Improved plasticized aqueous coating compositions

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

400/7022

C09D 7/12 (2006.01) C09D 5/02 (2006.01) C09G 1/04 (2006.01) C09G 1/16 (2006.01)

Patent

CA 2294583

This invention provides an aqueous coating composition, more particularly an aqueous floor finish composition, comprising water, at least one polymeric film forming agent, and a plasticizing agent, wherein the improvement comprises at least a portion of the plasticizing agent being at least one tertiary alkyl monocarboxylic acid having an average of from about 6 to 30 carbon atoms per molecule. Such compositions have one or more improved properties such as increased hardness as compared with the same compositions using only conventional plasticizers such as tributoxyethyl phosphate, improved wetting of the substrate by the composition during application, improved coating film leveling, improved multiple coat gloss development, and improved resistance to wear, black heel marking and scuffing.

Cette invention concerne une composition de revêtement aqueuse et plus particulièrement une composition aqueuse de finition pour le sol contenant de l'eau, au moins un agent filmogène polymère et un agent plastifiant, l'amélioration étant liée au fait qu'au moins une partie de l'agent plastifiant est au moins un acide monocarboxylique d'alkyle tertiaire contenant en moyenne entre environ 6 et 30 atomes de carbone par molécule. Ces compositions se caractérisent par le fait qu'elles présentent une ou plusieurs propriétés améliorées telle qu'une dureté renforcée comparée aux compositions similaires dans lesquelles on n'utilise que des plastifiants classiques tel que du tributoxyéthyl-phosphate, un meilleur mouillage du substrat par la composition pendant l'application, un meilleur étalement du film de revêtement, la création d'un brillant plus important pour les diverses couches et une résistance accrue à l'usure, aux traces produites par les talons noirs et aux éraflures.

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