US 12,036,769 B2
Ultraviolet protective transparency
Maria Christina Baker, Los Angeles, CA (US); Brent Wright, Valencia, CA (US); Khushroo Lakdawala, Chatsworth, CA (US); Kyle Salisbury, North Hollywood, CA (US); and Fateme Sadat Emami, Canyon Country, CA (US)
Assigned to PPG Industries Ohio, Inc., Cleveland, OH (US)
Appl. No. 16/463,295
Filed by PPG Industries Ohio, Inc., Cleveland, OH (US)
PCT Filed Nov. 20, 2017, PCT No. PCT/US2017/062548
§ 371(c)(1), (2) Date May 22, 2019,
PCT Pub. No. WO2018/098074, PCT Pub. Date May 31, 2018.
Claims priority of provisional application 62/425,976, filed on Nov. 23, 2016.
Prior Publication US 2019/0375198 A1, Dec. 12, 2019
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); B32B 17/10 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/75 (2006.01); C08K 5/3472 (2006.01)
CPC B32B 17/10678 (2013.01) [B32B 17/10036 (2013.01); B32B 17/10651 (2013.01); C08G 18/4236 (2013.01); C08G 18/4858 (2013.01); C08G 18/758 (2013.01); C08K 5/3472 (2013.01); B32B 2571/02 (2013.01); B32B 2605/006 (2013.01); B32B 2605/18 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A transparency comprising:
a first substrate;
an interlayer on the first substrate;
a second substrate on the interlayer;
wherein the interlayer has a thickness of 0.1 to 25 mm, comprises one chosen from glass, polycarbonate, allyl diglycol carbonate, silicone, and combinations thereof, and further comprises an additive such that the transparency blocks greater than 50% of light of a wavelength range of 400 nm to 430 nm as measured by ultraviolet-visible spectroscopy from passing through the transparency;
wherein the transparency has a total visible light transmittance greater than 65% as measured by way of ASTM D1003-07;
wherein the transparency is not electrodimmable;
wherein the transparency blocks at least 90% of light having a wavelength of 380 to 410 nm as measured by ultraviolet-visible spectroscopy from passing through the transparency; and
the transparency further comprises a plastic comprising a reaction product of components comprising an isocyanate and an aliphatic polyol having 4 to 18 carbon atoms and 2 hydroxyl groups, wherein the isocyanate and the aliphatic polyol are independently branched or unbranched, and wherein the additive is included in the transparency by mixing with said isocyanate and said aliphatic polyol.