C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 3/34 (2006.01) C08K 7/00 (2006.01)
Patent
CA 2206645
Compositions having improved gas/vapour barrier qualities are described. The compositions are composed of a substantially non-polar resin and a lamellar filler, the lamellar filler delaminating under high shear, to increase its aspect ratio. Also described are compositions composed of a non-polar thermoplastic resin filled with platelets of talc having an aspect ratio of at least 5; the platelets have an average aspect ratio of between 16-30 and a CIE whiteness index of at least 40.
On décrit des compositions ayant des propriétés améliorées de barrière gas/vapeur. Les compositions sont constituées d'une résine sensiblement non polaire et d'une charge lamellaire, la charge laméllaire subissant une délamination sous cisaillement élevé, ce qui augmente le rapport des côtés. On décrit également des compositions constituées de résine thermoplastique non polaire chargée de plaquettes de talc présentant un rapport des côtés d'au moins 5; les plaquettes ont un rapport des côtés moyen compris entre 16 et 30 et un indice de blancheur CIE d'au moins 40.
Betts Uk Limited
Courtaulds Packaging Limited
Ridout & Maybee Llp
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