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Home › Polyisocyanate prepolymers prepared from rigid polyaromatic precursor materials, and polyurethanes prepared therefrom

Polyisocyanate prepolymers prepared from rigid polyaromatic precursor materials, and polyurethanes prepared therefrom

US Patent 4946872 · Granted Aug 7, 1990

Estimated economic value: $2,737,000 ⓘ

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