D - Textiles – Paper – 06 – M
Patent
D - Textiles, Paper
06
M
D06M 13/207 (2006.01) D06M 13/224 (2006.01) D06M 15/277 (2006.01) D06M 15/576 (2006.01)
Patent
CA 2560979
The present invention provides an aqueous composition comprising (i) a fluorochemical compound and (ii) an ester derivative of an alpha-hydroxy acid, the ester derivative having a melting point of not more than 35~C and a water solubility of not more than 10% by weight at 25~C. The fluorochemical compound is typically dispersed or emulsified in the aqueous composition. The aqueous compositions may provide such advantages as providing good oil- and/or water repellency properties to a substrate upon application at ambient conditions, without the need for a heat treatment. Thus, the aqueous compositions may be used to provide oil- and/or water repellency properties to a substrate such as for example a fibrous substrate, e.g., leather or textile. In particular, repellency properties comparable to those achieved with a heat treatment step may be achieved.
La présente invention concerne une composition aqueuse contenant (i) un composé fluoré et (ii) un dérivé d'ester d'un acide alpha-hydroxy, ledit dérivé d'ester possédant un point de fusion maximal de 35 ·C et une solubilité aqueuse maximale de 10 % en poids à 25 ·C. Ce composé fluoré est généralement dispersé ou émulsifié dans la composition aqueuse. Lesdites compositions aqueuses peuvent fournir des avantages, tels que de bonnes propriétés hydrofuges et/ou oléofuges, à un substrat, suite à leur application dans des conditions ambiantes, sans avoir recours à un traitement thermique. Ainsi, les compositions aqueuses peuvent être utilisées pour conférer des propriétés hydrofuges et/ou oléofuges à un substrat, tel que, par exemple, un substrat fibreux, de cuir ou de textile. Notamment, peuvent être obtenues des propriétés répulsives comparables à celles obtenues avec une étape de traitement thermique.
Coppens Dirk M.
Moren Dean M.
3m Innovative Properties Company
Smart & Biggar
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