公开(公告)号：EP2502953A4

公开(公告)日：2013-08-21

申请号：EP10831581

申请日：2010-11-17

申请人： NITTO DENKO CORP

发明人： NAKAGAWA YOSHIO ,  YAMAMOTO YASUNORI ,  UESUGI MASANORI ,  KAI MAKOTO ,  OOSAWA YUKA

IPC分类号： C08J5/18 ,  C08F2/44 ,  C08F283/00 ,  C08K5/13 ,  C08K5/3435 ,  C08K5/49 ,  C08L33/00 ,  C08L75/04 ,  C09J7/02

CPC分类号： C09J151/08 ,  C08F283/006 ,  C08G18/4854 ,  C08G18/757 ,  C08G18/792 ,  C08G2270/00 ,  C08K5/005 ,  C08K5/34 ,  C08K5/526 ,  C08L75/08 ,  C09J7/25 ,  C09J2201/622 ,  C09J2205/106 ,  C09J2433/006 ,  C09J2475/00 ,  C09J2475/006 ,  Y10T428/28 ,  C08F220/02 ,  C08L33/08

摘要： [MEANS FOR SOLVING] A composite film is one that includes at least a urethane polymer, wherein a ”b* value (value at an acceptance angle of 15 degrees) measured by a spectrocolorimeter after 120 hours in an accelerated weathering test and a ”b* value (value at an acceptance angle of 15 degrees) in an accelerated heat resistance test in a dark place under an atmosphere of 80°C are both 4. 0 or less. The composite film preferably, has a ”b* value (value at an acceptance angle of 15 degrees) in an accelerated moist-heat resistance test in a dark place under an atmosphere of 85°C and 85% relative humidity of 6.0 or less.