Retroreflective sheeting with improved topcoat

Details Retroreflective sheeting with improved topcoat Retroreflective sheeting with improved topcoat

1994-09-30

1996-05-07

Ahmad, Nasser

Stock material or miscellaneous articles

Sheet including cover or casing

Including elements cooperating to form cells

359536, 359538, 359541, 428 76, 428323, 428325, 428327, 428402, 4284258, 4284259, G02B 512

Patent

active

055144411

ABSTRACT:
Retroreflective sheeting having an aliphatic polyurethane topcoat is described. The aliphatic polyurethane topcoat is obtainable from a mixture comprising (A) an aliphatic polyurethane derived from an aliphatic polyisocyanate and a polyester polyol prepared from a mixture comprising (A-1) a dicarboxylic acid component comprising isophthalic acid as the major dicarboxylic acid; and (A-2) a polyol component; and (B) cellulose acetate butyrate. The mixture also may contain (C) at least one non-reactive solvent, and optionally, (D) one or more surfactants including, for example, hydroxy-containing non-silicone surfactants.

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