Patents Assigned to DYNEA AS
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Patent number: 11505679Abstract: The disclosure concerns a composition for three-dimensional printing, said composition being free from polylactic acid (PLA) and includes the following components: (a) a polysaccharide comprising a cellulose derivative and/or a lignocellulosic derivative; (b) a pH regulator selected from at least one of the following: organic acids, inorganic acids, acid generating salts, bases, buffers, (c) a resin selected from melamine resin and/or phenol resin, and (d) optionally a rheology modifier selected from water and/or glycerol. The disclosure also concerns a kit of parts for producing the described composition, a method for three-dimensional printing of the described composition and articles obtainable by said method.Type: GrantFiled: May 16, 2018Date of Patent: November 22, 2022Assignee: DYNEA ASInventors: Kristina Durkic, Rory Morrish, Edward John Sutcliffe
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Patent number: 9102040Abstract: The present invention provides process for the manufacture of an aqueous resin composition comprising a phenolic formaldehyde (PF) resin, which process comprises the steps of providing a formaldehyde and phenolic compound, reacting the compounds in a condensation reaction in the presence of a catalyst, after completion of the condensation reaction to react with free formaldehyde, determining the free formaldehyde content of the resin composition, adding a pre-calculated substantially stoichiometric amount of modifying compound containing a primary amine group to reduce the amount of free formaldehyde in the resin composition to less than 0.1 wt % (relative to the total weight of the aqueous resin composition), and optionally distillation of the reaction product.Type: GrantFiled: September 30, 2011Date of Patent: August 11, 2015Assignee: Dynea Chemicals OyInventor: Armin Tumler
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Publication number: 20140014267Abstract: The invention relates to an improved two component adhesive system, a kit comprising said two adhesive components, its use and a method for production of interior wood products, in particular form-pressed products, parquet floor elements and solid wood panels with very low formaldehyde emission and to the interior wood products obtainable having improved properties. The two-component adhesive system comprises adhesive component I comprising a 50-70 wt % melamine-formaldehyde (MF) type resin in 25-40 wt % water and adhesive component II comprising 25-40 wt % of a water based dispersion adhesive, 15-40 wt % of a formaldehyde scavenger and an acidic compound in an amount such that the pH of adhesive component II is 1.5-6.5, wherein adhesive component I and II are to be applied in a weight ratio I:II of 1:0.5 to 1:1.5 and the adhesive system has a molar ratio of formaldehyde (F) to total amino group (F/NH2) between 0.2 and 0.7.Type: ApplicationFiled: February 4, 2013Publication date: January 16, 2014Applicant: DYNEA ASInventors: Astrid PEDERSEN, Kristin GROSTAD, Per SANDBAKKEN
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Publication number: 20130232884Abstract: The present invention provides process for the manufacture of an aqueous resin composition comprising a phenolic formaldehyde (PF) resin, which process comprises the steps of: providing a formaldehyde and phenolic compound, reacting said compounds in a condensation reaction in the presence of a catalyst, after completion of the condensation reaction to react with free formaldehyde, determining the free formaldehyde content of the resin composition, adding a pre-calculated substantially stoichiometric amount of modifying compound containing a primary amine group to reduce the amount of free formaldehyde in the resin composition to less than 0.1 wt % (relative to the total weight of the aqueous resin composition), and optionally distillation of the reaction product.Type: ApplicationFiled: September 30, 2011Publication date: September 12, 2013Applicant: Dynea Chemicals OyInventor: Armin Tumler
