Patents by Inventor Lambertus P. P. M. van der Heijden

Lambertus P. P. M. van der Heijden 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).

  • Copolymers of ethylene and 1-heptene
    Patent number: 7312295
    Abstract: The present invention relates to a copolymer comprising units derived from ethylene and 1-heptene, to a composition comprising such a copolymer, and to an article prepared from or containing such a copolymer.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: December 25, 2007
    Assignee: Dow Global Technologies Inc.
    Inventors: Hendrik H. Hagen, Lambertus P. P. M. Van Der Heijden
  • Mono-olefin/polyene interpolymers, method of preparation, compositions containing the same, and articles made thereof
    Patent number: 5814714
    Abstract: Interpolymer of a) a mono-olefin selected from the group consisting of .alpha.-olefins and cyclic olefins, and b) a non-conjugated polyene having at least 7 carbon atoms and having two readily polymerizable double bonds, having an improved melt tension, improved processability, or a combination of both, a process of preparing such interpolymers, composition comprising such interpolymers and one or more further natural or synthetic polymers or one or more additives or adjuvants, as well as articles obtained by subjecting such interpolymers to melt processing conditions.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: September 29, 1998
    Assignee: The Dow Chemical Company
    Inventors: Jesus Nieto Palomo, Patrick J. C. Schouterden, Debra Jean Mangold, Lambertus P. P. M. van der Heijden, Miguel Garcia Marti
  • Method for preparing a film having preferential one-sided cling
    Patent number: 4664866
    Abstract: A polymeric film having preferential one-sided cling is prepared from a relatively crystalline polymer such as a copolymer of ethylene and an .alpha.-olefin having at least 3 carbon atoms, e.g., 1-octene (linear low density polyethylene); a relatively amorphous polymer such as low density polyethylene and a tackifying polymer such as a low molecular weight polybutene by extruding a film of the blend at melt temperatures and subsequently cooling the two sides of the extruded film at different rates.In addition to preferential one-sided cling, a film of a low density polyethylene, linear low density polyethylene and a low molecular weight polybutene which exhibits excellent film strengths and high resistance to tear, particularly in the cross direction, is prepared.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: May 12, 1987
    Assignee: The Dow Chemical Company
    Inventor: Lambertus P. P. M. van der Heijden
  • Polymeric films having one-sided cling and compositions useful in their preparation
    Patent number: 4542188
    Abstract: A polymeric film prepared from a relatively crystalline polymer such as a copolymer of ethylene and an .alpha.-olefin having at least 3 carbon atoms, e.g., 1-octene (linear low density polyethylene); a relatively amorphous polymer such as low density polyethylene and a tackifying polymer such as a low molecular weight polybutene exhibits a substantially higher cling on one side than the other.A film of a low density polyethylene, linear low density polyethylene and a low molecular weight polybutene also exhibits excellent film strengths and as unexpectedly high resistance to tear, particularly in the cross-direction.
    Type: Grant
    Filed: November 25, 1981
    Date of Patent: September 17, 1985
    Assignee: The Dow Chemical Company
    Inventor: Lambertus P. P. M. van der Heijden