| 摘要 |
MOISTURE CURABLE, PLASTICIZED POLYURETHANE ADHESIVES A moisture curable polyurethane adhesive composition comprises an aromatic polyisocyanate, a polyester polyol, a functionally effective amount of a plasticizer, and an optional polyether polyol. The aromatic polyisocyanate has an isocyanate functionality that does not exceed about 2.3. The polyester polyol may be derived from the reaction of adipic acid and a diol (e.g., neopentyl glycol, diethylene glycol, 2methyl-1,3-propane diol, 2,3-methylbutane diol, or 1,2propylene diol) or it may be provided by a polycaprolactone diol. The adhesive compositions are particularly useful in bonding vinyl to wood.
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