Filled polyacetal resin compositions and processes for making the same
    1.
    发明授权
    Filled polyacetal resin compositions and processes for making the same 失效
    填充聚缩醛树脂组合物及其制备方法

    公开(公告)号:US5191011A

    公开(公告)日:1993-03-02

    申请号:US899167

    申请日:1992-06-15

    摘要: Polyacetal compositions are made by melt-blending a polyacetal base resin A, a filler material B, and a thermoplastic acrylic resin C in weight ratios which satisfy the following formulas (1) and (2):(B+C)/(A+B+C)=0.03 to 0.06 (1)C/(B+C)=0.05 to 0.95 (2).The thermoplastic acrylic resin C is most preferably selected from homopolymers of methyl methacrylate or copolymers which are mainly comprised of units derived from methyl methacrylate. The melt-blending of the polyacetal base resin A with the thermoplastic acrylic resin C is accomplished in the presence of a filler material B having a surface tension which is greater than that of the thermoplastic acrylic resin C at the melt-blending temperature. In this manner, a continuous phase of the thermoplastic acrylic resin is formed in a matrix of the polyacetal base resin such that the filler material is encapsulated in the continuous acrylic resin phase.

    摘要翻译: 聚缩醛组合物通过以满足下式(1)和(2)的重量比将聚缩醛基础树脂A,填料B和热塑性丙烯酸树脂C熔融共混而制备:(B + C)/(A + B + C)= 0.03〜0.06(1)C /(B + C)= 0.05〜0.95(2)。 热塑性丙烯酸树脂C最优选选自甲基丙烯酸甲酯的均聚物或主要由衍生自甲基丙烯酸甲酯的单元组成的共聚物。 聚缩醛基础树脂A与热塑性丙烯酸树脂C的熔融共混是在熔融共混温度下在表面张力大于热塑性丙烯酸树脂C的填料B的情况下进行的。 以这种方式,在聚缩醛基础树脂的基体中形成热塑性丙烯酸树脂的连续相,使得填充材料被包封在连续的丙烯酸树脂相中。

    Long fiber-reinforced polyamide resin composition and molded articles
therefrom
    3.
    发明授权
    Long fiber-reinforced polyamide resin composition and molded articles therefrom 失效
    长纤维增强聚酰胺树脂组合物及其模塑制品

    公开(公告)号:US5204396A

    公开(公告)日:1993-04-20

    申请号:US897672

    申请日:1992-06-12

    摘要: Long fiber-reinforced normally solid polyamide resin compositions and molded articles formed thereof include a polyamide base resin, between 5 to 80% by weight of reinforcing fibers having a length of at least 3 mm, and between 0.01 to 3% by weight of a processing aid. The processing aid is a lithium salt of a fatty acid or a metal salt of a fatty acid having 22 to 32 carbon atoms. The compositions are preferably in the form of a generally cylindrical pellet having a length of 3 to 50 mm such that the reinforcing fibers are substantially as long as the pellet in which they are incorporated, and are oriented parallel to one another along the longitudinal axis of the pellet.

    摘要翻译: 长纤维增强的通常固体聚酰胺树脂组合物和由其形成的模塑制品包括聚酰胺基树脂,5至80重量%的长度至少为3mm的增强纤维和0.01至3重量%的加工 援助。 加工助剂是脂肪酸的锂盐或具有22至32个碳原子的脂肪酸的金属盐。 组合物优选为长度为3至50mm的通常为圆柱形的颗粒的形式,使得增强纤维基本上与其中结合的颗粒一样长,并且沿着纵向轴线彼此平行取向 颗粒。