POLYURETHANE PLASTICIZED COMPOSITION

摘要

A thermoplastic hot melt composition comprising a polyurethane having at least one plasticizer reacted therein formed by heating a reaction system comprising at least one isocyanate having a functionality less than about 2.2, at least one long chain polyol, at least one chain extender and the at least one plasticizer at a temperature of at least about 330 DEG F, wherein said components are present in amounts sufficient to meet the following formula: …$\dots \; wherein\dots \; A\; represents\; the\; equivalent\; weight\; of\; the\; long\; chain\; polyol\; x\; the\; moles\; thereof\; used;\dots \; B\; represents\; the\; equivalent\; weight\; of\; the\; chain\; extender\; x\; the\; moles\; thereof\; used;\dots \; C\; represents\; the\; equivalent\; weight\; of\; the\; isocyanate\; x\; the\; moles\; thereof\; used;\; and\dots \; D\; represents\; the\; grams\; of\; plasticizer.\; A\; process\; for\; forming\; the\; same\; is\; also\; disclosed.$