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US 6,855,402 B2Granted
Weather resistant plastic composites capped with polyethylene terephthalate glycol (PETG) for outdoor exposures
AssigneePolyOne Corporation
InventorsElvira B. Rabinovitch, James W. Summers
Life of this patent
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Abstract
A composite layered plastic article particularly resistant to outdoor exposure to heat, sunlight and UV degradation comprises a top surface exposed layer of PETG fused to a rigid substrate layer selected from PVC, or CPVC, or HIPS, or ABS, or ASA, or PC. The PETG layer is preferably co-extruded with the substrate layer and heat fused together to produce a laminated layered composite article. The composite layered plastic is particularly useful for color retention of dark colors and bright masstone colors, as well as pastel and white colors
Claims14
A weather resistant plastic laminate, comprising:
- a cap surface plastic layer of glycol modified polyethylene terephthalate (PETG);
- and
- a rigid polymeric substrate plastic layer having the cap surface plastic layer fused or adhered to the substrate layer;
- wherein the rigid polymeric substrate plastic layer comprises polyvinyl chloride (PVC) or chlorinated polyvinyl chloride (CPVC) or high impact polystyrene (HIPS) or polyacrylonitrile-butadiene-styrene (ABS) or polyacrylate-styrene-acrylonitrile (ASA) or polycarbonate (PC);
- wherein the rigid polymeric substrate plastic layer has essentially no plasticizer;
- wherein the cap surface plastic layer contains opacifying pigment and contains UV absorber;
- and
- wherein the cap surface plastic layer protects the rigid polymeric substrate plastic layer during exterior usages from sunlight, UV radiation and heat;
- and
- wherein the cap surface plastic layer has thermal expansion and contraction characteristics approximate to thermal expansion and contraction characteristics of the rigid polymeric substrate plastic layer.
7 more elements
Dependencies are inferred from the claim text.