Moisture curable hot melt adhesive

A moisture reactive, hot melt adhesive composition prepared from a mixture comprising an isocyanate;

• a polyol selected from at least one of a linear polyether polyol containing substantially no functional group other than hydroxyl groups, a branched polyether polyol containing substantially no functional group other than hydroxyl groups, a polyoxyalkylene polyol, a homopolymer or a copolymer of a polyoxyalkylene polyol, a polyisobutylene diol, a polyamide polyol and a fatty polyol;
• and a multifunctionally modified polyolefin other than a silyl modified polyolefin.

A moisture reactive, hot melt adhesive composition prepared from a mixture comprising an isocyanate;

• a polyol selected from at least one of a linear polyether containing substantially no functional group other than hydroxyl groups, a branched polyether containing substantially no functional group other than hydroxyl groups, a polyoxyalkylene polyol, a homopolymer or a copolymer of a polyoxyalkylene polyol, a polybutadiene polyol, a polyisobutylene diol, a polyamide polyol and a fatty polyol;
• oxidized polyethylene;
• and optionally a thermoplastic material.

A moisture reactive hot melt adhesive composition having an open time greater than or equal to 30 minutes and comprising a reaction product of a mixture consisting essentially of an isocyanate, a polyol selected from a linear polyether containing substantially no functional group other than hydroxyl groups, a branched polyether containing substantially no functional group other than hydroxyl groups, a polyoxyalkylene polyol, a homopolymer or a copolymer of a polyoxyalkylene polyol, a polyisobutylene diol, a polyamide polyol, a fatty polyol, castor oil, and mixtures thereof, and a multifunctionally modified polyolefin other than a silyl modified polyolefin.