Patents by Inventor Jacobus van Rijn

Jacobus van Rijn 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).

  • Aromatic modified aliphatic hydrocarbon resins giving an excellent balance between tack and shear properties
    Patent number: 6218588
    Abstract: The invention relates to aromatic modified aliphatic hydrocarbon resins giving excellent balance between tack and shear properties even at low coating weights. These resins are characterized in that they have a Ring and Ball (R&B) softening point of 94° C. or lower, a weight average molecular weight (Mw) of not more than 2000 Dalton, a Z-average molecular weight (Mz) of not more than 6000 Dalton and a mixed methylcyclohexane aniline cloud point (MMAP) between 25 and 45° C. The aromatic modified aliphatic hydrocarbon resins of the invention may be prepared by subjecting polymerization feeds containing petroleum feeds which comprise (a) C5 and C6 olefins and/or diolefins including cycloolefins, (b) aromatic monomers and (c) (di-)cyclodiolefins to a Friedel-Crafts polymerization. The invention is also directed to the use of the aromatic modified aliphatic hydrocarbon resins as mono-tackifiers in adhesive formulations as well as to an adhesive tape comprising these resins.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: April 17, 2001
    Assignee: Hercules Incorporated
    Inventors: Nicolaas Adriaan Dommisse, Christiaan Pieter Louis Charles Donker, Michael Hendrikus Theelen, Jacobus van Rijn, Gerard Arie Verrijzer