Asymmetric composite membranes and hydrophilicitized microporous sheets of polyolefin used in their preparation

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United States of America Patent

PATENT NO 12083780
APP PUB NO 20210016554A1
SERIAL NO

17060849

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Abstract

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Composite membranes having a film of poly(ethenol) (polyvinyl alcohol; PVA) adhered to a microporous sheet of polyolefin are disclosed. The microporous sheet is made hydrophilic by grafting of the polyolefin, e.g. poly(ethylene), with a preformed polymer before adherence of the film of PVA. The composite membranes are chlorine tolerant with high levels of protein rejection making them particularly suitable for use in the extraction or recovery of water from feed streams in the beverage and food industries, including dairy.

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Patent Owner(s)

Patent OwnerAddress
HYDROXSYS HOLDINGS LIMITED24 BALFOUR ROAD PARNELL AUCKLAND 1052

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gifford, Dylan Townshend Hastings, NZ 4 1
Mills, Sophie Jayne Auckland, NZ 3 1
Pascoe, Gordon Brett North Hamilton, NZ 3 1
Ranaweera, Chathuni Duleesha Auckland, NZ 3 1
Wheelwright, Walt Auckland, NZ 3 1

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