C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/10 (2006.01) C08L 23/08 (2006.01) C08L 23/16 (2006.01) C08L 23/20 (2006.01) C08L 53/00 (2006.01) C08L 53/02 (2006.01) C08L 91/00 (2006.01)
Patent
CA 2219052
An olefin thermoplastic elastomer composition which is superior in the resistance to oils, heat resistance, formability and flexibility is provided, said elestomer composition comprising the components (A) 40 - 90 parts by weight of a polypropylene resin having a melt flow rate (determined at 230°C under a load of 2.16 kg according to ASTM D 1238) of 0.1 - 5 g/ 10 minutes, (B) 10 - 60 parts by weight of a copolymer rubber based on olefin, the contents of the components (A) and (B) summing up to 100 parts by weight, and (C) 20 - 150 parts by weight of a softener, wherein the composition is in such a cross-linked state that the gel content thereof amounts to 97 % by weight or higher.
Composition oléfinique élastomère thermoplastique, dont la résistance aux huiles, la résistance thermique, la formabilité et la flexibilité sont supérieures. La composition renferme les constituants suivants : A) 40 à 90 parties en poids d'une résine de polypropylène possédant un taux de fluage (mesuré à 230 degrés C sous une charge de 2,16 kg, selon la norme ASTM D 1238) de 0,1 à 5 g/10 minutes; B) 10 à 60 parties en poids d'un caoutchouc de copolymère, à base d'oléfine, les teneurs des constituants A et B représentant en tout 100 parties en poids; C) 20 à 150 parties en poids d'un émollient. Le niveau de réticulation de la composition correspond à une teneur en gel de 97 % en poids, ou plus.
Itoh Yuichi
Kobayashi Kyoko
Uchiyama Akira
Yamaoka Hiroyasu
Kirby Eades Gale Baker
Mitsui Chemicals Incorporated
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