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| | United States Patent Application: 0020081437 |
 | | Also in more preferred embodiments, the outer topcoat layer of the siding has a thickness of at least 8 microns and comprises a coating selected from the group consisting of polyurethane dispersions, acrylic emulsions, waterborne multi-component urethanes, waterborne multi-component epoxies, UV cured acrylics, visible light cured acrylics, and acrylic waterborne fluoropolymers. |
 | | If the topcoat is too thick the costs of the system will unnecessarily increase or the color of the decorative layer may be compromised (e.g., the product may appear hazy or cloudy). |
 | | A suitable thickness for the topcoat layer is between 5 and 100 microns, preferably between 7 and 50 microns, more preferably between 8 and 30 microns, and most preferably between 10 and 25 microns. |
| appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&co1=AND&d=PG01&s1=20020081437.PGNR.&OS=DN/20020081437&RS=DN/20020081437 (4381 words) |
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