Multi-layer films with syndiotactic barrier layer containing...

Details Multi-layer films with syndiotactic barrier layer containing... Multi-layer films with syndiotactic barrier layer containing...

B - Operations, Transporting

32

B

B32B 27/32 (2006.01) C08L 23/12 (2006.01) C08L 23/06 (2006.01) C08L 91/06 (2006.01)

Patent

CA 2301743

An oriented multilayer film which comprises: (a) at least one layer comprising an olefin polymer such as isotactic polypropylene, and (b) a barrier layer adjacent layer (a) comprising a syndiotactic polypropylene homopolymer and at least 10% of a wax material such as polyethylene wax having a molecular weight in the range of 300-800 and a melting point between 52-72 deg. C.

L'invention porte sur un film multicouche orienté comprenant: (a) au moins une couche constituée d'un polymère oléfinique tel qu'un polypropylène isotactique, et (b) une couche (a) adjacente à la couche barrière et comprenant un homopolymère de polypropylène syndiotactique et au moins 10 % de cire telle que la cire de polyéthylène dont le poids moléculaire est compris entre 300 et 800 et le point de fusion entre 52 et 72 ·C.

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