CA2122080C - Methode pour inhiber la croissance des algues sur les bardeaux d'asphalte
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Methode pour inhiber la croissance des algues sur les bardeaux d'asphalte
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Publication number
CA2122080C
CA2122080CCA 2122080CA2122080ACA2122080CCA 2122080 CCA2122080 CCA 2122080CCA 2122080 CA2122080 CA 2122080CA 2122080 ACA2122080 ACA 2122080ACA 2122080 CCA2122080 CCA 2122080C
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CA
Canada
Prior art keywords
granules
algae
copper
resistant
resistant granules
Prior art date
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3M Co
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Minnesota Mining and Manufacturing Co
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Publication date
Priority claimed from US08/075,779external-prioritypatent/US5356664A/en
Application filed by Minnesota Mining and Manufacturing CofiledCriticalMinnesota Mining and Manufacturing Co
Publication of CA2122080A1publicationCriticalpatent/CA2122080A1/fr
Application grantedgrantedCritical
Publication of CA2122080CpublicationCriticalpatent/CA2122080C/fr
Coating compositions for roofing granules, dark colored roofing granules with increased solar heat reflectance, solar heat-reflective shingles and process for producing the same