| US 7,601,790 B2 | ||
| Amphiphilic block copolymer, polymer-containing composition containing the same, and method and apparatus for applying liquid using the polymer-containing composition | ||
| Koichi Sato, Atsugi (Japan); Ryuji Higashi, Atsugi (Japan); Masayuki Ikegami, Atsugi (Japan); Keiichiro Tsubaki, Kawasaki (Japan); Ikuo Nakazawa, Zama (Japan); Sakae Suda, Sagamihara (Japan); Keiko Yamagishi, Ebina (Japan); Takeshi Okada, Zushi (Japan); and Kohei Watanabe, Tokyo (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Appl. No. 10/546,596 PCT Filed Jan. 14, 2005, PCT No. PCT/JP2005/000721 § 371(c)(1), (2), (4) Date Aug. 22, 2005, PCT Pub. No. WO2005/068524, PCT Pub. Date Jul. 28, 2005. |
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| Claims priority of application No. 2004-008497 (JP), filed on Jan. 15, 2004; and application No. 2004-258826 (JP), filed on Sep. 06, 2004. | ||
| Prior Publication US 2006/0128828 A1, Jun. 15, 2006 | ||
| Int. Cl. C08F 12/24 (2006.01); C08F 16/12 (2006.01) | ||
| U.S. Cl. 526—313 [526/333; 526/317.1; 526/346] | 8 Claims |
| 1. An amphiphilic block copolymer having an ionic functional group, wherein a ratio (N10/N5) of a rotational viscosity (N10)
of a 10% by mass solution of the copolymer in purified water to a rotational viscosity (N5) of a 5% by mass solution of the
copolymer in purified water is 2.5 or lower,
wherein the copolymer has a structure in which a hydrophobic block segment, a nonionic hydrophilic segment, and an ionic hydrophilic
segment are arranged in that order, and
wherein a degree of polymerization ratio between the hydrophobic block segment, nonionic hydrophilic segment, and ionic hydrophilic
segment arranged in that order is such that a proportion of a degree of polymerization of the nonionic hydrophilic segment
is 8 or lower and a proportion of a degree of polymerization of the ionic hydrophilic segment is 5 or lower when a proportion
of a degree of polymerization of the hydrophobic block segment is regarded as 10.
|