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US 4,786,434 AGranted
Agent for the elimination of active chlorine compounds from water
AssigneeTetra Werke Dr. rer. nat. U. Baensch GmbH
InventorRitter Gunter
Life of this patent
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Abstract
An agent for and the method for its use in the elimination of active chlorine compounds from water comprises a hydroxysulfinate adduct of an aliphatic, aromatic, or heterocyclic mono- or dialdehyde or an ammonia adduct thereof. The agent is used alone or in combination with the corresponding aldehyde.
Claims8
A composition for use in treating water to remove active chlorine compounds selected from
- (a) a mixture comprising
- an adduct of hydrogen sulfoxylate anions to an aliphatic, aromatic, or heterocyclic mono- or dialdehyde according to the equation:
- R--CH.dbd.O+Me.sup.n+ (HSO.sub.2.sup.-).sub.n .fwdarw.Me.sup.n+ (RCH(OH)SO.sub.2.sup.-).sub.n
- wherein Me.sup.+ is hydrogen ion or a mono-, di- or trivalent metal cation, and
- the corresponding amino-, imino-, or nitrilosulfinate formed as a product of said adduct with ammonia;
- (b) a mixture comprising
- said adduct, and
- the corresponding parent aldehyde;
- (c) a mixture comprising
- said adduct, and
- ammonia.
8 more elements
Dependencies are inferred from the claim text.