Hardening agent composition, method of preparing the same...

Details Hardening agent composition, method of preparing the same... Hardening agent composition, method of preparing the same...

C - Chemistry, Metallurgy

08

L

400/108, 402/261

C08L 63/00 (2006.01) C08G 59/40 (2006.01) C08K 5/54 (2006.01) C09J 163/00 (2006.01)

Patent

CA 2026995

ABSTRACT OF THE DISCLOSURE Disclosed is a hardening agent composition for epoxy resins in the form of powdery grains, comprising a low-reactive hardening agent, a hardening promoter, a zeolite and at least one additive selected from a water- repellent fine silica powder, a silane coupling agent and a polysiloxane compound, whereby the additive is adhered to the surfaces of the powdery grains. The composition has a retarded water-absorbing property and has improved storage stability, when blended with an epoxy resin to form a thermosetting epoxy resin composition. Methods for preparing the powdery hardening agent composition are also disclosed.

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