A new series of cyclic 5-membered dithiocarbonates having urethane tether: Application as an adhesion promoter to epoxy-amine curing system

被引:7
作者
Sudo, Atsushi [1 ]
Motokucho, Suguru [1 ]
Endo, Takeshi [1 ]
机构
[1] Kinki Univ, Mol Engn Inst, Fukuoka 8208555, Japan
关键词
adhesives; crosslinking; heteroatom-containing polymer; thermosets;
D O I
10.1002/pola.22589
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A new series of bifunctional DTC compounds having urethane linkage (DTC-urethanes 1), which can be easily obtained by reaction of DTC-OH with diisocyanate was investigated. Bifunctional DTC-urethanes 1 can be easily synthesized from DTC-OH by the addition reaction of hydroxyl group with diisocyanate. The reaction was effectively promoted by a catalytic amount of dibutyltindilaurate (DBTDL). The resin part comprised of Bis A-DGE and 1 was mixed with PPG-diamine to start the curing reaction. The curable formulation thus prepared was applied as an adhesive to steel-bonding. The formulation was applied between two steel plates and was cured at 50 °C for 24h, and the resulting specimen was subjected to the lap-shear test according to the standard procedure (ASTM D1002). It was observed that the facile synthesis of DTC-urethane based on the highly reliable reaction of DTC-OH with isocyanate gives an opportunity of a wide range of structural design for DTC-carrying molecules.
引用
收藏
页码:2588 / 2592
页数:5
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