IP Library Granted Patent US 6,986,852
Granted Patent B2
US 6,986,852 · App. 09/935,988 · Granted Jan 17, 2006

Process for conditioning standing and flowing water systems

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Quick Facts
Patent No.
US 6,986,852
App. No.
09/935,988
Granted
Jan 17, 2006
Kind
B2
Abstract

The invention relates to a novel conditioning agent based on polysuccinimide, its hydrolysates or its partial hydrolysates, for preventing deposits in standing or flowing water systems.

Claims (7)

1. A conditioning agent for conditioning a water component selected from the group consisting of standing water systems and flowing water systems comprising a component in tablet form selected from the group consisting of (1) an active content of a polysuccinimide component selected from the group consisting of polysuccinimide, partial hydrolysates of polysuccinimide, copolymers of polysuccinimide, and mixtures thereof; and (2) a fatty acid.

2. The conditioning agent according to claim 1 , wherein the conditioning agent further comprises a hardness stabilizer selected from the group consisting of inorganic condensed phosphates, organophosphonic acids, phosphate esters, polyphosphoric esters, aminophosphates succinamide, carbohyrates polysaccharides, gluconates, polyglycosides, polyglucosides derivatives, polyoxycarboxylic acids, polyoxycarboxylic copolymers, oxidized carbohydrates, proteins, water-soluble polyamino acids, silicates and zeolites.

3. The conditioning agent according to claim 1 , wherein the conditioning agent further comprises a dispersant component selected from the group consisting of tannin derivatives; lignin sulfonates; sulfonated condensation products of naphthalene with formaldehyde; polyacrylates; polymethacrylates; polyacrylamides; acrylate-based polymers; P-containing polymeric compounds; phosphinic-acid-containing homopolymers and copolymers of acrylic acid and acrylamide; oligomeric phosphinico-succinic acid compounds; sulfomethylated or sulfoethylated polyacrylamides and copolymers and terpolymers with acrylic acid and maleic ester; N-butylacrylamide and copolymers thereof; acrylamidopropionic sulfonic acid as salt and its copolymers; polymers and copolymers of maleic acid or maleic anhydride; phosphinoalkylated acrylamide polymers; copolymers with acrylic acid; and copolymers of alkenes with unsaturated dicarboxylic acids.

4. The conditioning agent according to claim 1 , wherin the conditioning agent further comprises complexing agents selected from the group consisting of iminodisuccinate, nitrilotriacetic acid, citric acid, ethylenediaminetetraacetic acid, ethercarboxylates, oxidized carbohydrates and phosphorus-containing compounds.

5. The conditioning agent according to claim 1 , wherein the agent further comprises additives.

6. The conditioning agent according to claim 5 , wherein the additives are biocides.

7. The conditioning agent according to claim 1 , wherein the polysuccinimide is in a form which the polysuccinimide has an increasing slow-release action.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 1, 2006
From: BAYER AG
To: LANXESS DEUTSCHLAND GMBH
Reel/Frame 018584/0319 →