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Patent number: 8461259Abstract: The invention relates to a binder for producing materials based on wood chips and/or wood fibers. The aim of the invention is to design a binder which is used for producing and gluing materials based on wood chips and/or wood fibers, contains natural protein components, significantly reduces or even eliminates the drawbacks of the prior art, and can be economically produced and used. Said aim is achieved by a binder which is used for materials based on wood chips and/or wood fibers, comprises an aldehyde-based condensation resin and other additives, and is characterized in that the binder comprises a water-soluble reactive additive containing a peptide/amino acid mixture without moieties of water-insoluble and high-viscosity proteins. The invention also relates to a method for producing said binder as well as a molded article.Type: GrantFiled: December 17, 2008Date of Patent: June 11, 2013Assignee: Dynea OyInventors: Hendrikus W. G. van Herwijnen, Wolfgang Heep, Detlef Krug, Andreas Weber, Axel Höhling, Maria Schultze
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Patent number: 8444805Abstract: The invention relates to an improved two component adhesive system, a kit comprising said two adhesive components, its use and a method for production of interior wood products, in particular form-pressed products, parquet floor elements and solid wood panels with very low formaldehyde emission and to the interior wood products obtainable having improved properties. The two-component adhesive system comprises adhesive component I comprising a 50-70 wt % melamine-formaldehyde (MF) type resin in 25-40 wt % water and adhesive component II comprising 25-40 wt % of a water based dispersion adhesive, 15-40 wt % of a formaldehyde scavenger and an acidic compound in an amount such that the pH of adhesive component II is 1.5-6.5, wherein adhesive component I and II are to be applied in a weight ratio I:II of 1:0.5 to 1:1.5 and the adhesive system has a molar ratio of formaldehyde (F) to total amino group (F/NH2) between 0.2 and 0.7.Type: GrantFiled: February 11, 2011Date of Patent: May 21, 2013Assignee: Dynea OyInventors: Astrid Pedersen, Kristin Grøstad, Per Olav Sandbakken
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Publication number: 20120316271Abstract: A high gloss laminated panel is manufactured by applying a layer of a resin composition on a substrate layer and applying elevated pressure at elevated temperature for a time sufficient to at least partially cure the resin preferably without back-cooling. The resin composition includes a melamine formaldehyde resin in water and further includes one or more additives chosen from the group of thiourea, 1-amino-2-thiourea, stabilized guanidine, thio-acetamide, or an additive.Type: ApplicationFiled: August 22, 2012Publication date: December 13, 2012Applicant: DYNEA OYInventors: Robert Alexander WAGNER, Adisa COKOVIC, Harald TRACHSLER, Karin LEPEDAT
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Publication number: 20120315389Abstract: Condensation adhesives are applied via a contactless system and method to a wood substrate, such as laminate beams. The adhesive is modified and applied in particular to a finger surface of a substrate via a contactless application device. The contactless application device has at least 2 nozzles for ejecting adhesive onto the substrate without contacting the substrate. The modified adhesive includes a condensation resin selected from the group of urea formaldehyde (UF) resin, melamine formaldehyde resin (MF), modified melamine formaldehyde resin (xMF) and phenol resorcinol formaldehyde resin (PRF) or combinations thereof, and optionally a hardener. The adhesive rheology is modified by at least one of: cooling to a temperature between 5 and 15° C., including into the adhesive a viscosity increasing substance, and/or including a thixotropic increasing substance in an effective amount to prevent sagging of the adhesive on the surface.Type: ApplicationFiled: August 21, 2012Publication date: December 13, 2012Applicant: DYNEA OYInventors: Geir Ove MANNSVERK, Einar Mørland, Kristin Grøstad, Trana Bjørn
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Patent number: 8133952Abstract: A formaldehyde-free curable aqueous composition containing polyvinyl alcohol, a multi-functional crosslinking agent, and, optionally, a catalyst. The composition may be used as a binder for non-woven products such as fiberglass insulation. The non-woven products are formed by contacting the formaldehyde-free curable aqueous composition with fibrous components and the mixture is cured to form a rigid thermoset polymer providing excellent strength and water resistance of the cured nonwoven product.Type: GrantFiled: May 5, 2006Date of Patent: March 13, 2012Assignee: Dynea OyInventors: Elena Pisanova, Robert Schmidt, Alexander Tseitlin
