: 10420745
    Abstract: The present invention refers to a glycerol ester composition comprising the reaction product obtained from reacting valeric acid and glycerol at a molar ratio of between 1:0.8 and 1:1.2, for use in reduction and/or inhibition of the growth of gram-positive, pathogenic bacteria. The present invention also refers to said glycerol ester composition for use in prevention and/or alleviation of necrotic enteritis in the gastric tract of galloanserans.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: September 24, 2019
    Assignee: PERSTORP AB
    Inventors: Filip Van Immerseel, Karolien Van Driessche, Richard Ducatelle, Conrad Gerard Schwarzer
  • Patent number: 10167359
    Abstract: Disclosed is a UV-curing coating composition comprising (a) 40-70% by weight of at least one urethane (meth)acrylate being a product of a reaction between at least one polycaprolactone polyol (a1) and at least one adduct (a2), said adduct (a2) being a product of a reaction between at least one polyisocyanate (a3) and at least one hydroxyalkyl (meth)acrylate (a4), said polycaprolactone polyol (a1) being a product of a reaction between at least one polyalkoxylated polyol (a5) and at least one caprolactone monomer (a6), (b) 20-50% by weight of at least one reactive diluent having at least one olefinic carbon-carbon double bond, and (c) 0.5-10% by weight of at least one photoinitiator, and optionally (d) 1-15% by weight of at least one matting agent.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: January 1, 2019
    Assignee: PERSTORP AB
    Inventors: Vanessa Maurin, Paul Kelly
  • Patent number: 10077275
    Abstract: Disclosed is a process for production of a spiroglycol by subjecting pentaerythritol to reaction in water with hydroxypivaldehyde in presence of a catalytically active amount of at least one acid catalyst and seed particles, wherein pentaerythritol, water, at least one acid catalyst and spiroglycol seed particles are charged to a reaction vessel, equipped with heating/cooling and agitation, and under stirring heated to a predetermined reaction temperature followed by progressive addition of hydroxypivaldehyde. The spiroglycol seed particles are present in an amount of 0.5-1.0% by weight, calculated on pentaerythritol, water, acid catalyst and hydroxypivaldehyde, and the hydroxypivaldehyde is charged at a rate determined over time by monitoring growth and/or formation of yielded spiroglycol particles.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: September 18, 2018
    Assignee: PERSTORP AB
    Inventors: Mikael Wernersson, Linh Mong Ngo
  • Publication number: 20180186809
    Abstract: Disclosed is a process for production of a spiroglycol by subjecting pentaerythritol to reaction in water with hydroxypivaldehyde in presence of a catalytically active amount of at least one acid catalyst and seed particles, wherein pentaerythritol, water, at least one acid catalyst and spiroglycol seed particles are charged to a reaction vessel, equipped with heating/cooling and agitation, and under stirring heated to a predetermined reaction temperature followed by progressive addition of hydroxypivaldehyde. The spiroglycol seed particles are present in an amount of 0.5-1.0% by weight, calculated on pentaerythritol, water, acid catalyst and hydroxypivaldehyde, and the hydroxypivaldehyde is charged at a rate determined over time by monitoring growth and/or formation of yielded spiroglycol particles.
    Type: Application
    Filed: June 9, 2016
    Publication date: July 5, 2018
    Applicant: Perstorp AB
    Inventors: Mikael WERNERSSON, Linh Mong NGO
  • Patent number: 9932492
    Abstract: Disclosed is an oxidatively drying alkyd resin composition and a method for preparing said composition. Said composition is obtained by admixing an aqueous silica sol into a substantially 100% alkyd resin being in a liquid state either at ambient temperature or at an elevated temperature. Said silica sol is added in an amount of 0.1-10% by weight calculated as 100% silica on 100% alkyd resin. The use of a said composition is in a further aspect disclosed.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: April 3, 2018
    Assignees: PERSTORP AB, DYRUP A/S
    Inventors: Kent Sorensen, David Lof
  • Publication number: 20180071241
    Abstract: The present invention refers to a glycerol ester composition comprising the reaction product obtained from reacting valeric acid and glycerol at a molar ratio of between 1:0.8 and 1:1.2, for use in reduction and/or inhibition of the growth of gram-positive, pathogenic bacteria. The present invention also refers to said glycerol ester composition for use in prevention and/or alleviation of necrotic enteritis in the gastric tract of galloanserans.
