Patents Assigned to Perstorp AB
  • 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
  • Patent number: 9139345
    Abstract: A valve assembly (2) intended for use together with a pallet container (1) and a liner. The valve assembly (2) comprises a support member (6). The support member (6) is provided with a guiding hole (63) intended to interact with a lower valve guide member (11).
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: September 22, 2015
    Assignee: PERSTORP AB
    Inventor: Anders Knutsson
  • Publication number: 20150203657
    Abstract: 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: Application
    Filed: July 26, 2011
    Publication date: July 23, 2015
    Applicant: Perstorp AB
    Inventors: Karin Ohgren Gredegard, Anders Magnuesson, Hakan Bjornberg, Niklas Persson, Maria Peterson, Kent Sorensen
  • Patent number: 8692033
    Abstract: 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: Grant
    Filed: July 11, 2011
    Date of Patent: April 8, 2014
    Assignee: Perstorp AB
    Inventors: Christoffer Paulsson, Katri Nikkila, Hakan Bjornberg
  • Publication number: 20130225875
    Abstract: 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: Application
    Filed: July 11, 2011
    Publication date: August 29, 2013
    Applicant: PERSTORP AB
    Inventors: Christoffer Paulsson, Katri Nikkila, Hakan Bjornberg
  • Publication number: 20100216966
    Abstract: The invention relates to a method for the synthesis of a polyisocyanate composition comprising acylureas. According to the invention, an initial composition containing derivatives comprising at least two isocyanate functions is subjected to the action of at least two acids, whereby at least one of said acids is a strong acid (pKa=3) and at least one is a medium strength acid (3=pKa=6), at a temperature that is equal to or greater than 50° C.; the invention is suitable for coatings.
    Type: Application
    Filed: March 1, 2010
    Publication date: August 26, 2010
    Applicant: PERSTORP AB
    Inventors: Jean-Marie Bernard, Denis Revelant, Cédric Amouyal
  • Publication number: 20050240000
    Abstract: 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: Application
    Filed: June 22, 2005
    Publication date: October 27, 2005
    Applicant: PERSTORP AB
    Inventors: Bo Haggman, Hakan Bjornberg
  • Publication number: 20050227946
    Abstract: The present invention relates to a method of treating inflammatory, tissue repair and infectious conditions in a mammal suffering therefrom which comprises administering to a mammal in need thereof an effective amount of a cyclic compound selected from the group consisting of cyclopentane, cyclohexane, cycloheptane, monosaccharide.
    Type: Application
    Filed: August 7, 2003
    Publication date: October 13, 2005
    Applicant: PERSTORP AB
    Inventor: Matti Siren
  • Patent number: 6617418
    Abstract: A hyperbranched dendritic polyether, which optionally is further processed, such as further chain extended, chain terminated and/or functionalised. The hyperbranched dendritic polyether is obtained in a process comprising the step of thermally initiated cationic ring-opening polymerisation of at least one oxetane having at least two reactive groups of which at least one is an oxetane group. The thermally initiated ring-opening polymerisation is performed using an effective amount of at least one initiator, such as a thermal onium salt, a Lewis acid and/or a Brønsted acid. The terminal groups in said hyperbranched dendritic polyether are substantially hydroxyl groups and used for said optional further processing.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: September 9, 2003
    Assignee: Perstorp AB
    Inventors: Helen Magnusson, Eva Malmstrom, Anders Hult, Nicola Rehnberg
  • Patent number: 6515152
    Abstract: A process for production of an oxetane, which process comprises subjecting an alcohol having two or more hydroxyl groups to reaction with a carbamide at a molar ratio employing 1-2 moles of said carbamide on 1-2 moles of said alcohol. The alcohols preferably have at least one 1,3-diol grouping. The reaction is carried out in the presence of at least one catalyst promoting and/or initiating transcarbonylation and/or pyrolysis. A reaction mixture comprising an oxetane and optionally an orthocarbonate of said alcohol is yielded. The oxetane is suitable recovered from said reaction mixture by for instance distillation.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: February 4, 2003