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Publication number: 20110198028Abstract: The invention relates to an improved two component adhesive system, a kit comprising said two adhesive components, its use and a method for production of interior wood products, in particular form-pressed products, parquet floor elements and solid wood panels with very low formaldehyde emission and to the interior wood products obtainable having improved properties. The two-component adhesive system comprises adhesive component I comprising a 50-70 wt % melamine-formaldehyde (MF) type resin in 25-40 wt % water and adhesive component II comprising 25-40 wt % of a water based dispersion adhesive, 15-40 wt % of a formaldehyde scavenger and an acidic compound in an amount such that the pH of adhesive component II is 1.5-6.5, wherein adhesive component I and II are to be applied in a weight ratio I:II of 1:0.5 to 1:1.5 and the adhesive system has a molar ratio of formaldehyde (F) to total amino group (F/NH2) between 0.2 and 0.7.Type: ApplicationFiled: February 11, 2011Publication date: August 18, 2011Applicant: DYNEA OYInventors: Astrid PEDERSEN, Kristin GRØSTAD, Per Olav SANDBAKKEN
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Patent number: 7994243Abstract: An aqueous composition including a particulate novolac resin and a polyol, wherein >50% of the number of total particles of novolac resin have a particle size of >15 ?m and >5% of the number of total particles of novolac resin have a particle size of >50 ?m, wherein the particulate novolac resin has a dropping point temperature of >127° C., and wherein the aqueous composition is essentially free of organic solvent. The aqueous composition will form a stable dispersion which is ideal for the preparation of a film or coating of substrates such as fiberglass, nonwoven fibers, or lignocellulosic materials which include composite boards, plywoods, parquets, laminated veneer lumber (LVL), laminated flooring, doors, wood for door frames and paper.Type: GrantFiled: August 7, 2007Date of Patent: August 9, 2011Assignee: Dynea OyInventors: Elke Fliedner, Marc Cornick, Hendrikus W. G. Van Herwijnen
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Publication number: 20110183076Abstract: The invention relates to a method for treating a wood board. According to the invention, a composition containing a hydrophobic agent is provided onto the surface of the wood board and coating agent is provided over it to form a coating layer.Type: ApplicationFiled: June 26, 2009Publication date: July 28, 2011Applicants: Dynea Oy, Metsaliitto OsuuskuntaInventors: Ilpo Silventoinen, Kasperi Sokka, Juha Lipponen
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Patent number: 7893154Abstract: A formaldehyde-free curable aqueous composition comprising an adduct of (a) carbohydrate polymer and (b) a multi-functional crosslinking agent such as a polybasic acid may be used as a binder for non-woven products such as fiberglass insulation.Type: GrantFiled: November 1, 2007Date of Patent: February 22, 2011Assignee: Dynea OyInventors: Hendrikus W. G. Van Herwijnen, Elena Pisanova, Barbara Stefke
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Publication number: 20110021669Abstract: The invention relates to a binder for producing materials based on wood chips and/or wood fibers. The aim of the invention is to design a binder which is used for producing and gluing materials based on wood chips and/or wood fibers, contains natural protein components, significantly reduces or even eliminates the drawbacks of the prior art, and can be economically produced and used. Said aim is achieved by a binder which is used for materials based on wood chips and/or wood fibers, comprises an aldehyde-based condensation resin and other additives, and is characterized in that the binder comprises a water-soluble reactive additive containing a peptide/amino acid mixture without moieties of water-insoluble and high-viscosity proteins. The invention also relates to a method for producing said binder as well as a molded article.Type: ApplicationFiled: December 17, 2008Publication date: January 27, 2011Applicant: DYNEA OYInventors: Hendrikus W. G. van Herwijnen, Wolfgang Heep, Andreas Weber, Axel Höhling, Maria Schultze
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Publication number: 20110014487Abstract: A system and method for the continuous production of an aqueous amino formaldehyde resin solution including the steps of (a) preparing a reaction mixture of an amino compound and an aqueous formaldehyde, (b) adding a catalyst to the reaction mixture, (c) condensation reacting the reaction mixture in the presence of the catalyst in a continuous plug flow, wherein in step (a) the amino compound and the formaldehyde are added as a concentrated aqueous solution or as a solid to a total solid content in the reaction mixture of 40-85 wt % (dry weight relative to the total weight of the reaction mixture), and in step (b) the catalyst is continuously added and finely dispersed into the reaction mixture through one or more addition points and optionally adding an amount of amino compound after condensation and/or removing water to reach a higher solid content.Type: ApplicationFiled: June 21, 2010Publication date: January 20, 2011Applicant: Dynea OYInventors: Michael GANN, Marianne Tveter
