Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Reexamination Certificate
2007-05-29
2007-05-29
Mullis, Jeffrey (Department: 1711)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
C252S088100, C252S062200, C252S062200
Reexamination Certificate
active
11034084
ABSTRACT:
A thermoplastic sheet that includes a continuous phase and a dispersed phase, whereA) the continuous phase contains a polymer composition resulting from the polymerization of a monomer mixture containing a styrenic monomer and an alkyl (meth)acrylate monomer in the presence of the dispersed phase; andB) the dispersed phase contains one or more block copolymer selected from diblock and triblock copolymers of styrene-butadiene, styrene-butadiene-styrene, styrene-isoprene, styrene-isoprene-styrene, partially hydrogenated styrene-isoprene-styrene. The thermoplastic sheet is formed by extruding a thermoplastic composition that is cut to desired dimensions to form thermoplastic items, e.g. identification cards, credit cards, bank cards, key cards, gift cards, phone cards, playing cards, menus, and the like. Indicia and/or printing can be applied to the items to provide for commercial applications. The sheet may be opaque or may be relatively clear to transparent with a Haze value of 0.01% up to 10%.
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Delaney, Jr. Richard
Desmarais Michael W.
Desmarais Richard W.
Kwok John Chi Hee
Matz Gary F.
Mullis Jeffrey
NOVA Chemicals Inc.
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