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US 7,547,753 B2Granted
Copolymers for avoiding deposits in water supply systems, production and use thereof
AssigneeAshland Licensing and Intellectual Property LLC
InventorsJoerg Issberner, Rainer Poeschmann, Christian Flocken
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Abstract
The invention relates to copolymers made from monoethylenically unsaturated monomers with acid groups and a further hydrophobic monomer component for the prevention of inorganic and organic deposits in water supply systems. The invention further relates to a method for production of the above.
Claims20
A clear, water-soluble copolymer derived from a monomer composition, comprising:
- a1) a monoethylenically unsaturated, acid-group-containing monomer selected from the group consisting of monocarboxylic acids and dicarboxylic acids;
- a2) a monoethylenically unsaturated sulfonic acid;
- and
- b) a copolymerizable hydrophobic monocyclic terpene hydrocarbon;
- wherein the copolymer is formed by radical copolymerization of components a1), a2) and b) in an aqueous phase and the proportion of component b) in the copolymer ranges from 0.2 to <20 wt %.
2 more elements
A method for synthesis of a clear, water-soluble copolymer of:
- a1) a monoethylenically unsaturated, acid-group-containing monomer selected from the group consisting of monocarboxylic acids and dicarboxylic acids
- a2) a monoethylenically unsaturated sulfonic acid, and
- a copolymerizable hydrophobic monocyclic terpene hydrocarbon, comprising:
- forming the copolymer by radical polymerization of the monomer components in the aqueous phase.
1 more element
A method for preventing organic, inorganic and mixed organic/inorganic deposits in a water-conveying system, comprising:
- applying to the system an effective amount of a clear, water-soluble copolymer of
- a1) a monoethylenically unsaturated, acid-group-containing monomer selected from the group consisting of monocarboxylic acids and dicarboxylic acids;
- a2) a monoethylenically unsaturated sulfonic acid, and
- a copolymerizable hydrophobic monocyclic terpene hydrocarbon,
- wherein the copolymer is formed by radical copolymerization of components a1), a2) and b) in the aqueous phase.
2 more elements
Dependencies are inferred from the claim text.