Stabilized biocidal coating composition and method

C - Chemistry – Metallurgy – 08 – K

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Details

C08K 3/22 (2006.01) C09D 1/12 (2006.01) C09D 5/14 (2006.01)

Patent

CA 2445980

A biocidal film-forming composition, preferably a paint, is disclosed, comprising hydrated lime, alkaline potassium salt, and a non-ionic polyolefinic latex resistant to hydrated-lime induced coagulation and phase separation. Also disclosed is the method of making certain such composition wherein hydrated lime is admixed with a non-ionic polyolefinic ester latex with agitation and continuing such agitation until hydrolysis of the ester is substantially completed and rheology of the composition is stabilized and the incidence of gelation is eliminated.

La présente invention concerne une composition filmogène biocide, de préférence une peinture, comprenant de la chaux hydratée, du sel de potassium alcalin, et un latex polyoléfinique non ionique résistant à la coagulation et à la séparation de phases induites par la chaux hydratée. La présente invention concerne également le procédé de préparation de certaines de ces compositions dans lesquelles la chaux hydratée est mélangée à du latex ester polyoléfinique non ionique avec agitation et en continuant ladite agitation jusqu'à ce que l'hydrolyse de l'ester soit sensiblement achevée et la rhéologie de la composition soit stabilisée et l'incidence de la gélification soit éliminée.

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