	US 12,421,366 B2
	Two-component phosphate ester cavity filling semi rigid foam
Michael Czaplicki, Romeo, MI (US); and Kevin Hicks, Romeo, MI (US)
Assigned to Zephyros, Inc., Romeo, MI (US)
Appl. No. 17/289,166
Filed by Zephyros, Inc., Romeo, MI (US)
PCT Filed May 6, 2019, PCT No. PCT/US2019/030831 § 371(c)(1), (2) Date Apr. 27, 2021, PCT Pub. No. WO2020/101732, PCT Pub. Date May 22, 2020.
Claims priority of provisional application 62/767,543, filed on Nov. 15, 2018.
Prior Publication US 2021/0395478 A1, Dec. 23, 2021
Int. Cl. C08J 9/06 (2006.01); C08J 9/00 (2006.01)

CPC C08J 9/0066 (2013.01) [C08J 9/0038 (2013.01); C08J 9/0095 (2013.01); C08J 2363/00 (2013.01)]

18 Claims

1. A method comprising:

providing a two component system, the two component system including an A side and a B side, the A side including epoxy and the B side including phosphate ester and phosphoric acid;

mixing the A side and the B side to form a resulting reaction product;

wherein the resulting reaction product of the A side and the B side cures at a temperature of less than 50° C.;

wherein the A side and the B side include at least 0.25% by weight of a fumed silica component;

wherein the phosphate ester is prepared by reacting a first amount of phosphoric acid and an epoxide functional monomer;

wherein the phosphoric acid includes a second amount of phosphoric acid; and

wherein the second amount of phosphoric acid is added after the preparation of the phosphate ester, and the second amount of phosphoric acid is in addition to the first amount of phosphoric acid.