Grease and water resistant article

Details Grease and water resistant article Grease and water resistant article

C - Chemistry, Metallurgy

09

D

C09D 191/06 (2006.01) C09D 129/04 (2006.01) C09D 161/20 (2006.01) C09D 179/02 (2006.01) D06M 13/00 (2006.01) D06M 15/333 (2006.01) D06M 15/61 (2006.01) D21H 17/16 (2006.01) D21H 21/16 (2006.01)

Patent

CA 2624983

A method of improving gas, water, water vapor, and/or grease resistance of a porous material is disclosed which comprises treating the material with a wax, poly(vinyl alcohol), and optionally a polyamine. In some embodiments, an optional first treatment agent may be applied to the material prior to the application of wax and poly(vinyl alcohol) and optionally a polyamine. Materials that have a single coating of wax, poly(vinyl alcohol), and optionally a polyamine, as well as materials having a multi-layer coating that includes a first coating of a first treatment agent and a second coating of wax, poly(vinyl alcohol), and optionally a polyamine are also disclosed.

L~invention concerne un procédé d~amélioration de la résistance aux gaz, à l~eau, à la vapeur d~eau et/ou aux graisses d~un matériau poreux, ledit procédé comprenant le traitement du matériau avec une cire, un alcool polyvinylique et éventuellement une polyamine. Selon certains modes de réalisation, un éventuel premier agent de traitement peut être appliqué au matériau avant l~application de la cire, de l~alcool polyvinylique et éventuellement de la polyamine. L~invention concerne également des matériaux comportant un revêtement unique de cire, d~alcool polyvinylique et éventuellement de polyamine, ainsi que des matériaux comportant un revêtement multicouche comprenant un premier revêtement d~un premier agent de traitement et un second revêtement de cire, d~alcool polyvinylique et éventuellement de polyamine.

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