    Type: Application
    Filed: March 17, 2016
    Publication date: March 15, 2018
    Applicant: PERSTORP AB
    Inventors: Filip VAN IMMERSEEL, Karolien VAN DRIESSCHE, Richard DUCATELLE, Conrad Gerard SCHWARZER
  • Patent number: 9877945
    Abstract: The present invention refers to the use of a glycerol ester composition of at least one short chain fatty acid for preventing and/or alleviating necrotic enteritis in the gastric tract of galloanserans. The glycerol ester composition comprises at least 75% by weight of glyceryl tributyrate, below 25% by weight of glyceryl dibutyrate and below 8% by weight of glyceryl monobutyrate. The present invention also refers to the use of the glycerol ester composition for modulating the gut flora of galloanserans.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 30, 2018
    Assignee: PERSTORP AB
    Inventors: Filip Van Immerseel, Richard Sygall, Karolien Van Driessche, Richard Ducatelle, Conrad Gerard Schwarzer
  • Publication number: 20170096543
    Abstract: The present invention refers to a method for producing a low-emitting plasticised polyvinylchloride composition, having a fusion time of less than 5.50 s and a volatility of less than 10% weight loss, by mixing pentaerythritol tetravalerate with a polyvinylchloride composition, the fusion time being measured according to DIN 54 802 and ISO/DIS 4574 and the volatility being measured according to ISO 176 Method A. In a further aspect the present invention refers to a thermoplastic article suitable for use in environments where the article is exposed to heat, wherein the thermoplastic article is based on a plasticized polyvinylchloride composition produced by the method of the present invention.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 6, 2017
    Applicant: PERSTORP AB
    Inventors: Anders Magnusson, Hakan Bjornberg, Niklas Persson, Maria Peterson, Kent Sorensen
  • Publication number: 20170087115
    Abstract: The present invention refers to the use of a glycerol ester composition of at least one short chain fatty acid for preventing and/or alleviating necrotic enteritis in the gastric tract of galloanserans. The glycerol ester composition comprises at least 75% by weight of glyceryl tributyrate, below 25% by weight of glyceryl dibutyrate and below 8% by weight of glyceryl monobutyrate. The present invention also refers to the use of the glycerol ester composition for modulating the gut flora of galloanserans.
    Type: Application
    Filed: September 30, 2016
    Publication date: March 30, 2017
    Applicant: PERSTORP AB
    Inventors: Filip Van IMMERSEEL, Richard SYGALL, Karolien Van DRIESSCHE, Richard DUCATELLE, Conrad Gerard SCHWARZER
  • Publication number: 20160256426
    Abstract: The present invention refers to the use of a glycerol ester composition of at least one short chain fatty acid for preventing and/or alleviating necrotic enteritis in the gastric tract of galloanserans. The glycerol ester composition comprises at least 75% by weight of glyceryl tributyrate, below 25% by weight of glyceryl dibutyrate and below 8% by weight of glyceryl monobutyrate. The present invention also refers to the use of said composition for modulating the gut flora of galloanserans.
    Type: Application
    Filed: October 6, 2014
    Publication date: September 8, 2016
    Applicant: Perstorp AB
    Inventors: Filip Van IMMERSEEL, Richard SYGALL, Karolien Van DRIESSCHE, Richard DUCATELLE, Conrad Gerard SCHWARZER
  • Patent number: 9388194
    Abstract: Disclosed is a process for obtaining an acrylic compound having a tertaoxaspiro backbone and at least one acrylic unsaturation. Said compound is in embodiments an acrylate, a methacrylate or a crotonate of an alkoxylated, such as an ethoxylated, a propoxylated and/or a butoxylated 2,4,8,10-tetraoxaspiro[5.5]undecane3,9-dialkanol.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: July 12, 2016
    Assignee: PERSTORP AB
    Inventors: David James, Linda Zellner
  • Patent number: 9174786
    Abstract: A valve assembly (2) intended for use together with a pallet container (1) and a liner. The valve assembly (2) comprises a valve (3), a valve seal (4) and an outer lip seal (5). The valve assembly (2) further comprises a support member (6) which is constitutes of a lower guide member (61) and an upper guide member (62).
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: November 3, 2015
    Assignee: PERSTORP AB
    Inventor: Anders Knutsson