Aminoplast/polyurethane wear layer for PVC support surface
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United States of America Patent
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Jul 1, 1997
Issued Date -
N/A
app pub date -
Sep 15, 1994
filing date -
Sep 15, 1989
priority date (Note) -
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Abstract
A resilient surface covering has a wear layer including a crosslinked aminoplast/polyurethane which is directly adhered to a vinyl support surface. The adhesion between the wear layer and support surface is improved by including at least 20% polyurethane by weight based on the total amount of aminoplast, polyurethane and epoxy resin in the wear layer composition, or by applying the wear layer composition to a gelled, but unfused vinyl support surface by fusing the vinyl support surface and curing the wear layer in a single step.
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