Additive for plastic and plastic

Details Additive for plastic and plastic Additive for plastic and plastic

C - Chemistry, Metallurgy

08

K

C08K 3/18 (2006.01) C08K 3/22 (2006.01) C08K 3/26 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2531070

An additive for a plastic which comprises fine particles prepared by calcining a dolomite exhibiting two endothermic peaks in the differential thermal analysis and then slaking the calcined product, wherein the fine particles comprises calcium carbonate, magnesium carbonate, magnesium oxide, calcium hydroxide and magnesium hydroxide as inherent chemical components and also comprises an ignition loss component in an amount of 10 to 40 wt % relative to the weight of the fine particles; and a plastic which has the additive incorporated therein and has been so converted as to have the capability of capturing hydrogen chloride and the antibacterial activity.

L'invention concerne un additif pour plastique comprenant des particules fines préparées par calcination d'une dolomite présentant deux pics endothermiques dans l'analyse thermique différentielle, puis par désagrégation du produit calciné, ces particules fines comprenant du carbonate de calcium, du carbonate de magnésium, de l'oxyde de magnésium, de l'hydroxyde de calcium et de l'hydroxyde de magnésium comme constituants chimiques inhérents, ainsi qu'un constituant de perte par calcination en quantité comprise entre 10 et 40% en poids par rapport au poids des particules fines. L'invention concerne également un plastique dans lequel cet additif a été incorporé, ce plastique ayant été transformé de sorte à pouvoir capturer le chlorure d'hydrogène et à présenter une activité antibactérienne.

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