Blends containing an interpolymer of alpha-olefin

C - Chemistry – Metallurgy – 08 – L

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C08L 23/02 (2006.01) C08J 5/18 (2006.01) C08J 9/00 (2006.01) C08L 23/00 (2006.01) C08L 25/00 (2006.01) C09D 123/00 (2006.01) C09D 125/00 (2006.01)

Patent

CA 2264736

Blends of polymeric materials comprising (A) from about 1 to about 99 weight percent of at least one interpolymer containing (1) from about 1 to about 65 mole percent of (a) at least one vinylidene aromatic monomer, or (b) at least one hindered aliphatic vinylidene monomer, or (c) a combination of at least one vinylidene aromatic monomer and at least one hindered aliphatic vinylidene monomer, and (2) from about 35 to about 99 mole percent of at least one aliphatic .alpha.-olefin having from 2 to about 20 carbon atoms; and (B) from about 1 to about 99 weight percent of at least one homopolymer or interpolymer of one or more vinylidene aromatic monomers and/or one or more hindered aliphatic vinylidene monomers. These blends have been observed to possess improved properties when compared to the individual polymers comprising the blend and to provide materials with enhanced processability and temperature ranges of performance.

L'invention porte sur des mélanges de matériaux polymériques comprenant: (A) d'environ 1 à environ 99 % en poids d'au moins un interpolymère contenant (1), d'environ 1 à environ 65 moles % de: (a) au moins un monomère aromatique de vinylidène, ou (b) au moins un monomère aliphatique protégé de vinylidène, ou (c) une combinaison d'au moins un monomère aromatique de vinylidène et d'au moins un monomère aliphatique protégé de vinylidène; et (2) d'environ 35 à environ 99 moles % d'au moins une .alpha.-oléfine aliphatique présentant de 2 à environ 20 atomes de carbone; et (B) d'environ 1 à environ 99 % en poids d'au moins un homopolymère ou interpolymère d'un ou plusieurs monomère aromatique de vinylidène et/ou un ou plusieurs monomères aliphatiques protégés de vinylidène. On a observé que ces mélanges possédaient des propriétés améliorées par comparaison avec les polymères séparés constituant le mélange et constituaient des matériaux plus facile à mettre en oeuvre et supportant de plus grandes variations de température.

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