HHPA - What does HHPA stand for? The Free Dictionary
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6) D400 453 600 Hexahydrophthalic anhydride HHPA
154 450 Table 2.
A comparison of the hydrolytic velocity of the HHPA
The two-phase precipitated formulations were prepared by first producing the epoxy-extended prepolymer, which was then mixed with the equivalent of approximately 80 phr HHPA
and 1 phr BDMA.
DDSA (dodecenyl succinic anhydride) is offered for producing tougher, more flexible cured polymers; Succinic anhydride (SAA) is recommended for applications where a dibasic acid anhydride is desired; and HHPA
(hexahydrophthalic anhydride) hardener is also recommended for curing epoxies.