Hydrophilic foams by frothing.

Title:  PRODUCTION OF POLYURETHANE FOAMS

Number:  US2012232006

 Publication date:  13-9-2012

Applicant/Assignee: Bayer M.S.

Gist: Hydrophilic foam by frothing of PU dispersion.

Why it is innovative:  Bayer has many patents on hydrophilic PU foams for wound dressings, but this one is different because the foam is produced by frothing. For conventional hydrophilic foam ‘hydrophilized’ prepolymers are used which are then reacted with water, in this case a dispersion of an ionomeric PU (containing sulphonate groups) is used which is frothed and crosslinked.  Similar -I believe-to the famous PORON(TM) foams by Rogers corp.

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