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Home › High-viscosity PBT polymerization reactor and method for preparing direct melt-spun high-viscosity PBT/low-viscosity PET two-component elastic fiber

High-viscosity PBT polymerization reactor and method for preparing direct melt-spun high-viscosity PBT/low-viscosity PET two-component elastic fiber

US Patent 12359021 · Granted Jul 15, 2025

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