Hydroquinone and mu-amine compositions
AssigneeBetz Laboratories, Inc.
InventorJohn A. Muccitelli
Life of this patent
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Abstract
An improved oxygen scavenger for aqueous mediums is disclosed which comprises hydrazine-free solution of hydroquinone and mu-amine. Representative examples of mu-amines include: aminomethylpropanol, triethylenetetramine, diisopropanolamine, secbutylamine, monoisopropanolamine, ethylenediamine, dimethylaminopropylamine, monoethanolamine, dimethyl(iso)propanolamine, methoxypropylamine, and diethylaminoethanol.
Claims17
A composition which is useful for reducing the amount of oxygen in an oxygen containing aqueous medium, said composition consisting of hydroquinone and mu-amine, said hydroquinone and mu-amine being present in an amount sufficient to increase the oxygen scavenging efficiency of said hydroquinone.
A composition which is useful for reducing the amount of oxygen in an oxygen containing aqueous medium, said composition consisting of water, hydroquinone and mu-amine, said hydroquinone and mu-amine being present in an amount sufficient to increase the oxygen scavenging efficiency of said hydroquinone.
A composition according to claim 14, wherein the total amount of hydroquinone in said solution is about 10% to 20%.
A composition which is useful for reducing the amount of oxygen in an oxygen-containing aqueous medium comprising in combination hydroquinone and mu-amine, said composition being hydrazine free, said composition comprising an aqueous stable solution of hydroquinone and mu-amine, said mu-amine being methoxypropylamine, wherein the total amount of hydroquinone in said solution is about 7% to about 45%, and wherein a ratio of hydroquinone to mu-amine of about 5:1 to 1:10 is provided in said composition.
A composition which is useful for reducing the amount of oxygen in an oxygen-containing aqueous medium comprising in combination hydroquinone and mu-amine, said composition being hydrazine free, said composition comprising an aqueous stable solution of hydroquinone and mu-amine, said mu-amine being methoxypropylamine, wherein the total amount of hydroquinone in said solution is about 7% to about 45%, and wherein a ratio of hydroquinone to mu-amine of about 1:1 is provided in said composition.
Dependencies are inferred from the claim text.