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    • 82. 发明授权
    • Hot-melt polyester
    • 热熔聚酯
    • US4363853A
    • 1982-12-14
    • US242226
    • 1981-03-10
    • Kazuyoshi ImamuraNorio AkimotoShozo Awaya
    • Kazuyoshi ImamuraNorio AkimotoShozo Awaya
    • C08G63/00C08G63/12C08G63/181C08G63/46C09D167/02C09J167/00C09J167/02B32B27/36C08G63/16
    • C08G63/181C09D167/02C09J167/02Y10T428/2826Y10T428/2852Y10T428/2891Y10T428/31504Y10T428/31616Y10T428/31681Y10T428/31786Y10T428/4935
    • A polyester comprising acid monomer units of terephthalic acid, succinic acid, glutaric acid and isophthalic acid and/or an aliphatic dicarboxylic acid having 6 to 20 carbon atoms and glycol monomer units of a C.sub.2-10 alkylene glycol in specific proportions has been found to be extremely useful as hot-melt materials such as a hot-melt adhesive, a hot-melt coating material, a hot-melt sealing material and a hot-melt filling material. The present hot-melt polyester has excellent melting characteristics, that is, it can be rapidly molten from a solid state with a high sensitivity to heating to give a molten polyester having a stably low viscosity that does not almost undergo change according to variation of temperature and having an excellent fluidity. Further, the present hot-melt polyester has a good affinity for objects (e.g. adherend) to which the polyester is applied and exhibits excellent bonding or adhesive performance. Moreover, the present hot-melt polyester has improved suppleness and flexibility. The mechanical strength, stretchability and flexibility of the hot-melt adhesive can be much improved while maintaining the melt viscosity thereof at a low level. Thus, there is provided a hot-melt polyester having a well-balanced combination of physical properties that is very important to hot-melt materials.
    • 已经发现包含对苯二甲酸,琥珀酸,戊二酸和间苯二甲酸的酸单体单元和/或具有6至20个碳原子的脂族二羧酸和具有特定比例的C 2-10亚烷基二醇的二醇单体单元的聚酯是 作为热熔性材料如热熔粘合剂,热熔涂层材料,热熔密封材料和热熔填充材料非常有用。 本发明的热熔性聚酯具有优异的熔融特性,即可以从固体状态迅速熔融,对加热具有高灵敏度,得到具有稳定的低粘度的熔融聚酯,其根据温度变化几乎不发生变化 并具有优异的流动性。 此外,本发明的热熔聚酯与涂布聚酯的物体(例如被粘附物)具有良好的亲合性,并且表现出优异的粘结或粘合性能。 此外,本发明的热熔聚酯具有改善的柔软性和柔软性。 在将熔融粘度保持在较低水平的同时,可以大大提高热熔粘合剂的机械强度,伸缩性和柔软性。 因此,提供了一种热熔聚酯,其具有对热熔材料非常重要的物理性能的良好平衡的组合。