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US 2004/0029467 A1Published application
Breathable film
AssigneeAtofina
InventorChristophe Lacroix
Life of this patent
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Abstract
A breathable film includes at least one polymer (a) taken from the group comprising an ethylene/alkyl (meth)acrylate copolymer (a1), an optionally neutralized ethylene/ (meth)acrylic acid copolymer (a2), an ethylene/vinyl monomer copolymer (a3), the (a1)/(a2) blend, the (a1)/(a3) blend, the (a2)/(a3) blend and the (a1)/(a2)/(a3) blend, and/or includes at least one functionalized polyethylene (b); and at least one copolymer (c) having copolyamide blocks or polyester blocks and polyether blocks.
Claims21
A breathable film comprising a blend:
- of at least one polymer (a) taken from the group comprising an ethylene/alkyl (meth)acrylate copolymer (a1), an optionally neutralized ethylene/ (meth)acrylic acid copolymer (a2), an ethylene/vinyl monomer copolymer (a3), the (a1)/(a2) blend, the (a1)/(a3) blend, the (a2)/(a3) blend and the (a1)/(a2)/(a3) blend;
- and/or
- of at least one functionalized polyethylene (b);
- and
- of at least one copolymer (c) having copolyamide blocks or polyester blocks and polyether blocks.
2 more elements
Dependencies are inferred from the claim text.