B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 71/56 (2006.01)
Patent
CA 2180537
A method for the production of a hydrolytically stable nylon membrane includes providing a nylon having at least about 0.9 mole of amino end groups per mole of nylon and preparing the nylon membrane therefrom. The membrane can be used in cartridges for use in filtration applications as may be necessary in the food and beverage industry as well as for the production of pharmaceuticals and the manufacture of electronic components. The membrane is capable of withstanding autoclaving and hot water sanitization without molecular dissociation regardless of its pore size, or thickness of the membrane, or the nylon solids content of the dope or, the temperature at which the dope is made.
La présente invention concerne un procédé de production d'une membrane de nylon stable à l'hydrolyse. Le procédé consiste à produire un nylon comportant au moins 0,9 moles de groupes à terminaisons aminées par mole de nylon et à préparer une membrane de nylon à partir de cette substance. La membrane convient particulièrement aux cartouches filtrantes du type utilisé dans les industries alimentaires ou limonadières, mais également pour la production de produits pharmaceutiques et la fabrication de composants électroniques. La membrane supporte normalement le passage à l'autoclave et la désinfection à l'eau chaude, sans dissociation moléculaire en ce qui concerne la taille de ses pores, l'épaisseur de membrane, la teneur en particules de nylon solide de dopage, ni la température à laquelle s'effectue le dopage.
Badenhop C. Thomas
Disbrow James C.
Hou Kenneth C.
Repetti Ronald V.
Cuno Incorporated
Ogilvy Renault
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