C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 8/04 (2006.01) C08C 19/02 (2006.01) C08F 232/06 (2006.01) C09J 109/06 (2006.01) C09J 125/10 (2006.01) C09J 145/00 (2006.01)
Patent
CA 2490340
A hydrogenated copolymer which is a product of hydrogenation of a copolymer having a softening point as measured by the ball-and-ring method of 45 to 55~C and which has a softening point as measured by the ball-and-ring method of 85 to 95~C; and a hot-melt adhesive composition containing the hydrogenated copolymer. The hydrogenated copolymer has a reduced weight loss on heating and has a satisfactory hue after heating. The hot-melt adhesive composition, which contains the hydrogenated copolymer, has excellent flowability during heating, has a reduced weight loss on heating, changes little in hue upon heating, and has excellent thermal stability.
Cette invention concerne un copolymère hydrogéné qui est le produit de l'hydrogénation d'un copolymère présentant un point de ramollissement, mesuré selon la méthode bille et anneau, compris entre 45 et 55 ·C, et qui présente un point de ramollissement, mesuré selon la méthode bille et anneau, compris entre 85 et 95 ·C. Cette invention concerne également une composition d'adhésif thermofusible contenant le copolymère hydrogéné. Ce copolymère hydrogéné perd peu de poids lors du chauffage et présente une teinte satisfaisante après chauffage. La composition d'adhésif thermofusible, qui contient le copolymère hydrogéné, présente une excellente aptitude à l'écoulement pendant le chauffage, perd peu de poids lors du chauffage, subit un léger changement de teinte sous l'effet du chauffage et bénéficie d'une excellente stabilité thermique.
Idemitsu Kosan Co. Ltd.
Smart & Biggar
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