Method of manufacturing a low melt viscosity polyglycolic acid

    公开(公告)号:JP5362400B2

    公开(公告)日:2013-12-11

    申请号:JP2009064106

    申请日:2009-03-17

    CPC classification number: C08G63/88 C08G63/06

    Abstract: A method for producing a polyglycolic acid having a lowered melt viscosity which comprises: a hot water-immersion step of immersing a high-melt-viscosity polyglycolic acid in a solid form in hot water at 60-100oC and allowing the polyglycolic acid to absorb moisture while maintaining the solid form thereof to give a moisture absorption polyglycolic acid having a water content greater than or equal to 1,000 ppm; and a heat drying step of drying the moisture absorption polyglycolic acid by heating while maintaining the solid form thereof to give a polyglycolic acid having a lowered melt viscosity.

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