Coextruded rigid thermoplastic structures for obtaining...

Details Coextruded rigid thermoplastic structures for obtaining... Coextruded rigid thermoplastic structures for obtaining...

B - Operations, Transporting

32

B

18/783

B32B 27/08 (2006.01) B29C 47/06 (2006.01) B32B 27/18 (2006.01) B32B 27/30 (2006.01) C08K 5/00 (2006.01) C08K 5/132 (2006.01) C08K 5/3475 (2006.01)

Patent

CA 1335929

Structures thermoplastiques rigides biorientées à couches polymériques multiples coextrudées comprenant une couche en poly- mère de chlorure de vinyle et une couche de recouvrement en poly- méthylméthacrylate contenant des produits absorbant le rayonnement ultraviolet. La teneur en produits absorbant le rayonnement ultra- violet est telle que la température de transition vitreuse de la couche de recouvrement est au plus égale à 105°C permettant ainsi une orientation dans l'intervalle 95-110°C.

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