    Assignee: Perstorp AB
    Inventors: Ulf Annby, Nicola Rehnberg
  • Patent number: 6479656
    Abstract: A process and use of at least one catalyst for phosphorylation, in particular phosphitylation, of hydroxyl groups, whereby a phosphorous compound is added to a hydroxyfunctional compound having at least one hydroxyl group. The addition yields a phosphorylated product having at least one O—P bond. The catalyst employed in the process is of the general formula (R1)nX(R2)4−n, wherein each R1 independently is hydrogen, at least one hydrocarbyl, amino, halogenated and/or silylated hydrocarbyl group, X is Si, Ge or Sn, each R2 independently is a leavening group and is F, Cl, Br, I or a sulphonate group optionally being halogen substituted and wherein n is 1, 2 or 3.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: November 12, 2002
    Assignees: Perstorp AB, Polish Academy of Science, Centre of Molecular and Macromolecular Studies
    Inventors: Jan Michalski, Wojciech Dabkowski, Friedrich Cramer
  • Patent number: 6444149
    Abstract: Article made of thermoplastic material, which article is rigid and at least partly heat insulating. The article includes a laminate in at least parts of the article. The laminate includes a first and a second layer of solid thermoplastic material (A) and an intermediate layer of expanded thermoplastic material (B) with an average density of 50-800 kg/m3. The thermoplastic materials (A) and (B) are the same or compatible materials. The article is manufactured according to a process comprising the steps a) forming of a solid outer layer, b) manufacturing of an intermediate expanded layer and c) the appendage of functional parts such as reinforcing profiles, guiding profiles, stacking profiles, hinge parts, pockets, label holders, profiles or holes for automatic handling, locking devices or the like.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: September 3, 2002
    Assignee: Perstorp AB
    Inventor: Anders Valentinsson
  • Patent number: 6375777
    Abstract: Process for the production of a thermosetting laminate made of a number of continuous paper webs impregnated with a thermosetting resin. The dry webs are fed continuously between an upper and a lower press belt (101 and 102 respectively) of a continuous double belt press (100). The continuous paper webs are divided into at least two groups (10) each consisting of at least two sheets of which at least one is impregnated with a thermosetting resin. One or more separation sheets (1) are placed between the groups (10) of paper webs.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: April 23, 2002
    Assignee: Perstorp AB
    Inventors: Hans Sjölin, Håkan Larsson
  • Patent number: 6293432
    Abstract: Bag shaped inner layer in the form of a so-called liner (1) intended for use together with a carrying outer structure (2) when transporting and storing bulk goods. The liner (1) is provided with a supporting member (11) towards which a liner bag is folded and/or rolled whereby a self supporting package is formed. The liner (1) is provided with a socket (12) for filling and a socket (13) for emptying.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: September 25, 2001
    Assignee: Perstorp AB
    Inventor: Peter Hartwall
  • Patent number: 6290869
    Abstract: A lubricant ester having enhanced hydrolytic stability is disclosed. The ester is a mono or diester of 2-ethyl-2-butyl-1,3-propanediol or an alkoxylate thereof and at least one carboxylic acid having 5-10 carbon atoms. The invention in a further aspect refers to a refrigeration working fluid comprising said ester and at least one halocarbon refrigerant.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: September 18, 2001
    Assignee: Perstorp AB
    Inventors: Kent Sorensen, Keith Ogemark, Carl-Axel Sjogreen
  • Patent number: 6277910
    Abstract: The invention relates to a water-borne hybrid binder composition. It is obtained by mixing about 20-80% by weight of A), an aqueous dispersion of a polymer, said dispersion having a dry-solids content of at least 45% by weight, and containing at least 0.1% by weight of B) a single surfactant or a mixture of two or more different surfactants and protective colloids, and about 80-20% of C) one or more resins being emulsifiable in water and having a dry solids content above 90% by weight, by adding the resin C to the dispersion A under agitation, the resulting hybrid binder composition obtaining a dry-solids content of 60-95% by weight. The invention also relates to the use of the binder composition as a component in a paint or lacquer mixture.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: August 21, 2001
