	US 12,202,933 B2
	High elastic modulus structural foam materials with improved strain to failure
Michael Czaplicki, Romeo, MI (US); Keith Madaus, Romeo, MI (US); and David Kosal, Romeo, MI (US)
Assigned to Zephyros, Inc., Romeo, MI (US)
Appl. No. 17/263,741
Filed by Zephyros, Inc., Romeo, MI (US)
PCT Filed Aug. 6, 2019, PCT No. PCT/US2019/045285 § 371(c)(1), (2) Date Jan. 27, 2021, PCT Pub. No. WO2020/033393, PCT Pub. Date Feb. 13, 2020.
Claims priority of provisional application 62/714,842, filed on Aug. 6, 2018.
Prior Publication US 2021/0301072 A1, Sep. 30, 2021
Int. Cl. C08G 59/42 (2006.01); B82Y 30/00 (2011.01); C08K 3/013 (2018.01); C08L 63/00 (2006.01)

CPC C08G 59/4253 (2013.01) [C08K 3/013 (2018.01); C08L 63/00 (2013.01); B82Y 30/00 (2013.01); C08K 2201/011 (2013.01); C08L 2203/14 (2013.01); C08L 2205/03 (2013.01); C08L 2207/53 (2013.01)]

19 Claims

1. A material comprising:

i) at least about 10% by weight polyvinyl butyral;

ii) a thermoplastic epoxy, wherein the ratio of polyvinyl butyral to thermoplastic epoxy is 3 to 7 parts polyvinyl butyral to 1 to 2 parts thermoplastic epoxy; and

iii) a polymeric particle component present in an amount of at least 16% by weight of the material;

wherein the material has a strain to failure as measured by ISO 527 of greater than 2% but less than 7% and a tensile modulus of at least 900 MPa as measured by ASTM D638 Type IV test method when cured.