Patents by Inventor Boudewijn J. R. Scholtens

Boudewijn J. R. Scholtens 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).

  • Patent number: 6835799
    Abstract: The invention relates to a randomly branched polyamide comprising at least units derived from: 1. AB monomers, 2. at least one compound I, being a carboxylic acid (Av) having a functionality v≧2 or an amine (Bw) having a functionality w≧2, 3. at least one compound II, being a carboxylic acid (Av) having a functionality v≧3 or an amine (Bw) having a functionality w≧3, compound II being a carboxylic acid if compound I is an amine or compound II being an amine if compound I is a carboxylic acid and the amounts of all units derived from carboxylic acids and amines in the polyamide satisfying conditions as mentioned in claim 1. The composition of the randomly branched polyamide is such that it cannot form a crosslinked polyamide (and thus no gels, either), in particular during the prepolymerization, the polymerization, the post-condensation, the processing and the storage of the randomly branched polyamide, and this at a variety of ambient factors, for instance at elevated temperature and pressure.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: December 28, 2004
    Assignee: DSM IP Assets B. V.
    Inventors: Atze J. Nijenhuis, René Aberson, Boudewijn J. R. Scholtens
  • Publication number: 20020022712
    Abstract: The invention relates to a randomly branched polyamide comprising at least units derived from:
    Type: Application
    Filed: June 18, 2001
    Publication date: February 21, 2002
    Inventors: Atze J. Nijenhuis, Rene Aberson, Boudewijn J.R. Scholtens
  • Patent number: 4963299
    Abstract: The invention relates to a process for the treatment of surfaces of highly oriented polyolefin objects, obtained by converting a solution or melt of a linear polyolefin with a weight average molecular weight of at least 400.000 g/mol, at a temperature above the dissolution temperature, respectively above the melting temperature, into a shaped object, converting this object into a gel-object by cooling, and stretching the gel-object at elevated temperature optionally after full or partial removal of the solvent, in which the surface of the object is contacted with a solution of a radical-forming compound and that the object is then exposed to a temperature of at least 30.degree. C. for at least 1 minute.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: October 16, 1990
    Assignee: Stamicarbon B.V.
    Inventors: Boudewijn J. R. Scholtens, Hendrikus J. J. Rutten