POLYETHYLENE POWDER AND MOLDED ARTICLE

WIPO Patent Application WO/2022/113794

A1

A polyethylene powder is a polyethylene powder for which the component proportion R and relaxation time T for each component satisfy < condition (1) > and < condition (2) > when the free induction decay curve yielded by the Carr-Purcell-Meiboom-Gill method in pulsed NMR is subjected to three component approximation. < condition (1) > The entanglement index at 180°C given by (formula I) is 12-25 ms. (formula I): (entanglement index) = Tα x Rα/(Rα + Rβ) + Tβ x Rβ/(Rα + Rβ). In the formula I, Tα represents relaxation time for low-mobility component α (ms), Ra represents proportion for low-mobility component α (%), Tβ represents relaxation time for intermediate component β (ms), and Rβ represents proportion for intermediate component β (%). < condition (2) > The intermediate component proportion at 180°C given by (formula II) is 0.25-0.5. (formula II): (intermediate component proportion) = Rβ/(Rα + Rβ)

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OKITSU NAOYA (JP)

PCT/JP2021/041875

June 02, 2022

November 15, 2021

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ASAHI CHEMICAL IND (JP)

C08F10/02; H01M50/409

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WO2021241411A1	2021-12-02

JP2020180234A	2020-11-05
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JP5840743B2	2016-01-06
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JP2019019265A	2019-02-07
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INABA, Yoshiyuki et al. (JP)

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