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AssigneeNippon Chemical Industrial Co., Ltd.
InventorsYutaka Kinose, Akinori Inoue, Takahiro Nishita, Takahiro Nagayama
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The present invention provides a decolorized red phosphorus composition capable of inhibiting coloring in dark red peculiar to red phosphorus even when kneaded with a resin or the like, modified red phosphorus used for the decolorized red phosphorus composition and a production method therefor, and a flame-retardant polymer composition using the decolorized red phosphorus composition. The modified red phosphorus includes red phosphorus particles (A) whose surfaces are coated with a modified resin film (F) containing white particles (B) having a whiteness of 70 or more, color particles (C) having a hue H of 30 to 80 in the Munsell color-system hue circle, and a binder resin (D). The decolorized red phosphorus composition includes a mixed powder containing the modified red phosphorus and white particles (B) having a whiteness of 70 or more. The flame-retardant polymer composition contains the decolorized red phosphorus composition and a polymer compound (I).
A modified red phosphorus comprising red phosphoruscontaining particles whose surfaces are coated with a modified resin film containing white particles having a whiteness of 70 or more, color particles having a hue H of 30 to 80 in the Munsell color-system hue circle, and a binder resin.
A method for producing modified red phosphorus, said method comprising the steps of:
A decolorized red phosphorus composition comprising a mixed powder containing modified red phosphorus, said modified red phosphorus comprising red phosphorus-containing particles whose surfaces are coated with a modified resin film containing white particles having a whiteness of 65 or more, color particles having a hue H of 30 to 80 in the Munsell color-system hue circle, and a binder resin.
A decolorized red phosphorus composition according toclaim 15, wherein the whiteness is at least 70.
A flame-retardant polymer composition comprising a decolorized red phosphorus composition and a polymer compound (I), said red phosphorus composition comprising a mixed powder containing modified red phosphorus, said modified red phosphorus comprising red phosphorus-containing particles whose surfaces are coated with a modified resin film containing white particles having a whiteness of 65 or more, color particles having a hue H of 30 to 80 in the Munsell color-system hue circle, and a binder resin.
Dependencies are inferred from the claim text.