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    • 6. 发明授权
    • Lithographic imaging and printing with printing members having fusible polymeric particles
    • 平版印刷成像和具有可熔融聚合物颗粒的印刷部件的印刷
    • US08652758B2
    • 2014-02-18
    • US12560977
    • 2009-09-16
    • Frederick R. KearneyKevin RayDonald SundbergJohn Tsavalas
    • Frederick R. KearneyKevin RayDonald SundbergJohn Tsavalas
    • G03F7/00G03F7/26B41N1/00B41F7/00
    • B41C1/1025B41C2210/04B41C2210/06B41C2210/24
    • Embodiments of the present invention involve printing members that utilize a particle-fusion imaging mechanism but avoid susceptibility to handling damage. In particular, printing plates in accordance with the invention may utilize two phases, and these may originate, during manufacture, as two particle systems. Both systems are initially dispersed in a single coating applied as a layer, or in multiple coatings applied as adjacent layers, on a substrate. The second particle system exhibits a glass-transition or thermal coalescing temperature well above room temperature and also above the temperature at which the coating is dried. The coalescing temperature of the first particle system is below the drying temperature. As a result, when the coating is dried, the first particle system coalesces and forms a binder that entrains the second particle system, which has not coalesced. The binder formed by the first particle system is preferably insoluble in aqueous liquids, but is swellable or softened by such liquids, whereas the binder formed by the second particle system is preferably insoluble in and not swellable by aqueous liquids. Aqueous insolubility allows the dried (and ready-to-image) coating to resist handling damage, while swellability facilitates development.
    • 本发明的实施例涉及使用粒子 - 融合成像机构的打印构件,但是避免了对处理损伤的敏感性。 特别地,根据本发明的印版可以利用两个阶段,并且这些可以在制造期间作为两个粒子系统产生。 两种体系最初分散在单层涂层中,作为一层施加,或者在作为相邻层施加的多层涂层中分散在基底上。 第二颗粒体系表现出远高于室温的玻璃化转变或热聚结温度,并且还高于涂层干燥的温度。 第一颗粒系统的聚结温度低于干燥温度。 结果,当涂层干燥时,第一颗粒系统聚结并形成夹带未结合的第二颗粒体系的粘合剂。 由第一粒子系统形成的粘合剂优选不溶于水性液体,但是由这种液体可膨胀或软化,而由第二粒子体系形成的粘合剂优选不溶于水性液体并且不能溶胀。 水不溶性允许干燥(和准备成像)涂层抵抗处理损伤,而溶胀性促进了发展。
    • 8. 发明授权
    • Water-borne polyester coatings by miniemulsion polymerization
    • 水性聚酯涂料通过细乳液聚合
    • US06380281B1
    • 2002-04-30
    • US09312327
    • 1999-05-14
    • Jan GoochJohn TsavalasF. Joseph Shork
    • Jan GoochJohn TsavalasF. Joseph Shork
    • C08F216
    • C08F283/01C08F2/24C08F257/02C08F265/04C08F291/00C08L51/003C09D151/003C08L2666/02
    • A distinctive graft copolymer is made by dissolving an unsaturated polyester resin in various vinyl monomers (methyl methacrylate, styrene, etc.). The monomer/unsaturated polyester solution is then miniemulsion polymerized to form a latex consisting of submicron particles of polymer with the polyester grafted onto the polymer backbone. The latex can be applied to a substrate, which on drying forms a polymeric film with good film properties. The latex can be used in a latex paint formulation in place of an acrylate, acetate or styrene-divinyl benzene latex. In this way it is possible to produce water-borne unsaturated polyester coatings which combine the film hardness properties of an unsaturated polyester coating with easy application and cleanup. The coating will beneficially lack organic solvent exposure of typical polyester coatings.
    • 通过将不饱和聚酯树脂溶解在各种乙烯基单体(甲基丙烯酸甲酯,苯乙烯等)中制成独特的接枝共聚物。 然后将单体/不饱和聚酯溶液进行细乳液聚合以形成由聚合物的亚微米颗粒组成的胶乳,聚酯接枝到聚合物主链上。 胶乳可以施加到基材上,其在干燥时形成具有良好膜性质的聚合物膜。 乳胶可以用于乳胶漆制剂中而不是丙烯酸酯,乙酸酯或苯乙烯 - 二乙烯基苯乳胶。 以这种方式,可以生产水性不饱和聚酯涂层,其将不饱和聚酯涂层的膜硬度性质与易于使用和清洁相结合。 该涂层将有益地缺乏典型聚酯涂层的有机溶剂暴露。