Cast molding of acrylic plastics
    1.
    发明公开
    Cast molding of acrylic plastics 失效
    Giessen von Acrylharzen。

    公开(公告)号:EP0209382A2

    公开(公告)日:1987-01-21

    申请号:EP86305493.8

    申请日:1986-07-16

    IPC分类号: B29C39/00 B29C35/02

    摘要: A mixture of polyfunctional (meth)acrylate compound containing a C2-50 alcohol residue (100 parts),0.01-10 parts by wt of a radical initiatior and optionally up to 10 wt % of another radical polymerisable monomer as viscosity controller (e.g. styrene) is poured into a mold (formed by a ring on a glass plate), and polymerised at 10-200°C for not more than 2 hours under heating, light or electron beam irradiation, until the glass transition temperature (Tg) is 10 to 100°C, and the transparent plastics disc formed is removed from the mold without breakage.
    The substrate is then post-cured on a flat surface by heating or UV or electron beam irradiation until its Tg is 150°C, and preferably further post-cured until its Tg is 200°C, to remove residual strain and double bonds.
    A recording layer for an optical or magneto-optical disc is formed on the substrate; a higher post-curing temperature reduces the number of pinholes in the layer.

    摘要翻译: 含有C2-50醇残基(100份)的多官能(甲基)丙烯酸酯化合物的混合物,0.01-10重量份的引发剂和任选的至多10重量%的另一个可自由基聚合的单体作为粘度控制剂(例如苯乙烯) 倒入模具中(由玻璃板上的环形成),并在加热,光或电子束照射下在10-200℃下聚合不超过2小时,直到玻璃化转变温度(Tg)为10〜 100℃,形成的透明塑料盘从模具中除去而不破裂。 然后通过加热或UV或电子束照射将基底在平坦表面上后固化,直到其Tg为150℃,并且优选进一步后固化直到其Tg为200℃,以除去残余应变 和双重债券。 在基板上形成用于光学或磁光盘的记录层; 较高的后固化温度降低了该层中针孔的数量。

    Aromatic poly(thioetheramide-imides)
    3.
    发明公开
    Aromatic poly(thioetheramide-imides) 失效
    芳香族聚(硫代酰胺酰亚胺)。

    公开(公告)号:EP0210036A2

    公开(公告)日:1987-01-28

    申请号:EP86305412.8

    申请日:1986-07-14

    IPC分类号: C08G73/14

    CPC分类号: C08G73/14

    摘要: An aromatic poly(thioetheramide-imide) has a recurring unit of the following general formula (II):
    wherein each -Ar-, which may be the same or different represents a divalent aromatic residue.
    Preparation is by reacting an aromatic diamine H₂N-C₆H₄-S-Ar-S-C₆H₄-NH₂ with trimellitic anhydride or its chloride, preferably in a polar organic solvent in the presence of a HCl trapping agent, followed by dehyd­ration.
    The polymer is moldable optionally with a filler, to form a shaped product, film or fibres of good strength.