22.
    发明专利
    未知

    公开(公告)号:DE102009034901A1

    公开(公告)日:2010-03-25

    申请号:DE102009034901

    申请日:2009-07-27

    Inventor: SIMPSON SCOTT S

    Abstract: A polymer foam layer is disclosed, having a first surface and an opposite second surface; and a plurality of magnetic, electrically conductive, high aspect ratio particles aligned into mutually isolated columns that essentially continuously span the foam between the first surface and the opposite second surface of the polymer foam layer. Methods for the manufacture of the layers are also disclosed. The foams are useful as gaskets for electromagnetic shielding, grounding pads, battery contact conductive spring elements, and the like.

    Process for manufacturing polyurethane using a metal acetyl acetonate/acetyl acetone catalyst system and the product made therefrom

    公开(公告)号:GB2303372B

    公开(公告)日:1999-03-03

    申请号:GB9613890

    申请日:1996-07-03

    Inventor: SIMPSON SCOTT S

    Abstract: Nickel acetyl acetonate catalysts used in the manufacture of polyurethanes and particularly polyurathane foam, is replaced with a more environmentally friendly organo-metallic catalyst, specifically other metal acetyl acetonates such as iron or copper. In accordance with an important feature of this invention, in addition to the metal acetyl acetonate, the catalyst system also includes acetyl acetone. The acetyl acetone acts as a delay mechanism to delay the catalytic action of the metal acetyl acetonate which is normally highly catalytic at relatively low temperatures. It will be appreciated that high catalytic activity at relatively low temperature will lead to deleterious premature cure. By adding acetyl acetone into the catalyst system, the acetyl acetone acts to delay and/or slow the catalytic action of the metal acetyl acetonate until the polyurethane is heated at which point the acetyl acetone is driven off and the metal acetyl acetonate then provides a relatively fast cure at the elevated temperature.

    Polyurethanschaumzusammensetzung und Verfahren zu ihrer Herstellung

    公开(公告)号:DE10132141B4

    公开(公告)日:2015-07-16

    申请号:DE10132141

    申请日:2001-06-28

    Inventor: SIMPSON SCOTT S

    Abstract: Polyurethanschaum, der gebildet wird, indem eine Mischung, die einen organischen Isocyanatbestandteil mit einer Funktionalität mit 2,0 bis 2,25; einen aktiven Wasserstoff enthaltenden Bestandteil, der mit dem Polyisocyanatbestandteil reaktiv ist; ein oberflächenaktives Mittel und einen Katalysatorbestandteil enthält, geschäumt wird, wobei die OH-Zahl der Mischung 100 bis 180 beträgt, und die geschäumte Mischung ausgehärtet wird, wobei der gehärtete Schaum eine Dichte im Bereich von 324 bis 648 kg/m3 (20 bis 40 Pfund pro Kubikfuß), Zellen mit mittleren Durchmessern von 20 bis 60 μm (Mikron) und Zellöffnungen mit mittleren Durchmessern von 1 bis 25 μm (Mikron) aufweist, das Verhältnis von mittlerem Zelldurchmesser zum mittleren Zellöffnungsdurchmesser 3 bis 10 beträgt und das Molekulargewicht zwischen den Vernetzungen 3.000 bis 10.000 beträgt.

    Conductive polymer foam composites
    29.
    发明专利

    公开(公告)号:GB2462356A

    公开(公告)日:2010-02-10

    申请号:GB0913320

    申请日:2009-07-30

    Inventor: SIMPSON SCOTT S

    Abstract: A polymer foam composite is made by forming an article having a first surface 14 and an opposite second surface 16 from a precursor composition, the precursor composition comprising a polymer foam precursor composition 12 and a filler composition comprising a plurality of magnetic, electrically conductive particles 18; foaming the precursor composition to form a plurality of cells 24 in precursor composition; applying a magnetic field to the foamed precursor composition to align the electrically conductive, magnetic particles into mutually isolated chains 20 between the first surface and the opposite second surface of the article; and solidifying the polymer foam precursor composition. The conductive particles may have a high aspect ratio (18, Fig 2). The chains may be oriented at an angle to the surfaces (see columns 34, Fig 3) giving improved compressibility. The ends 22 of the chains may be exposed.

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