Aramid particles containing peroxide radical initiator

Details Aramid particles containing peroxide radical initiator Aramid particles containing peroxide radical initiator

C - Chemistry, Metallurgy

08

L

C08L 77/10 (2006.01) B60C 1/00 (2006.01) C08J 5/06 (2006.01) C08K 5/14 (2006.01) C08L 7/00 (2006.01) C08L 9/00 (2006.01) D06M 13/10 (2006.01)

Patent

CA 2705115

The invention pertains to an aramid particle containing a peroxide radical initiator wherein the particle contains 3-40 wt% peroxide radical initiator based on the weight of the aramid particle. The invention also relates to a particle-elastomer composition comprising: (a) 100 parts by weight of at least one natural or synthetic elastomer, particularly rubber; (b1) 0.1 to 25 parts by weight of sulfur, an amount of a sulfur donor providing the equivalent of 0.1 to 25 parts by weight of sulfur, or a mixture of sulfur and a sulfur donor to an equivalent total of 0.1 to 25 parts by weight of sulfur; or (b2) 0.1 to 20 parts by weight, preferably 1 -15 parts by weight of a peroxide; and (c) 0.1 to 20 parts by weight, preferably 0.5-10 parts by weight of the aramid particle.

L'invention porte sur des particules d'aramide contenant un amorceur de radicaux de type peroxyde, les particules contenant 3-40 % en poids d'un amorceur de radicaux de type peroxyde sur la base du poids des particules d'aramide. L'invention porte également sur une composition particule-élastomère comprenant : (a) 100 parties en poids d'au moins un élastomère naturel ou synthétique, en particulier du caoutchouc; (b1) 0,1 à 25 parties en poids de soufre, une quantité d'un donneur de soufre fournissant l'équivalent de 0,1 à 25 parties en poids de soufre ou un mélange de soufre et d'un donneur de soufre à un total équivalent de 0,1 à 25 parties en poids de soufre; ou (b2) 0,1 à 20 parties en poids, de préférence 1-15 parties en poids d'un peroxyde; et (c) 0,1 à 20 parties en poids, de préférence 0,5-10 parties en poids des particules d'aramide.

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