	US 12,187,842 B2
	Structural bonding adhesive
David Kosal, Romeo, MI (US); Michael Czaplicki, Romeo, MI (US); and Yuan Lu, Romeo, MI (US)
Assigned to Zephyros, Inc., Romeo, MI (US)
Appl. No. 17/287,350
Filed by Zephyros, Inc., Romeo, MI (US)
PCT Filed Oct. 29, 2019, PCT No. PCT/US2019/058552 § 371(c)(1), (2) Date Apr. 21, 2021, PCT Pub. No. WO2020/092360, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/751,786, filed on Oct. 29, 2018.
Prior Publication US 2021/0380755 A1, Dec. 9, 2021
Int. Cl. C09J 163/00 (2006.01); C08G 59/18 (2006.01); C08G 59/24 (2006.01); C08G 85/00 (2006.01); C08K 5/18 (2006.01); C08L 63/00 (2006.01); C08L 21/00 (2006.01); C08L 81/04 (2006.01)

CPC C08G 59/186 (2013.01) [C08G 59/245 (2013.01); C08G 85/004 (2013.01); C08K 5/18 (2013.01); C08G 2170/00 (2013.01); C08L 21/00 (2013.01); C08L 81/04 (2013.01); C08L 2207/53 (2013.01)]

17 Claims

1. A curable material comprising:

i) an epoxy/elastomer adduct;

ii) a polymeric particle dispersed in epoxy and present in an amount of up to 30% by weight of the curable material;

iii) an epoxy/diacid adduct present in an amount of from about 0.05% to about 20% by weight of the curable material;

iv) a silane-modified epoxy;

v) a curing agent;

vi) an amine reaction product which is optionally adducted with epoxy and selected from the group consisting of 1-naphthylamine, 2-naphthylamine, ethanolamine, phenethylamine, oleylamine and a combination thereof; and

vii) a phenoxy resin component;

wherein when cured, the material exhibits a strain to failure of at least 8% as measured in accordance with ISO 527 and a tensile modulus from about 900 MPa to about 1700 MPa in accordance with ASTM D638 Type IV test method.

16. The material of claim 15, wherein the diacid of the epoxy/diacid adduct comprises at least one of a C18 diacid and a C36 diacid.

15. The material of claim 1, wherein the epoxy of the epoxy/diacid adduct comprises bisphenol-F diglycidyl ether (DGEBF) epoxy.