Fujifilm Manufacturing Europe B.v.

Takeshi Umehara

Yujiro Itami

Hiroyuki Noda

Kimiko Iwahashi

Masatoshi Nakanishi

Akihiro Kurima

Petrus Van Kessel

Shigehide Itoh

Gas separation membranes with intermixed layers

A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.

A composite membrane comprising: a) a porous support; b) a gutter layer, a portion of which is present within the support and a portion of which is outside of the support; and c) a discriminating layer on the gutter layer; wherein: (i) the portion of the gutter layer outside of the support has an average thickness (GL) of 10 nm to 900 nm; and (ii) the portion of the gutter layer present within the support has an average thickness (GL) of 10% to 350% of GL.

Curable compositions and membranes

A process for preparing a composite membrane comprising the steps: a) applying a radiation-curable composition to a porous support; b) irradiating the composition and thereby forming a gutter layer of cured polymer; and c) forming a discriminating layer on the gutter layer; wherein the radiation-curable composition comprises a partially crosslinked, radiation-curable polymer comprising epoxy groups and siloxane groups, a photoinitiator and is substantially free from mono-epoxy compounds. Composite membranes and gas separation cartridges are also claimed.

Process for preparing membranes

Growing community of inventors

Tilburg, Netherlands

Takeshi Umehara