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1. 发明授权

US4477636A Hot-melt adhesive and method 失效
标题翻译：热熔胶及方法
公开(公告)号：US4477636A
公开(公告)日：1984-10-16
申请号：US392699
申请日：1982-06-28
申请人： Soichi Muroi , Shigetoshi Seta , Yoshio Matsumoto , Koichi Yasui , Kazuyoshi Imamura
发明人： Soichi Muroi , Shigetoshi Seta , Yoshio Matsumoto , Koichi Yasui , Kazuyoshi Imamura
IPC分类号： C08G63/00 , C08G63/52 , C08G63/676 , C08G63/682 , C09J167/06 , C09J183/00 , C08L67/02 , C08L67/06
CPC分类号： C08G63/676 , C08G63/52 , C08G63/6828 , C09J167/06
摘要： A hot-melt adhesive comprising a self-curing unsaturated polyester resin having an air-drying functional group and an average polymerization degree of 8 or more has been found to have an excellent heat resistance and a high bonding strength when it is bonding-cured under heat and pressure. If an additive selected from a polymerization initiator, a polymerization promotor and a photosensitizer is incorporated into the present air-drying, self-curing polyester resin, the curing speed is extremely increased to such an extent as cannot be expected from the conventional curing type adhesives. The incorporation of such an additive into the self-curing unsaturated polyester resin is advantageously realized in the form of composite structures of various forms, e.g., a laminate form, a core-in-sheath form and an islands-in-sea form. Such a composite hot-melt adhesive structure is useful for improving a pot life. If a thermoplastic polymer is incorporated, the resulting hot-melt adhesive is further improved with respect to bonding strength. Since the present hot-melt adhesive is solvent-free and does not contain as a cross-linking agent a vinyl monomer, it is easy to handle and environmental pollution can be advantageously avoided.
摘要翻译：已经发现包含具有空气干燥官能团和平均聚合度为8以上的自固化不饱和聚酯树脂的热熔性粘合剂在粘合固化下具有优异的耐热性和高的粘结强度热和压力。如果将选自聚合引发剂，聚合促进剂和光敏剂的添加剂引入到目前的空气干燥，自固化聚酯树脂中，则固化速度极大地增加到常规固化型粘合剂不能预期的程度。将这种添加剂并入自固化不饱和聚酯树脂中有利地以各种形式的复合结构的形式实现，例如层压形式，芯鞘形式和海岛形式。这种复合热熔粘合剂结构对于提高适用期是有用的。如果引入热塑性聚合物，则所得热熔粘合剂相对于粘接强度进一步提高。由于本发明的热熔粘合剂是无溶剂的，不含作为交联剂的乙烯基单体，因此易于处理，可以有效地避免环境污染。

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