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Publication number: 20110015341Abstract: A phenol-formaldehyde resin, which can be obtained by alkalinically catalyzed condensation of phenol and formaldehyde in the presence of at least one salt of inorganic acids and by neutralization by means of an inorganic or organic acid following the condensation, wherein the production takes place with the addition of at least one compound of the formula R1—(CH2)n—R2, in which R1 and R2, independently of one another, stand for —C(O)R, —COOR, —CN, or —NO2, and R represents H or CH3, and n has the value of 1 or 2. Also disclosed are the production of such resins and their use as binders for mineral-fiber-based insulating products.Type: ApplicationFiled: January 21, 2008Publication date: January 20, 2011Applicant: Dynea OyInventors: Stefan Kowatsch, Karl Loidolt, Christoph Prock
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Publication number: 20100310867Abstract: A water dilutable binder resin for use in an inorganic fiber material; wherein the binder resin is prepared by reacting at least the following components in any order: (a) proteinaceous material which is substantially soluble in water at 20° C. and has a viscosity of <50 mPa*s for a 25 wt % aqueous solution, (b) an aromatic hydroxyl compound, and (c) an aldehyde, and wherein the water dilutable binder resin has a property of having a viscosity of <100 mPa*s when measured at a concentration of 50 wt % at 20° C. During curing, the resin thus produced gives lower phenol emissions. Also, the formaldehyde and ammonia emissions are dramatically lower when compared to conventional resins.Type: ApplicationFiled: December 18, 2008Publication date: December 9, 2010Applicant: Dynea OyInventors: Hendrikus W.G. Van Herwijnen, Wolfgang Heep
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Publication number: 20100255248Abstract: The invention relates to a process for the manufacture of a weather resistant laminate comprising a resin impregnated fibrous layer, preferably a resin impregnated decorative paper layer on a carrier layer. The invention further relates to laminates obtainable with the process according to the invention, to an intermediate laminate for use in the manufacture of the weather resistant laminate and to the use of said laminates.Type: ApplicationFiled: April 9, 2010Publication date: October 7, 2010Applicant: Dynea OYInventors: Harald Karl Steindl, Robert Alexander Wagner, Fergus Michael Gannon, Barbara Sylvia Stefke
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Patent number: 7807749Abstract: A formaldehyde-free curable aqueous composition containing a hydroxy-containing polymer, a multi-functional crosslinking agent, and, optionally, a catalyst. The composition is used as a binder for lignocellulosic materials such as plywood, fiber particleboard, medium density fiberboard and oriented strand board.Type: GrantFiled: January 11, 2007Date of Patent: October 5, 2010Assignee: Dynea OyInventors: Elena Pisanova, Humayun Mandal
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Publication number: 20100239772Abstract: The invention relates to a water dilutable resin composition including a resin that is a reaction product of an aldehyde and a hydroxyl-aromatic compound, the composition further including an amino compound comprising 2-6 amino groups and a sugar alcohol, wherein the resin has an initial molar ratio of aldehyde to hydroxyl-aromatic compound from 2.3 to 5.5, a ratio of resin to amino compound plus sugar alcohol of 45:55 to 70:30 parts by weight, a ratio of amino compound to resin between 20:80 and 50:50 parts by weight and a ratio of sugar alcohol to resin plus amino compound is between 5:95 and 30:70 parts by weight. The invention further relates to a process for the manufacture the resin composition, to the use of the resin composition as binder material for non-woven fibrous material, in particular insulation materials, and to a process for the manufacture of such insulation material.Type: ApplicationFiled: March 26, 2010Publication date: September 23, 2010Applicant: Dynea OYInventors: Hendrikus W.G. Van Herwijnen, Christoph Prock