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  1. ¡¶polyurethane catalyst handbook¡· ¨C j.h. saunders & k.c. frisch
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  2. ¡¶organotin compounds in polyurethane catalysis¡· ¨C r. kirchmayr, applied organometallic chemistry, 2005
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  3. ¡¶tertiary amine catalysts for polyurethane foaming reactions¡· ¨C m. szycher, journal of cellular plastics, 2010
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  4. ¡¶development of non-tin catalysts for polyurethane applications¡· ¨C a. pizzi, progress in polymer science, 2018
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  5. ¡¶synergistic effects of metal and amine catalysts in polyurethane foam formation¡· ¨C t. hirose, polymer international, 2021
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