    Assignees: Akzo Nobel Industrial Coatings, AB, Hoechst-Perstorp AB
    Inventors: Jørgen Rassing, Michael Borén, Lars-Olof Ryrfors, Jan-Erik Jönsson
  • Patent number: 6251180
    Abstract: Shrinkage-reducing agent intended as additive in aqueous cement comprising compositions. The agent comprises at least one acetal, preferably a cyclic formal, of a tri- or polyhydric alcohol, which acetal comprises at least one 1,3-dioxa group. The acetal has preferably a water solubility of at least 1%. The agent can, in addition to said acetal, comprise at least one amorphous silica, preferably a powderous silica. The invention refers in a further aspect to the use of said agent in said compositions. The agent is, when used, added to said composition in an amount of 0.1-20% by weight.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: June 26, 2001
    Assignee: Perstorp AB
    Inventors: Jens Engstrand, Carl-Axel Sjögreen
  • Patent number: 6225404
    Abstract: A thermoplastic compound comprising at least one linear or branched thermoplastic polymer or copolymer, having at least one reactive or graftable site (F1), which polymer is compounded with at least one hyperbranched dendritic polyester macromolecule being composed of a monomeric or polymeric nucleus and one or more monomeric or polymeric branching or spacing chain extenders. The macromolecule is optionally chain terminated and/or functionalized, whereby terminal chain extender functions, chain termination and/or functionalization provides the macromolecule with at least one reactive or graftable site (F2) being reactive to or graftable onto said reactive or graftable site (F1). In a further aspect, the invention relates to a thermoplastic composition comprising two or more components, whereby at least one is said thermoplastic compound. In yet a further aspect, the invention relates to a thermoplastic article made of one or more thermoplastic compounds, whereby at least one is said thermoplastic compound.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: May 1, 2001
    Assignee: Perstorp AB
    Inventors: Kent Sorensen, Bo Pettersson, Louis Boogh, Jan-Anders Edvin Mansson
  • Patent number: 6211329
    Abstract: A process for synthesis of a polymeric polyalcohol substantially and preferably built up form polyester units and composed of a monomeric or polymeric initiator molecule to which at least one dentritic branch (dendron) consisting of a number of branching generations is added. The branching generations comprise a polymericor monomeric branching chain extender having three reactive functions of which two are hydroxyl groups. The two hydroxyl groups of the ranching chain extender is acetal protected by reaction between said two hydroxyl groups and an acetal-forming carbonyl compound, preferably an aldehyde. The acetal protected branching chain extender is then employed for addition to the initiator molecule of a first branching generation followed by an optional deprotection of the hydroxyl groups by decomposition of acetals and for addition in repeated steps of further branching generations.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: April 3, 2001
    Assignee: Perstorp AB
    Inventors: Nicola Rehnberg, Bo Pettersson, Ulf Annby, Mats Malmberg
  • Patent number: 6188840
    Abstract: A process for the manufacturing of a pressure vessel made from a thermoplastic material or a thermosetting resin. The vessel comprises a first and a second vessel end part, and possibly an intermediate tube part. The vessel end parts include a circumfering shell (4) and each one dome (3). A number of partition and load distributing walls (5) stretch from the domes (3) towards the open part of each vessel end part. The possible intermediate tube part includes similar walls (5). The edges of the walls (5) will meet when the different parts are joined. A number of cells (6) are formed between the walls (5). A number of crossing areas are formed between intersecting walls (5). At least one crossing area is provided with a determination by achieving a hole (14) from the outside of the dome. The hole (14) is bigger than the crossing area and has a depth greater than thickness of the dome part (3).
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: February 13, 2001
    Assignee: Perstorp AB
    Inventors: Witold Orlowski, Olof Norrlöw