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    Prepreg and method for manufacturing molded prepreg article
    1.
    发明授权
    Prepreg and method for manufacturing molded prepreg article 有权

    公开(公告)号：US11865794B2

    公开(公告)日：2024-01-09

    申请号：US16976786

    申请日：2018-03-15

    Applicant: ARISAWA MFG. CO., LTD. ,  Ikumi Uchiyama

    Inventor： Akira Uchiyama ,  Hiroshi Tanaka ,  Masaaki Hirai

    IPC: B29C70/22 ,  C08J5/24 ,  B29K63/00 ,  B29K75/00

    CPC classification number: B29C70/22 ,  C08J5/243 ,  B29K2063/00 ,  B29K2075/00 ,  C08J2371/12 ,  C08J2375/14 ,  C08J2471/12 ,  C08J2475/14

    Abstract: The present invention provides a prepreg that has high impact resistance despite being an all-carbon-fiber FRP (CFRP), the prepreg moreover enabling a molding time to be set to five minutes or less and making it possible to reduce molding costs. This prepreg is obtained by impregnating carbon fiber with a matrix resin comprising a mixture of a thermoplastic resin, a thermosetting resin, and a curing agent, wherein: the thermoplastic resin is a phenoxy resin; the thermosetting resin is a urethane acrylate resin; the thermoplastic resin and the thermosetting resin are compounded in a mass ratio of 15:85-35:65 (thermoplastic resin/thermosetting resin); and the curing agent causes cross-linking to occur due to a radical polymerization reaction, and is formed so as to include first and second peroxides having mutually different initiation temperatures, initiation of the second peroxide starting at a temperature at which termination of the first peroxide occurs.

    Process for producing viscoelastic flexible polyurethane foams
    6.
    发明授权
    Process for producing viscoelastic flexible polyurethane foams 有权
    生产粘弹性柔性聚氨酯泡沫的方法

    公开(公告)号：US09193821B2

    公开(公告)日：2015-11-24

    申请号：US13383238

    申请日：2010-07-14

    Applicant: Heinz-Dieter Lutter ,  Jens Mueller ,  Daniel Freidank ,  Theodore M. Smiecinski ,  Stephan Goettke ,  Berend Eling

    Inventor： Heinz-Dieter Lutter ,  Jens Mueller ,  Daniel Freidank ,  Theodore M. Smiecinski ,  Stephan Goettke ,  Berend Eling

    IPC: C08G18/00 ,  C08G18/63 ,  C08G18/48 ,  C08G18/08 ,  C08G101/00

    CPC classification number: C08G18/632 ,  C08G18/14 ,  C08G18/48 ,  C08G18/4816 ,  C08G18/4845 ,  C08G2101/00 ,  C08G2101/0008 ,  C08J2375/08 ,  C08J2375/14

    Abstract: The invention relates to a process for producing viscoelastic flexible polyurethane foams by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups, c) blowing agents, wherein the compounds having at least two hydrogen atoms which are reactive toward isocyanate groups b) comprise b1) from 0 to 90 parts by weight of at least one polyether alcohol consisting of exclusively propylene oxide units or propylene oxide units and not more than 50% by weight, based on the total weight of the alkylene oxides used, of ethylene oxide units in the polyether chain and having a nominal functionality of from 3 to 8 and a hydroxyl number in the range from 100 to 350 mg KOH/g, and b2) from 10 to 100 parts by weight of at least one graft polyol which can be prepared by in-situ polymerization of olefinically unsaturated monomers in at least one polyether alcohol which has exclusively propylene oxide units or propylene oxide units and not more than 50% by weight, based on the total amount of alkylene oxides used, of ethylene oxide units in the polyether chain, a nominal functionality of from 2 to 8 and a hydroxyl number in the range from 100 to 350 mg KOH/g, having a solids content of not more than 60% by weight, based on the total amount of polyols and solids used, where the sum of the parts by weight of b1) and b2) is 100.

    Abstract translation: 本发明涉及通过使a）多异氰酸酯与b）具有至少两个对异氰酸酯基团具有反应性的氢原子的化合物反应来制备粘弹性柔性聚氨酯泡沫体的方法，c）发泡剂，其中具有至少两个氢原子的化合物是 对于异氰酸酯基团具有反应性b）包括：b1）0至90重量份的至少一种由专门环氧丙烷单元或环氧丙烷单元组成的聚醚醇，且不大于50重量％，基于环氧烷烃的总重量 使用聚醚链中的环氧乙烷单元，其标称官能度为3至8，羟基数为100至350mg KOH / g，和b2）10至100重量份的至少一种 接枝多元醇，其可以通过在至少一种仅具有环氧丙烷单元或环氧丙烷单元的聚醚醇中将烯属不饱和单体原位聚合而不是 大于50重量％，基于所使用的环氧烷烃的总量，聚醚链中的环氧乙烷单元，标称官能度为2至8，羟基数为100至350mg KOH / g， 基于所使用的多元醇和固体的总量，固体含量不超过60重量％，其中b1）和b2）的重量份之和为100。

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