Amorphous polyolefin resin composition

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 23/00 (2006.01) C08G 61/08 (2006.01) C08L 23/02 (2006.01) C08L 23/08 (2006.01) C08L 51/00 (2006.01) C08L 65/00 (2006.01) C08L 51/06 (2006.01)

Patent

CA 2377411

A noncrystalline polyolefin resin composition which has significantly improved impact resistance while retaining intact transparency due to an impact modifier produced from easily available materials by an ordinary polymerization method. The composition contains as the impact modifier a core- shell elastomer obtained by graft-polymerizing in the presence of a conjugated diene copolymer rubber a monomer mixture comprising: an alkyl (meth)acrylate in which the alkyl has 3 to 8 carbon atoms, an alkyl (meth)acrylate in which the alkyl has up to 2 carbon atoms, or a vinyl cyanide compound; and an aromatic vinyl monomer in a specific proportion.

Composition de résine de polyoléfine non cristalline présentant une résistance à l'impact considérablement améliorée, tout en retenant l'intégrité de sa transparence sous l'effet d'un modificateur d'impact fabriqué à partir de matériaux facilement disponibles, au moyen d'un procédé ordinaire de polymérisation. Cette composition contient en tant que modificateur d'impact un élastomère obtenu par polymérisation greffe en présence d'un mélange de monomères conjugué à un caoutchouc de copolymère diène contenant: un méthacrylate d'alkyle dans lequel alkyle possède 3 à 8 atomes de carbone, un méthacrylate d'alkyle dans lequel alkyle possède deux atomes de carbone maximum ou un composé de cyanure de vinyle et un monomère de vinyle aromatique selon une proportion spécifique.

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