C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 49/743 (2006.01) C12C 3/00 (2006.01) C12C 5/02 (2006.01)
Patent
CA 2095661
New stable, concentrated aqueous solutions of tetra- hydro iso-alpha acid (THIA) and hexahydro iso-alpha acid (HHIA) are disclosed. These solutions depend upon the presence of a second kind of iso-alpha acid to increase the solubility of both iso-alpha acids to a point outside of the ranges of their normal solubilities... in the case of THIA and HHIA, to a point above their solubility ranges and, in the case of unreduced iso-alpha acid (UIA) and dihydro iso-alpha acid (DHIA), to a point below their commercial prior-art solubility ranges. This "inversion" of solubility and stability behavior in water, which requires the presence of two different kinds of iso-alpha acids, is new to the art, and provides a novel approach for making commercially- desirable concentrates of THIA and HHIA available to the brewer.
Guzinski James A.
Stegink Larry J.
Kalamazoo Holdings Inc.
Perley-Robertson Hill & Mcdougall Llp
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