US 12,460,061 B2
Expandable material with improved thermal insulation properties and use thereof
Dusko Paripovic, Zürich (CH); Christian Hardt, Kelsterbach (DE); Jan Spengler, Breuberg (DE); Jean Georges Becker, Worms (DE); and Achim Kohl, Laumersheim (DE)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 18/026,369
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Nov. 8, 2021, PCT No. PCT/EP2021/080885
§ 371(c)(1), (2) Date Mar. 15, 2023,
PCT Pub. No. WO2022/101118, PCT Pub. Date May 19, 2022.
Claims priority of application No. 20207045 (EP), filed on Nov. 11, 2020.
Prior Publication US 2024/0018327 A1, Jan. 18, 2024
Int. Cl. C08J 9/32 (2006.01); A47L 15/42 (2006.01); B32B 5/18 (2006.01); B32B 5/20 (2006.01); B32B 27/06 (2006.01); B32B 27/20 (2006.01); B32B 27/22 (2006.01); B60R 13/08 (2006.01); B62D 25/06 (2006.01); C08J 9/00 (2006.01)
CPC C08J 9/32 (2013.01) [A47L 15/4209 (2016.11); B32B 5/18 (2013.01); B32B 5/20 (2013.01); B32B 27/065 (2013.01); B32B 27/20 (2013.01); B32B 27/22 (2013.01); B60R 13/0815 (2013.01); C08J 9/0061 (2013.01); C08J 9/0066 (2013.01); B32B 2307/102 (2013.01); B32B 2307/304 (2013.01); B32B 2307/72 (2013.01); B32B 2509/00 (2013.01); B32B 2605/00 (2013.01); B62D 25/06 (2013.01); C08J 2203/04 (2013.01); C08J 2203/184 (2013.01); C08J 2203/22 (2013.01); C08J 2323/08 (2013.01); C08J 2423/08 (2013.01); C08J 2497/02 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A thermally expandable composition comprising:
a1) at least one polymer P,
a2) at least one chemical blowing agent CBA,
a3) at least one physical blowing agent PBA, and
a4) at least one filler F,
wherein the at least one physical blowing agent PBA is composed of expandable microspheres, and
wherein the thermally expandable composition is essentially free of epoxy resins having an average of more than one epoxy group per molecule.