Patents by Inventor Hakan Bjornberg
Hakan Bjornberg 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: 20230111129Abstract: An antimicrobial composition for use as a preservative for waterborne coating compositions where said antimicrobial composition comprise at least two organic compounds in combination selected from a combination of compound group i) and compound group ii). Compound group i) is selected from the group consisting of dodecanoic acid, metal dodecaonoate, ammonium dodecanoate and a combination thereof, while compound group ii) is selected from the group consisting of propionic acid, metal formate, metal propionate, ammonium propionate and a combination thereof. The waterborne coating composition is based on an emulsion polymer resin based on a radical polymerization polymer selected from the group consisting of; vinyl acetate (PVA) polymer, vinyl acetate/ethylene (VAE) copolymer, vinyl acrylic copolymer, acrylic polymer, styrene acrylic copolymer, vinyl acetate/ethylene/vinyl chloride copolymer, vinyl acetate versatate and combinations thereof. The antimicrobial composition constitutes 0.3-3.Type: ApplicationFiled: February 18, 2021Publication date: April 13, 2023Inventors: David LÖF, Stefan LUNDMARK, Håkan BJÖRNBERG
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Publication number: 20230044924Abstract: The present invention refers to a polyvinyl chloride composition with high stability, said composition comprising: a) 100 phr (parts per hundred resin) of a polyvinyl chloride resin, b) 10-150 phr of pentaerythritol tetravalerate as plasticizer, said pentaerythritol tetravalerate having an acid value of less than 0.05 mg KOH/g and being obtained through esterification of valeric acid and high purity pentaerythritol having a purity of at least 98%, an ash content of less than 200 ppm and a dipentaerythritol content of 0.1-2 wt%, c) 0.3-14 phr of at least one stabilizer, and optionally d) at least one additive, wherein and the amount of free acid in the polyvinyl chloride composition is less than 30 ppm, preferably less than 20 ppm. The invention further refers to a polyvinyl chloride article comprising said composition and having an amount of free acid less than 30 ppm, preferably less than 20 ppm.Type: ApplicationFiled: March 4, 2021Publication date: February 9, 2023Inventors: Håkan BJÖRNBERG, Anders MAGNUSSON, Eva GUSTAVSSON, Peter JOHANSSON
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Publication number: 20220002468Abstract: A polyurethane or polyurethane-urea composition with reduced cold hardening being the reaction product of: a) at least one block copolymer of A-B-A type with an average number molecular weight of 1000 to 5000 g/mol, and being the reaction product of a poly(alkylene oxide) diol and a cyclic lactone or ether, the poly(alkylene oxide) diol being present in the range 30-70 wt % of the block copolymer and the cyclic lactone or ether is present in the range 30-70 wt, and b) at least one diisocyanate, and associated uses of the same.Type: ApplicationFiled: November 14, 2019Publication date: January 6, 2022Inventors: Scott PHILLIPS, Joel NEALE, Joseph SCHOLES, Hakan BJORNBERG
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Patent number: 10815361Abstract: 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: GrantFiled: September 30, 2016Date of Patent: October 27, 2020Assignee: PERSTORP ABInventors: Anders Magnusson, Hakan Bjornberg, Niklas Persson, Maria Peterson, Kent Sorensen
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Publication number: 20170096543Abstract: 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: ApplicationFiled: September 30, 2016Publication date: April 6, 2017Applicant: PERSTORP ABInventors: Anders Magnusson, Hakan Bjornberg, Niklas Persson, Maria Peterson, Kent Sorensen
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Publication number: 20150203657Abstract: The present invention refers to a plasticiser, said plasticiser being an ester formed by reaction of a pentaerythritol and a monocarboxylic acid, having 4-5 carbon atoms. In a further aspect the present invention refers to the use of said plasticiser in blends and in a PVC resin. The plasticiser of the present invention is a non-phthalic plasticiser that has proven to have shorter fusion time and higher plasticising efficiency compared to commercial non-phthalic PVC plasticisers.Type: ApplicationFiled: July 26, 2011Publication date: July 23, 2015Applicant: Perstorp ABInventors: Karin Ohgren Gredegard, Anders Magnuesson, Hakan Bjornberg, Niklas Persson, Maria Peterson, Kent Sorensen
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Patent number: 8692033Abstract: The present invention refers to a process for hydrogenation of caprolactone and/or its oligomers or polymers to 1,6-hexanediol. The process is performed in liquid phase at a pressure between 100 and 350 bar and is performed in the presence of a catalytically effective amount of at least one catalyst comprising Cu, Mn, Al, Cr, Zn, Ba and/or Zr.Type: GrantFiled: July 11, 2011Date of Patent: April 8, 2014Assignee: Perstorp ABInventors: Christoffer Paulsson, Katri Nikkila, Hakan Bjornberg
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Publication number: 20130225875Abstract: The present invention refers to a process for hydrogenation of caprolactone and/or its oligomers or polymers to 1,6-hexanediol. The process is performed in liquid phase at a pressure between 100 and 350 bar and is performed in the presence of a catalytically effective amount of at least one catalyst comprising Cu, Mn, Al, Cr, Zn, Ba and/or Zr.Type: ApplicationFiled: July 11, 2011Publication date: August 29, 2013Applicant: PERSTORP ABInventors: Christoffer Paulsson, Katri Nikkila, Hakan Bjornberg
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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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Dendritic macromolecule with improved polyether polyol solubility and process for production thereof
Publication number: 20050240000Abstract: A dendritic macromolecule having the following characteristics (i) an active hydrogen content of a least 3.8 mmoles/g and (ii) an active hydrogen functionality of at least 16 and which macromolecule is mixable at a ratio of at least 15% by weight with a polyether polyol having a hydroxyl value of at most 40 mg KOH/g to form a stable liquid at 23 ° C. The subject dendritic macromolecule confer significant load building properties to isocyanate based foams and elastomers such as polyurethane foams and elastomers and may be used for this purpose to partially or fully displace current relatively expensive chemical systems which are used to confer load building characteristics to such foams and elastomers.Type: ApplicationFiled: June 22, 2005Publication date: October 27, 2005Applicant: PERSTORP ABInventors: Bo Haggman, Hakan Bjornberg -
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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Publication number: 20040059086Abstract: 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 polymerisation 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: ApplicationFiled: July 7, 2003Publication date: March 25, 2004Inventors: Bo Pettersson, David James, Birger Midelf, Hakan Bjornberg, Nicola Rehnberg
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Dendritic macromolecule with improved polyether polyol solubility and process for production thereof
Publication number: 20030176591Abstract: A dendritic macromolecule having the following characteristics (i) an active hydrogen content of a least 3.8 mmoles/g and (ii) an active hydrogen functionality of at least 16 and which macromolecule is mixable at a ratio of at least 15% by weight with a polyether polyol having a hydroxyl value of at most 40 mg KOH/g to form a stable liquid at 23° C. The subject dendritic macromolecule confer significant load building properties to isocyanate based foams and elastomers such as polyurethane foams and elastomers and may be used for this purpose to partially or fully displace current relatively expensive chemical systems which are used to confer load building characteristics to such foams and elastomers.Type: ApplicationFiled: March 13, 2003Publication date: September 18, 2003Inventors: Bo Haggman, Hakan Bjornberg