Barrier membrane

Details Barrier membrane Barrier membrane

2005-05-09

2010-06-22

Gulakowski, Randy (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

C524S547000, C524S558000, C525S326800, C525S326900, C525S329400, C525S329500, C526S318000, C560S198000, C568S062000

Reexamination Certificate

active

07741427

ABSTRACT:
The present invention relates to a cell-occlusive membrane, obtainable by reaction of at least two precursors in the presence of water. The first precursor A comprises a core and n chains each having a conjugated unsaturated group or a conjugated unsaturated bond, and the second precursor B comprises a core and m chains each having a thiol group, wherein m is greater than or equal to 2, n is greater than or equal to 2, and m+n is greater than or equal 5. The reaction forms a three dimensional network with crosslinking-points. The adjacent crosslinking-points are connected by a chain having less than 600 atoms.

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