Patents Assigned to DSM
  • Patent number: 4528341
    Abstract: An improved carboxyl-group-containing polyester resin composition as described of an aromatic carboxylic acid and an aliphatic diol having the following combination of properties: (a) an acid number between 10 and 26 mg KOH/g, (b) a hydroxyl number that is smaller than 15 mg KOH/g, (c) a theoretical number-average molecular weight between 4,500 and 12,500 and (d) a glass transistion temperature between 40.degree. and 85.degree. C.
    Type: Grant
    Filed: August 8, 1984
    Date of Patent: July 9, 1985
    Assignee: DSM Resins B.V.
    Inventors: Eimbert G. Belder, Robert van der Linde, Jan Schippers
  • Patent number: 4499235
    Abstract: Powdery coating agent, suitable for application in the in-mould coating technique, comprising as the main component, besides a curing catalyst and if desired other additives, a crystalline unsaturated polyester with a melting point of at least 40.degree. C., a degree of unsaturation of between 1 and 5 moles unsaturation per 1000 g polyester and a viscosity in the melt at 120.degree. C. of at least 1 dPa.s.
    Type: Grant
    Filed: September 21, 1983
    Date of Patent: February 12, 1985
    Assignee: DSM Resins B.V.
    Inventors: Andreas N. J. Verwer, Johannes T. M. Evers
  • Patent number: 4497937
    Abstract: Polymers containing organotin compounds having advantageous use as paint binders obtained by reacting a cyclized rubber with organotin compounds of the formula R.sub.3 --Sn--O--Z wherein R represents a hydrocarbon group from 1 to 15 carbon atoms and Z is a phenolate group derived from a phenolic compound having from 6 to 15 carbon atoms. In marine applications paints incorporating such polymers remain un-fouled after extended use and are self-polishing. Such polymers are obtained by reacting cyclized rubber and an organotin compound at an elevated temperature in an inert solvent.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: February 5, 1985
    Assignee: DSM Resins, B.V.
    Inventors: Jacob P. van der Klooster, Johannes P. M. van Oosterbos
  • Patent number: 4487886
    Abstract: The invention relates to a process for the production of an object from a granular ABS polymer composition, said composition comprising a mixture ofI 10-98 parts by weight of one or more graft copolymers obtained by polymerizing a mixture of one or more unsaturated nitriles and one or more vinylaromatic compounds in the presence of a rubber.II 2-90 parts by weight of a copolymer of one or more unsaturated nitriles and one or more vinylaromatic compounds, andIII 0-20 parts by weight of one or more additives, wherein the polymer composition is melted, homogenized, and extruded or injection molded into an object.To improve the flow properties of the mixture introduced into the processing equipment and the throughput of this equipment the invention is characterized in that the ratio between the average particle size (by weight) of the copolymer II to the average particle size (by weight) of the graft copolymer I exceeds 1.5.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: December 11, 1984
    Assignee: Stamicarbon B.V., Licensing Subsidiary of DSM
    Inventors: Leslie G. W. Dunning, Jean P. L. M. N. de Warrimont
  • Patent number: 4471108
    Abstract: An improved carboxyl-group-containing polyester resin composition as described of an aromatic carboxylic acid and an aliphatic diol having the following combination of properties: (a) an acid number between 10 and 26 mg KOH/g, (b) a hydroxyl number that is smaller than 15 mg KOH/g, (c) a theoretical number-average molecular weight between 4,500 and 12,500 and (d) a glass transition temperature between 40 and 85.degree. C.
    Type: Grant
    Filed: March 24, 1983
    Date of Patent: September 11, 1984
    Assignee: DSM Resins B.V.
    Inventors: Eimbert G. Belder, Robert Van Der Linde, Jan Schippers
  • Patent number: 4463140
    Abstract: Powder coatings and a powder composition having a valuable combination of characteristics are described, composed of a homogeneous mixture of between 1.9 and 9.0 wt. % of a diglycidyl phthalate and between 91.0 and 98.1 wt. % of a polyester, wherein said polyester has (a) an acid number between 10 and 30 mg KOH/g, (b) a hydroxyl number less than 15 mg KOH/g, (c) a theoretical number-average molecular weight between 3,750 and 12,500 and (d) a glass transition temperature between 48.degree. and 85.degree. C.
    Type: Grant
    Filed: March 24, 1983
    Date of Patent: July 31, 1984
    Assignee: DSM Resins B.V.
    Inventors: Eimbert G. Belder, Robert van der Linde, Jan Schippers