B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 2/30 (2006.01) C08J 5/18 (2006.01) C08K 9/04 (2006.01) C09C 1/02 (2006.01)
Patent
CA 2408264
The present invention is a method of producing a breathable film including producing an inorganic filler by treating particles of an inorganic particulate material comprising an alkaline earth metal carbonate compound by reaction with a hydrophobizing surface treatment agent comprising one or more aliphatic carboxylic acids having at least chain carbon atoms to produce a hydrophobic coating on the particles including a classification step to result in an inorganic filler having a reduced level of interfering particles. The invention is also breathable polymeric films made using the novel filler.
La présente invention concerne un procédé de production d'un film imper-respirant. Ce procédé consiste à produire une charge inorganique qu'on obtient en traitant des particules d'un matériau particulaire inorganique comprenant un composé de carbonate de métaux alcalino-terreux qu'on fait réagir avec un agent de traitement de surface hydrophobisant comprenant un ou plusieurs acides carboxyliques aliphatiques ayant au moins 10 atomes de carbone dans la chaîne pour former un revêtement hydrophobe sur les particules, ce procédé comportant une étape de classification qui permet de produire une charge inorganique ayant une quantité réduite de particules interférantes. Cette invention concerne également des films polymères imper-respirants réalisés à l'aide de cette nouvelle charge.
Calhoun Allison Anne
Mcdonnell Anthony D.
Miller Charity W.
Mobley Gary R.
Shurling Dickey S.
Goudreau Gage Dubuc
Imerys Pigments Inc.
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