Retroreflective sheeting having an abrasion resistant ceramer coating
First Claim
Patent Images
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.
1 Assignment
0 Petitions
Accused Products
Abstract
Retroreflective sheeting having an abrasion-resistant ceramer coating that is prepared from about 20% to about 80% ethylenically unsaturated monomers; about 10% to about 50% of acrylate functionalized colloidal silica; and about 5% to about 40% N,N-disubstituted acrylamide or N-substituted-N-vinyl-amide monomer having a molecular weight between 99 and 500 atomic mass units; wherein said percentages are weight percents of the total weight of said coating. A method of coating retroreflective sheeting with an abrasion-resistant cured ceramer layer is also disclosed.
-
Citations
25 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An abrasion-resistant retroreflective sheeting comprising retroreflective sheeting having a thermoplastic surface and having a cured, light transmissive ceramer coating disposed over the thermoplastic surface;
- the cured ceramer coating being capable of demonstrating a percent change in haze that is less than 15 percent when tested in accordance with ASTM-D1003-61 prepared from a mixture comprising about 20% to about 80% of ethylenically unsaturated monomer;
about 10% to about 50% of acrylate functionalized colloidal silica; and
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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
- the cured ceramer coating being capable of demonstrating a percent change in haze that is less than 15 percent when tested in accordance with ASTM-D1003-61 prepared from a mixture comprising about 20% to about 80% of ethylenically unsaturated monomer;
-
21. A method of making an abrasion-resistant retroreflective sheeting comprising the steps of:
-
(a) coating a retroreflective sheet with a ceramer composition, the composition comprising about 20% to about 80% of ethylenically unsaturated monomer;
about 10% to about 50% of acrylate functionalized colloidal silica; and
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 said coating; and(b) curing said precursor composition to form a cured light transmissive ceramer coating on the retroreflective sheet, the cured ceramer coating being capable of demonstrating a percent change in haze that is less than 15 percent when tested in accordance with ASTM-D1003-61. - View Dependent Claims (22, 23, 24, 25)
-
Specification