| 摘要 |
A latent hot-melt adhesive containing (A) surface-deactivated polyisocyanate, (B) isocyanate-reactive polymer and (C) additives, in which hydrophobicity is adjusted by the combination of (B) and (C) so that the adhesive gives a non-porous cured bead after storage for at least 120 hours under normal conditions. A hot melt adhesive with good storage stability and latent reactivity, containing (A) solid, surface-deactivated polyisocyanate(s), (B) polymer(s) which are able to react with isocyanate (NCO) groups and (C) additive(s), in which the hydrophobicity of the adhesive is adjusted by the qualititative and quantitative combination of (B) and (C) in such a way that an essentially uncrosslinked layer of adhesive applied to a substrate gives an essentially non-porous cured joint after storage for at least 120 hours under normal conditions. Independent claims are also included for (a) a hot-melt adhesive as above in which component (B) comprises linear and/or partly branched, unsaturated, partly saturated and/or saturated hydrocarbon polymers; (b) a process for bonding a modular component with another substrate with this adhesive; (c) a modular component bonded to substrate(s) with this adhesive, in which the hardened adhesive/substrate and adhesive/component interfacial layers are essentially non-porous. |
