Process for producing highly reactive modified phenolic resin
    5.
    发明授权
    Process for producing highly reactive modified phenolic resin 失效
    生产高反应性改性酚醛树脂的方法

    公开(公告)号:US5521259A

    公开(公告)日:1996-05-28

    申请号:US377347

    申请日:1995-01-24

    摘要: A process for producing a highly reactive modified phenolic resin, comprising the steps of polycondensing a petroleum heavy oil or pitch, a formaldehyde polymer and a phenol in the presence of an acid catalyst to thereby prepare a modified phenolic resin; and reacting the resultant modified phenolic resin with a phenol in the presence of an acid catalyst but in the absence of a crosslinking agent such as a formaldehyde polymer to thereby lower the molecular weight of the modified phenolic resin. This highly reactive modified phenolic resin has a low number average molecular weight and a high phenol content, so that its resin melt viscosity is low and that it exhibits a markedly improved reactivity with an epoxy resin. Accordingly, the combination thereof with an epoxy resin provides a molding material suitable for producing a molding which is excellent in not only thermal resistance and moldability but also dimensional stability and other mechanical properties, especially a material for electrical or electronic part and a semiconductor sealer.

    摘要翻译: 一种生产高反应性改性酚醛树脂的方法,包括在酸催化剂存在下使石油重油或沥青,甲醛聚合物和苯酚缩聚的步骤,从而制备改性酚醛树脂; 在酸催化剂的存在下,使所得的改性酚醛树脂与酚反应,但不存在交联剂如甲醛聚合物,从而降低改性酚醛树脂的分子量。 该高反应性改性酚醛树脂具有低的数均分子量和高的苯酚含量,使得其树脂熔体粘度低,并且显示出与环氧树脂显着改善的反应性。 因此,其与环氧树脂的组合提供了适合于制造不仅耐热性和成型性优异的成型材料,而且尺寸稳定性和其它机械性能,特别是电气或电子部件的材料和半导体封口剂的成型材料。

    Process for producing highly reactive low-viscosity modified phenolic
resins
    6.
    发明授权
    Process for producing highly reactive low-viscosity modified phenolic resins 失效
    生产高反应性低粘度改性酚醛树脂的方法

    公开(公告)号:US5936010A

    公开(公告)日:1999-08-10

    申请号:US061324

    申请日:1998-04-17

    摘要: A process for producing a highly reactive low-viscosity modified phenolic resin comprising the steps of polycondensating a petroleum heavy oil or pitch, a formaldehyde polymer, and a phenol in the presence of an acid catalyst to prepare a modified phenolic resin; and reacting the resultant modified phenolic resin with the phenols at a temperature higher than 120.degree. C. and not more than 200.degree. C. in the presence of the acid catalyst to lower the molecular weight of the modified phenolic resin. The highly reactive low-viscosity modified phenolic resin obtained according to this process has high reactivity with epoxy resins and low resin melt viscosity. In addition, this resin can be used for producing a molding material having good moldability and considerably low moisture absorption when combined with an epoxy resin.

    摘要翻译: 一种生产高反应性低粘度改性酚醛树脂的方法,包括在酸催化剂存在下使石油重油或沥青,甲醛聚合物和苯酚缩聚以制备改性酚醛树脂的步骤; 并在酸催化剂存在下,使所得改性酚醛树脂与酚在高于120℃,不超过200℃的温度下反应,以降低改性酚醛树脂的分子量。 根据该方法获得的高反应性低粘度改性酚醛树脂与环氧树脂具有高反应性和低树脂熔体粘度。 此外,该树脂可以用于制造与环氧树脂组合时具有良好成型性和显着低吸湿性的成型材料。

    Fiber-reinforced resin plate and process for producing the same
    8.
    发明授权
    Fiber-reinforced resin plate and process for producing the same 失效
    纤维增强树脂板及其制造方法

    公开(公告)号:US5614600A

    公开(公告)日:1997-03-25

    申请号:US404457

    申请日:1995-03-15

    摘要: A fiber-reinforced resin plate comprising a fibrous base material and a matrix bonding the fibers contained in the fibrous base material, the matrix being formed by curing a resin composition comprising a highly reactive modified phenolic resin (A) prepared by polycondensing a petroleum heavy oil or pitch, a formaldehyde polymer and a phenol in the presence of an acid catalyst to thereby prepare a modified phenolic resin and-reacting the resultant modified phenolic resin with a phenol in the presence of an acid catalyst to thereby lower the molecular weight of the modified phenolic resin, and an epoxy resin (B). Also, a prepreg and a process for producing the fiber-reinforced resin plate. This fiber-reinforced resin plate is excellent not only in adhesion to copper and other metals, heat resistance and electrical insulating properties but also in dimensional stability, strength and other mechanical properties, especially those at heating, because of the formation of the matrix by curing of the above resin composition comprising the highly reactive modified phenolic resin (A) and the epoxy resin (B).

    摘要翻译: 一种纤维增强树脂板,包括纤维基材和将纤维基材中包含的纤维粘合的基体,所述基体通过固化树脂组合物形成,所述树脂组合物包含通过使石油重油缩聚而制备的高反应性改性酚醛树脂(A) 或沥青,甲醛聚合物和苯酚,在酸催化剂存在下制备改性酚醛树脂,并使所得改性酚醛树脂与苯酚在酸催化剂存在下反应,从而降低改性酚醛树脂的分子量 酚醛树脂和环氧树脂(B)。 另外,也可以使用预浸料坯和纤维增强树脂板的制造方法。 该纤维增强树脂板不仅对铜等金属的粘合性,耐热性和电绝缘性也优异,而且在尺寸稳定性,强度等机械性能方面优异,特别是加热时,由于通过固化形成基体 的上述树脂组合物,其包含高反应性改性酚醛树脂(A)和环氧树脂(B)。