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Retroreflective sheeting having an abrasion resistant ceramer coating

  • US 5,677,050 A
  • Filed: 05/19/1995
  • Issued: 10/14/1997
  • Est. Priority Date: 05/19/1995
  • Status: Expired due to Term
First Claim
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1. A coated retroreflective sheet comprising:

  • (i) a retroreflective sheet having a thermoplastic surface; and

    a coating on the thermoplastic surface, the coating being capable of transmitting light when cured and comprising;

    (a) about 20% to about 80% of ethylenically unsaturated monomer;

    (b) about 10% to about 50% of acrylate functionalized colloidal silica; and

    (c) about 5% to about 40% of an amide monomer selected from the group consisting of N,N-disubstituted acrylamide monomer, N-substituted-N-vinyl-amide monomer, and a combination thereof, wherein the amide monomer has a molecular weight between 99 and 500 atomic mass units; and

    wherein the percentages are weight percents of the total weight of the coating.

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