Controlled release of actives for materials used in construction
AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorsJacobus Eversdijk, Karin Tempelaars, Rudolf Hartmut Fischer
Life of this patent
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Abstract
The invention is directed to a construction material and to the use of modified layered inorganic material. The construction material of the invention comprises a layered inorganic material, which layered inorganic material comprises an ionic organic modifier compound and a biocide. The construction material of the invention has increased resistance against microbial fouling.
Claims22
A construction composition comprising a construction material and a biocide molecule release agent, wherein the biocide molecule release agent includes an inorganic material being either a negatively charged clay or a positively charged layered double hydroxide, wherein the inorganic material is modified with one or more ionic organic modifier compounds and wherein said inorganic material is intercalated with a biocide molecule being a fungicide, an algicide or a bactericide, wherein the construction material is cement, plaster, jointing compound, paint, glue, plastics, wallpaper, wood, textiles, straw, or thatch.
A method for controlling the release profile of a specific biocide molecule in a construction material, comprising
- providing an inorganic material being either a negatively charged clay or a positively charged layered double hydroxide;
- adjusting the affinity of the inorganic material to the specific biocide molecule by modifying the inorganic material with one or more ionic organic modifier compounds;
- intercalating the modified inorganic material with the biocide molecule being a fungicide, an algicide or a bactericide;
- and
- including the modified and intercalated inorganic material in the construction material, wherein the construction material is cement, plaster, jointing compound, paint, glue, plastics, wallpaper, wood, textiles, straw, or thatch.
A method for reducing or preventing microbial fouling in a construction material comprising including into the construction material an inorganic material being either a negatively charged clay or a positively charged layered double hydroxide, wherein the inorganic material is modified with one or more ionic organic modifier compounds and wherein said inorganic material is intercalated with a biocide molecule being a bactericide, wherein the construction material is cement, plaster, jointing compound, paint, glue, plastics, wallpaper, wood, textiles, straw, or thatch.
A method for reducing or preventing fungi fouling in a construction material comprising including into the construction material an inorganic material being either a negatively charged clay or a positively charged layered double hydroxide, wherein the inorganic material is modified with one or more ionic organic modifier compounds and wherein said inorganic material is intercalated with a biocide molecule being a fungicide, wherein the construction material is cement, plaster, jointing compound, paint, glue, plastics, wallpaper, wood, textiles, straw, or thatch.
A method for reducing or preventing algae fouling in a construction material comprising including into the construction material an inorganic material being either a negatively charged clay or a positively charged layered double hydroxide, wherein the inorganic material is modified with one or more ionic organic modifier compounds and wherein said inorganic material is intercalated with a biocide molecule being an algicide, wherein the construction material is cement, plaster, jointing compound, paint, glue, plastics, wallpaper, wood, textiles, straw, or thatch.
Dependencies are inferred from the claim text.