Patents by Inventor Noël De Keyzer

Noël De Keyzer 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).

  • Low Viscosity, Hot-Melt Stable Adhesive Compositions
    Publication number: 20070299195
    Abstract: Low viscosity, hot-melt stable adhesive composition, comprising: a) at least one block copolymer, comprising at least two terminal poly(vinyl aromatic) blocks and at least one central block of randomly copolymerised isoprene/butadiene mixtures in an isoprene/butadiene weight ratio of from 45/55 to 55/45, having a poly(vinyl aromatic) content in the range of from 17 to 20%, a total apparent molecular weight in the range of from 180,000 to 190,000, a content of 1,2-vinyl bonds and/or 3,4 vinyl bonds, each in a proportion of at most 15 wt % in the conjugated diene blocks, and a coupling efficiency in the range of from 63-87%, occurring in a weight proportion of from 40 to 45 wt %, relative to the weight of the complete composition; b) an aliphatic/aromatic hydrocarbon tackifying resin, containing less than 16% by weight of aromatic structure as determined by H-NMR, a differential scanning calorimetry (DSC) glass transition temperature (Tg) between 30 and 55° C.
    Type: Application
    Filed: December 17, 2004
    Publication date: December 27, 2007
    Inventors: Noel de Keyzer, Jeffrey Southwick, Gornelis van Dijk
  • Low Hot-Melt Viscosity Adhesive Composition for Non-Wovens
    Publication number: 20070249781
    Abstract: Low hot-melt adhesive compositions used in non-woven assemblies, comprising: a) 100 parts by weight of a block copolymer of the formula S-(I/B)-S, wherein S represents a predominantly poly(styrene) block and (I/B) represents a polymer block obtained by at random copolymerization of a mixture of predominantly isoprene and butadiene in a weight ratio in the range of from 60:40 to 40:60, wherein the total block copolymer has an apparent molecular weight in the range of from 124,000 to 145,000 and has a poly(styrene) content of from 30 to 34 wt % and a coupling efficiency of from 60 to 100 %, b) from 250 to 300 parts by weight of a tackifying resin, c) from 5 to 150 parts by weight of a plasticizer, and d) from 1 to 3 parts by weight of auxiliaries, such as stabilizers and/or antioxidants, and disposable articles, comprising at least a non-woven element and assembled by the use of said low hot-melt adhesive compositions as well as block copolymers used therein.
    Type: Application
    Filed: February 11, 2005
    Publication date: October 25, 2007
    Inventors: Noel De Keyzer, Cornelis van Dijk
  • Adhesive composition and tapes and labels dervived therefrom
    Publication number: 20060155062
    Abstract: Adhesive composition for tapes, labels and bandages to be used at temperatures of +5° C.
    Type: Application
    Filed: February 19, 2004
    Publication date: July 13, 2006
    Inventor: Noël De Keyzer