NOVEL USES OF UNMODIFIED POLYOLEFINS AND OF GRAFT POLYOLEFINS

摘要

The invention relates to the use of at least one unmodified polyolefin [polyolefin (P1)] as an additive to a polyolefin composition (C2) comprising at least one polyolefin modified by grafting with acid and/or anhydride groups, optionally neutralized in total or in part by at least one neutralizing agent [polyolefin (P2)] for improving the level of at least one mechanical property of the polyolefin composition (C2) to a level improved as much with regard to that of the mechanical property of the polyolefin composition (C2) as with regard to that of the mechanical property of a polyolefin composition (C1) obtained while replacing, weight for weight in the polyolefin composition (C2), all of the modified polyolefin (P2) with unmodified polyolefin (P1). The invention also relates to the use of at least one modified polyolefin by grafting with acid and/or anhydride groups, optionally neutralized in total or in part by at least one neutralizing agent [polyolefin (P2)] serving as an additive to a polyolefin composition (C1) comprising at least one unmodified polyolefin [polyolefin (P1)] for improving the level of at least one mechanical property of the polyolefin composition (C1) to a level improved as much with regard to the mechanical property of the polyolefin composition (C1) as that with regard to the mechanical property of a polyolefin composition (C2) obtained while replacing, weight for weight in the polyolefin composition (C1), all of the unmodified polyolefin (P1) with the modified polyolefin (P2).