Polycarbonate sheet laminated to plasticized polyvinyl butyral sheet
AssigneeMonsanto Company
InventorsDonald J. David, Thomas F. Sincock
Life of this patent
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Abstract
A laminate comprising a sheet of polycarbonate laminated to another sheet comprising, on a weight basis, a) 30 to 90% polyvinyl butyral and b) 70 to 10% thermoplastic polyurethane, containing a plasticizing amount of one or more C.sub.2 -C.sub.5 alkanediols or diethylene glycol.
Claims8
A laminate comprising a sheet of polycarbonate laminated to another sheet comprising, on a weight basis, a) 30 to 90% polyvinyl butyral and b) 70 to 10% thermoplastic polyurethane, and containing as plasticizer 3 to 15 parts per 100 parts of combined polyvinyl butyral and thermoplastic polyurethane of one or more C.sub.2 -C.sub.5 alkanediols or diethylene glycol.
The laminate of any of clams 1, 2, 3, 4 or 5 wherein said another sheet comprises 30 to 70% polyvinyl butyral and 70 to 30% thermoplastic polyurethane.
Dependencies are inferred from the claim text.