Compositions of interpolymers of alpha-olefin monomers with...

C - Chemistry – Metallurgy – 08 – K

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C08K 3/00 (2006.01) C08J 9/00 (2006.01) C08K 3/08 (2006.01) C08K 7/02 (2006.01) C08L 23/02 (2006.01) C08L 23/04 (2006.01) C08L 23/10 (2006.01) C08L 25/00 (2006.01) C08L 23/08 (2006.01)

Patent

CA 2304674

A blend of polymeric materials comprising: (A) from 1 to 99.99 weight percent based on the combined weights of Components A, B and C of at least one substantially random interpolymer; and wherein said interpolymer: (1) contains from 0.5 to 65 mole percent of polymer units derived from: (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one vinyl or vinylidene aromatic monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer; (2) contains from 35 to 99.5 mole percent of polymer units derived from at least one aliphatic .alpha.-olefin having from 2 to 20 carbon atoms; (3) has a molecular weight (Mn) greater than 1,000; (4) has a melt index (I2) from 0.01 to 1,000; (5) has a molecular weight distribution (Mw/Mn) from 1.5 to 20; and (B) from 99 to 0.01 weight percent based on the combined weights of Components A, B, and C of one or more conductive additives and/or one or more additives with high magnetic permeability; and (C) from 0 to 98.99 weight percent based on the combined weights of Components A, B, and C of one or more polymers other than A.

L'invention concerne un mélange de matières polymères comprenant: (A) 1 à 99,99 % en poids d'au moins un interpolymère sensiblement statistique sur la base des poids combinés des composants A, B et C, cet interpolymère: (1) contenant 0,5 à 65 % en moles d'unités polymères dérivées de: (a) au moins un monomère aromatique de vinyle ou de vinylidène, ou (b) au moins un monomère de vinyle ou de vinylidène aliphatique ou cycloaliphatique inhibé, ou (c) une combinaison d'au moins un monomère aromatique de vinyle ou de vinylidène et d'au moins un monomère de vinyle ou de vinylidène aliphatique ou cycloaliphatique inhibé; (2) contenant 35 à 99,5 % en moles d'unités polymères dérivées d'au moins une .alpha.-oléfine aliphatique possédant 2 à 20 atomes de carbone; (3) possédant un poids moléculaire (Mn) supérieur à 1 000; (4) possédant un indice de fusion (I¿2?) compris entre 0,01 et 1 000; (5) possédant une répartition des poids moléculaires (M¿w?/M¿n?) comprise entre 1,5 et 20; et (B) 99 à 0,01 % en poids d'un ou de plusieurs additifs conducteurs sur la base des poids combinés des composants A, B et C et/ou un ou plusieurs additifs à forte perméabilité magnétique; et (C) 0 à 98,99 % en poids d'un ou de plusieurs polymères autres que A sur la base des poids combinés des composants A, B et C.

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