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US 5,856,389 AGranted
Solid thermoplastic surfacing material
AssigneeInternational Paper Company
InventorsWitold Kostrzewski, Leonard Elbon, Robin D. O'Dell, Eric Franzoi
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Abstract
A solid thermoplastic filler-filled surfacing material having a deep semi-translucent appearance, in the form of a thin, rigid sheet contains 19-25% polymethyl methacrylate, 19-25% styrene acrylonitrile copolymer, 5-20% styrene maleic anhydride copolymer, and 30-60% finely divided filler of barium sulfate, kaolin, basic aluminum oxalate and/or wollastonite.
Claims20
A non-transparent thin solid filler-filled thermoplastic decorative surfacing material in rigid sheet form consisting essentially of:
- 16-28% by weight of a clear thermoplastic acrylic polymer;
- 16-28% by weight of a clear thermoplastic impact enhancer polymer;
- and
- 5-20% by weight of a clear compatibilizing thermoplastic polymer;
- and
- an amount sufficient of a filler up to 65% by weight based on the total composition to provide said sheet with a deep semi-translucent appearance.
3 more elements
Dependencies are inferred from the claim text.