Patent ID: 6620976
Filing Date: 2003-09-16
Classification: C08G,C08L

Abstract:
Polyethylene glycol for use in fields with application to a living body, wherein the sum of the contents of ethylene glycol and diethylene glycol in the polyethylene glycol is less than or equal to that expressed by the following formula [I]: Sum&it;â€ƒ&it;of&it;â€ƒ&it;ethylene&it;â€ƒ&it;glycol&it;â€ƒ&it;and&it;â€ƒ&it;diethylene&it;â€ƒ&it;glycol&it;â€ƒ&it;contents&it;â€ƒ&it;(ppm)=150Ã—2900Ã—0.85(x-150)/44x[I]wherein x represents the average molecular weight of the polyethylene glycol, and the polyethylene glycol has an average molecular weight ranging from 190 to 1,050.