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    • 1. 发明授权
    • Flame retardant radiation sensitive element
    • 阻燃辐射敏感元件
    • US4278752A
    • 1981-07-14
    • US121438
    • 1980-02-14
    • Joseph E. GervayYvan P. Pilette
    • Joseph E. GervayYvan P. Pilette
    • G03F7/033H05K3/28G03C1/68
    • H05K3/287G03F7/033Y10S430/106
    • A radiation sensitive element comprising a support bearing a layer of photopolymerizable composition which comprises (1) at least one addition polymerizable ethylenically unsaturated compound, (2) an initiator activatable in the ultraviolet to visible region of the spectrum, and (3) at least 20% by weight of a polymeric binder containing at least 5% by weight of acrylonitrile, the composition having present at least 5% by weight halogen based on the total weight of composition covalently bonded to an aromatic moiety of at least one of said components of the composition and/or a conjugated vinyl component. The elements withstand soldering and are flame retardant and are useful as solder masks.
    • 一种辐射敏感元件,其包括带有可光聚合组合物层的载体,其包含(1)至少一种可加聚的烯键式不饱和化合物,(2)可在光谱的紫外至可见光区激活的引发剂,和(3)至少20 重量%的包含至少5重量%丙烯腈的聚合物粘合剂,该组合物基于共价键合到至少一种所述组分的芳族部分的组合物的总重量,存在至少5重量%的卤素 组合物和/或共轭乙烯基组分。 这些元件耐受焊接并且是阻燃的并且可用作焊接掩模。