Rapid curing aqueous coating agents
AssigneeClariant GmbH
InventorsRolf Kuropka, Thomas Fichtner
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Abstract
The invention relates to rapid-curing aqueous coating agents, containing at least one binding agent and at least one water-soluble, quaternary poly(allylamine). Said agents have rapid curing properties and do not discolor during the curing process. Poly(diallyl dialkyl ammonium chlorides) are particularly suitable for use as the water-soluble quaternary poly(allylamine). The inventive coating agents are suitable for use as dyes, rendering agents, primers and wood paints for external applications.
Claims13
A rapid drying aqueous render, paint, primer or wood coating material comprising
- A) a binder comprising an aqueous polymer or a copolymer containing, based on the total amount of the monomers,
- a) from 70 to 99.7% by weight of at least one free-radically polymerizable olefinically unsaturated compound selected from the group consisting of acrylates and methacrylates of (C1–C12) monoalcohols, vinylaromatic monomers, vinyl esters of (C1 to C12) alkanemonocarboxylic acids, vinyl halides, α,β-monoolefinically unsaturated nitrites and alkyl esters of monoolefinically unsaturated dicarboxylic acids,
- b) from 0.5 to 10% by weight of at least one compound selected from the group of α,β-monoolefinically unsaturated monocarboxylic and dicarboxylic acids and/or their amides or N-substituted amides, and
- c) up to 20% by weight of compounds selected from the group of hydroxyl-containing monomers, acetylacetoxy-containing monomers, monomers containing epoxide groups, monomers containing silane groups, nitrogen-containing monomers selected from the group consisting of polymerizable monomers containing an amino, ureido or N-heterocyclic group and/or monomers containing keto groups
- B) at least one water-soluble quaternary poly(allylamine) and C) up to 10% by weight, based on the binder, of at least one nonionic emulsifier.
A process for preparing a rapid drying render, paint, primer or wood coating material for exterior application composition comprising the step of preparing a mixture comprising an aqueous copolymer containing, based on the total amount of the monomers,
- a) form 70 to 99.7% by weight of at least one free-radically polymerizable olefinically unsaturated compound selected from the group consisting of acrylates and methacrylates of C1–C12 alcohols, vinylaromatic monomers, vinyl esters of C1–C12 alkanemonocarboxylic acids vinyl halides α, β-monoolefinically unsaturated nitriles and/or alkyl esters of monoolefinically unsaturated dicarboxylic acids,
- b) from 0.5 to 10% by weight of at least one compound selected from the group of α, β-monoolefinically unsaturated monocarboxylic and dicarboxylic acids and/or their amides or N-substituted amides, and
- c) up to 20% by weight of compounds selected from the group of hydroxyl-containing monomers, acetylacetoxy-containing monomers, monomers containing epoxide groups, monomers containing silane groups, nitrogen-containing monomers selected from the group consisting of polymerizable monomers containing an amino, ureido or N-heterocyclic group and/or monomers containing keto groups,
- B) at least one water-soluble quaternary poly(allylamine), and
- C) up to 10% by weight based on the binder of at least one nonionic emulsifier.
Dependencies are inferred from the claim text.