| abstract |
Compositions useful for adjusting rheological properties are provided. A plurality of hydrophilic segments having a molecular weight greater than 100,000 g / mol, a core having a hydrophobic cross-linked polymer segment, and a branched chain comprising at least two types of branched chains, wherein the first type A composition containing 0.05% by weight or more of a star-shaped polymer including a plurality of hydrophilic segments each having a branched chain extending beyond the second type of branched chain and having a hydrophobic segment at the distal end thereof. [Selection] Figure 1 |