Patents by Inventor Hendrikus W. G. Van Herwijnen

Hendrikus W. G. Van Herwijnen 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).

  • Publication number: 20230086035
    Abstract: The invention relates to an aqueous resin composition and a method for the manufacture of an aqueous resin composition which resin is a reaction product of an oxidised polysaccharide and a crosslinking agent, which oxidised polysaccharide is an oxidised cellulose comprising aldehyde groups, which crosslinking agent comprises two or more groups reactive with the aldehyde groups, wherein the aldehyde groups in the resin in the aqueous resin composition are in hydrated or un-hydrated form and are at least partly converted to inter- or intramolecular hemiacetals, wherein the resin is dispersed and/or dissolved but not gelled.
    Type: Application
    Filed: March 5, 2021
    Publication date: March 23, 2023
    Inventors: Hendrikus W. G. VAN HERWIJNEN, Wolfgang KANTNER, Arianna LUCIA, Thomas ROSENAU
  • Patent number: 8461259
    Abstract: 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: Grant
    Filed: December 17, 2008
    Date of Patent: June 11, 2013
    Assignee: Dynea Oy
    Inventors: Hendrikus W. G. van Herwijnen, Wolfgang Heep, Detlef Krug, Andreas Weber, Axel Höhling, Maria Schultze
  • Patent number: 7994243
    Abstract: 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: Grant
    Filed: August 7, 2007
    Date of Patent: August 9, 2011
    Assignee: Dynea Oy
    Inventors: Elke Fliedner, Marc Cornick, Hendrikus W. G. Van Herwijnen
  • Patent number: 7893154
    Abstract: 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: Grant
    Filed: November 1, 2007
    Date of Patent: February 22, 2011
    Assignee: Dynea Oy
    Inventors: Hendrikus W. G. Van Herwijnen, Elena Pisanova, Barbara Stefke
  • Publication number: 20110021669
    Abstract: 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: Application
    Filed: December 17, 2008
    Publication date: January 27, 2011
    Applicant: DYNEA OY
    Inventors: Hendrikus W. G. van Herwijnen, Wolfgang Heep, Andreas Weber, Axel Höhling, Maria Schultze
  • Publication number: 20100310867
    Abstract: 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: Application
    Filed: December 18, 2008
    Publication date: December 9, 2010
    Applicant: Dynea Oy
    Inventors: Hendrikus W.G. Van Herwijnen, Wolfgang Heep
  • Publication number: 20100239772
    Abstract: 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: Application
    Filed: March 26, 2010
    Publication date: September 23, 2010
    Applicant: Dynea OY
    Inventors: Hendrikus W.G. Van Herwijnen, Christoph Prock
  • Publication number: 20090017709
    Abstract: 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: Application
    Filed: August 7, 2007
    Publication date: January 15, 2009
    Applicant: Dynea Oy
    Inventors: Elke Fliedner, Marc Cornick, Hendrikus W.G. Van Herwijnen
  • Publication number: 20080108741
    Abstract: 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: Application
    Filed: November 1, 2007
    Publication date: May 8, 2008
    Applicant: Dynea Oy
    Inventors: Hendrikus W.G. Van Herwijnen, Elena Pisanova, Barbara Stefke