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Home › Derivatized polyhydroxystyrenes (DPHS) with a novolak type structure and blocked DPHS (BDPHS) and processes for preparing the same

Derivatized polyhydroxystyrenes (DPHS) with a novolak type structure and blocked DPHS (BDPHS) and processes for preparing the same

US Patent 7662538 · Granted Feb 16, 2010

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