Patent ID: 7550512
Filing Date: 2009-06-23
Classification: A61K,C08G,C08L

Abstract:
1. A copolymer, or a salt thereof, with a molecular weight of 1,000-200,000 comprising structural units represented by the following formulas (I), (II), and (III): where R where X is hydrocarbon group, n is an integer from 2 to 8; p is an integer from 1 to 8; t is an integer 0 or 1; u is an integer 0 or 1; and * may be positioned on the ethylene oxide side or on the opposite side where m is an integer from 2 to 8; p is an integer from 1 to 8; and * may be positioned on the ethylene oxide side or on the opposite side where m is an integer from 2 to 8; r is an integer from 0 to 7; s is an integer from 0 to 7; t is an integer from 0 to 4; R where m is an integer from 2 to 8; r is an integer from 0 to 7; s is an integer from 0 to 7; and * may be positioned on the ethylene oxide side or on the opposite side; R