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PRODUCING DRAWN OR UNDRAWN FLAME-RESISTANT AND ANTI-FUSING CURED PHENOLIC CONTINUOUS FILAMENTS
PRODUCING DRAWN OR UNDRAWN FLAME-RESISTANT AND ANTI-FUSING CURED PHENOLIC CONTINUOUS FILAMENTS
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机译:制作抗拉伸或抗拉伸阻燃聚苯酚连续丝
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摘要
A process for producing a drawn or undrawn flame-resistant and anti-fusing cured phenolic continuous filament which comprises melt-spining an uncured novolak resin which may contain a fiber-forming thermoplastic synthetic resin and then curing the melt-spun filament with a curing agent in the presence of a catalyst; characterized by pre-curing the melt-spun filament with an aldehyde as a curing agent in the presence of an acid catalyst, and then curing the pre-cured filament with an aldehyde in the presence of a basic catalyst.
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