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    • 2. 发明授权
    • Spirobislactone acrylate polymers
    • 螺内酯丙烯酸酯聚合物
    • US5260414A
    • 1993-11-09
    • US904096
    • 1992-06-25
    • Allison M. SikesRobert F. Brady, Jr.
    • Allison M. SikesRobert F. Brady, Jr.
    • C08F220/30C08F220/32C08L33/06C08G63/08
    • C08F220/30C08F220/32C08L33/068
    • This invention is directed to a thermoplastic polymer that is solid at room temperature and which expands on further polymerization, to form a crosslinked polymer, and to a process for preparing the polymer and the crosslinked polymer. In a preferred embodiment the polymer is prepared by polymerizing 10-90 but preferably 20-80 mole percent of a lower alkyl acrylic monomer containing a spirobislactone moiety, 10-90 but preferably 20-80 mole percent of a lower alkyl acrylic monomer containing an epoxide moiety, and 0.1-5 but preferably 0.5-1 mole percent of a lower alkyl acrylic monomer containing a functional moiety chosen from primary amino, secondary amino, mercaptan, and hydroxyl groups which can initiate crosslinking with the spirobislactone moiety. The crosslinked polymer is devoid of a spirobislactone carbonyl absorption band and is insoluble in conventional organic solvents.
    • 本发明涉及在室温下为固体并在进一步聚合时膨胀,形成交联聚合物的热塑性聚合物,以及制备聚合物和交联聚合物的方法。 在优选的实施方案中,聚合物通过聚合10-90但优选20-80摩尔%的含有螺双内酯部分的低级烷基丙烯酸单体,10-90但优选20-80摩尔%的含有环氧化物的低级烷基丙烯酸单体 部分,和0.1-5但优选0.5-1摩尔%的含有选自伯氨基,仲氨基,硫醇和羟基的官能部分的低级烷基丙烯酸单体,其可以引发与螺双内酯部分的交联。 交联聚合物不含螺双内酯羰基吸收带,不溶于常规的有机溶剂。
    • 10. 发明授权
    • Bislactone curing agents for epoxy resins and polymers obtained therefrom
    • 用于环氧树脂的双内酯固化剂和由其获得的聚合物
    • US5057590A
    • 1991-10-15
    • US500839
    • 1990-03-29
    • Allison M. SikesRobert F. Brady, Jr.
    • Allison M. SikesRobert F. Brady, Jr.
    • C08G59/62
    • C08G59/625
    • Bislactone curing agents are used to cure and copolymerize with epoxy-basedesins. Preferably, the copolymerization is performed using a tertiary amine catalyst. During cure, the bislactone ring opens and expands. The use of bislactones as curing agents for epoxy-based resins avoids the shrinkage and accompanying stresses which occur when epoxy-based resins are cured conventionally. The novel bislactone cured epoxy-based polymers according the present invention are less prone to failure than are conventional epoxy-based polymers. In a further embodiment, the epoxy is copolymerized with a novel bislactone monomer having at least one trifluoromethyl group. The resulting fluorinated copolymer has a reduced surface energy.
    • 双内酯固化剂用于固化和与环氧基树脂共聚。 优选地,使用叔胺催化剂进行共聚。 在固化期间,双内酯环开放并膨胀。 使用双内酯作为环氧树脂基树脂的固化剂避免了当环氧树脂基常规固化时发生的收缩和伴随的应力。 本发明的新型双内酯固化的环氧基聚合物比常规的环氧基聚合物不容易发生故障。 在另一个实施方案中,环氧基与具有至少一个三氟甲基的新型双内酯单体共聚。 所得氟化共聚物具有降低的表面能。