Stabilizer in solid form for organic polymers

Details Stabilizer in solid form for organic polymers Stabilizer in solid form for organic polymers

C - Chemistry, Metallurgy

08

K

C08K 9/12 (2006.01) C08J 3/22 (2006.01) C08K 5/15 (2006.01) C08K 5/1545 (2006.01) C08K 5/544 (2006.01)

Patent

CA 2226552

Solid form of a stabilizer for organic polymers consisting of one or more tocopherols, as such or in formulation, absorbed on porous polypropylene with a high crystallinity, in a quantity ranging from 30% to 85% by weight. The above tocopherols, as such or in formulation, can also be used in a mixture with other stabilizers such as, for example, secondary antioxidants containing phosphorous or sulfur, sterically hindered phenols and sterically hindered amines.

Stabilisant sous forme solide pour polymères organiques constitué d'un ou de plusieurs tocophérols, tels quels ou en formulation, absorbé sur du polypropylène poreux de cristallinité élevée, dans une quantité variant de 30 % à 85 % en poids. Les tocophérols susmentionnés, tels quels ou en formulation, peuvent également être utilisés dans un mélange avec d'autres stabilisants comme, par exemple, des antioxydants secondaires contenant du phosphore ou du soufre, des phénols stériquement encombrés et des amines stériquement encombrées.

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