C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 175/06 (2006.01) C08G 18/12 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01) C08G 18/76 (2006.01)
Patent
CA 2655855
The invention relates to humidity reactive hot melt adhesive compounds which contain at least one isocynate group exhibiting polyurethane prepolymer, P1, which is liquid at room temperature, as well as at least one linear polyurethane, P2, which is solid at room temperature and which contains polycaprolactone segments, exhibits hydroxyl groups, and exhibits a melting viscosity of 100-300 Pa.s at 170°C. The compounds are particularly characterized by an extended open time.
L'invention concerne des compositions de colles à chaud réactives à l'humidité qui contiennent au moins un prépolymère de polyuréthane P1 présentant des groupes isocyanates liquides à température ambiante et au moins un polyuréthane linéaire P2 solide à température ambiante qui contient des segments de polycaprolactone, présente des groupes hydroxyle et présente une viscosité en fusion de 100 - 300 Pa.s à 170°C. Les compositions se caractérisent particulièrement par un temps de pleine ouverture prolongé.
Gowling Lafleur Henderson Llp
Sika Technology Ag
LandOfFree
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