	US 12,459,241 B2
	Textured interlayers
Vincent J. Yacovone, Springfield, MA (US); and Jun Lu, Greeneville, TN (US)
Assigned to Solutia Inc., St. Louis, MO (US)
Appl. No. 18/550,050
Filed by SOLUTIA INC., St. Louis, MO (US)
PCT Filed Mar. 8, 2022, PCT No. PCT/US2022/019235 § 371(c)(1), (2) Date Sep. 11, 2023, PCT Pub. No. WO2022/192175, PCT Pub. Date Sep. 15, 2022.
Claims priority of provisional application 63/200,525, filed on Mar. 12, 2021.
Prior Publication US 2024/0165923 A1, May 23, 2024
Int. Cl. B32B 17/10 (2006.01)

CPC B32B 17/10587 (2013.01) [B32B 17/10036 (2013.01); B32B 17/10761 (2013.01); B32B 17/10816 (2013.01); B32B 17/10926 (2013.01)]

13 Claims

1. A poly(vinyl acetal) polymeric sheet having at least one textured outer surface, wherein the textured surface is characterized by:

a. an Mr2/Mr1 ratio of 3 to 10, as determined by ISO 13565-2;

b. a surface roughness, Rz, of 20 μm to 60 μm;

c. an Sdr value of greater than equal to 0.05 and less than 0.414, as determined by ISO 25178;

d. an Rsm value of 230 μm to 600 μm; and

e. a surface retention value (Rz2/Rz1) at 100° C. of less than 85%; and wherein the Str value is greater than 0.4 and less than 0.7.