公开(公告)号：US20130255880A1

公开(公告)日：2013-10-03

申请号：US13990149

申请日：2011-11-17

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Syed Z. Mahdi ,  Yee Y. Wang ,  Arthur F. Cawley

IPC: C09J175/04 ,  C09J5/06

CPC classification number: C09J175/04 ,  C08G18/089 ,  C08G18/10 ,  C08G18/168 ,  C08G18/3206 ,  C08G18/4072 ,  C08G18/4816 ,  C08G18/4841 ,  C08G18/4858 ,  C08G18/632 ,  C08G18/7664 ,  C08G18/797 ,  C09J5/06 ,  C08G18/6511 ,  C08G18/6674

Abstract: A two-part polyurethane adhesive system includes a resin component A and a curative B. The resin component A includes a monomeric polyisocyanate and a prepolymer. The curative B includes a of ether polyol having a molecular weight of from 3000 to 20,000 and another polyol having 4-8 hydroxyl groups and a molecular weight of from 200 to 1000. The system includes a tin (IV) catalyst, which is contained in the resin component, and a blocked aza-type catalyst, which is contained in the curative. The system has excellent shelf stability, gives an excellent open time at ambient temperatures, and cures rapidly when heated to 65° C. or higher.

Abstract translation: 双组分聚氨酯粘合剂体系包括树脂组分A和固化剂B.树脂组分A包括单体多异氰酸酯和预聚物。 固化剂B包括分子量为3000至20,000的醚多元醇和具有4-8个羟基并且分子量为200至1000的另一种多元醇。该体系包括锡（IV）催化剂，其包含在 树脂组分和封闭的氮杂型催化剂。 该系统具有优异的储存稳定性，在环境温度下提供优异的开放时间，并且当加热至65℃或更高时可迅速固化。