Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Reexamination Certificate
2008-04-15
2008-04-15
Kiliman, Leszek (Department: 1794)
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
C428S515000, C428S520000, C428S522000
Reexamination Certificate
active
07357988
ABSTRACT:
The present invention relates to multilayer composites which show special visual effects while maintaining other beneficial properties such as melt strength and impact strength. In one embodiment the present invention relates to a multilayer composite comprising, in sequence, (i) optionally, an outer layer comprising an acrylic resin which is substantially transparent to visible light, (ii) a second layer comprising a first rubber modified thermoplastic resin which is substantially transparent to visible light, and at least one additive to provide a special visual effect; (iii) a third layer comprising a light-blocking layer; (iv) a fourth layer comprising a second rubber modified thermoplastic resin different from said first rubber modified thermoplastic resin; (v) optionally, a fifth layer comprising a tielayer; and (vi) optionally, a substrate layer. In other embodiments the present invention relates to articles made from the composite.
REFERENCES:
patent: 6589378 (2003-07-01), Grefenstein et al.
patent: 7135233 (2006-11-01), Gaggar et al.
General Electric Company
Kiliman Leszek
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