Water-and-oil repellant composition

Details Water-and-oil repellant composition Water-and-oil repellant composition

C - Chemistry, Metallurgy

09

K

C09K 3/18 (2006.01)

Patent

CA 2502421

A water-and-oil repellant composition with excellent durability which can impart excellent water-and-oil repellency to an article even through a low- temperature treatment. The article to which water-and-oil repellency has been imparted by the composition can give a soft feeling. The water-and-oil repellant composition contains as an essential ingredient a copolymer comprising units derived from the following monomer (a) and units derived from the following monomer (b). Monomer (a): An Rf group-containing monomer giving a homopolymer which has no melting point attributable to fine crystals derived from the Rf groups contained therein or has a melting point of 55~C or lower attributable to the crystals and which has a glass transition temperature of 20~C or higher. Monomer (b): A monomer having no Rf groups and having a crosslinkable functional group.

L'invention concerne une composition oléophobe et hydrophobe de très bonne durée de vie, pouvant conférer des propriétés hydrofuge et oléofuge à un article même par un traitement à basse température. L'article auquel la composition confère ces propriétés peut avoir un toucher doux. La composition oléophobe et hydrophobe contient en tant qu'ingrédient essentiel un copolymère constitué d'unités du monomère (a) et d'unités dérivées du monomère (b). Le monomère (a) est un monomère contenant un groupe R?f¿ donnant un homopolymère ne possédant aucun point de fusion attribuable à de fins cristaux dérivés des groupes R?f¿ contenus dans cet homopolymère, ou bien possède un point de fusion de 55 ·C, ou inférieur, attribuable à ces cristaux et possédant une température de transition vitreuse de 20 ·C ou supérieure. Le monomère (b) est un monomère ne possédant pas de groupe R?f¿, et contenant un groupe fonctionnel réticulable.

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