【発明の名称】水溶性ブロツク共重合体、その製造法および用途

Japanese Patent JPH0794550

B2

PURPOSE:To obtain a block copolymer having excellent surface activity and a large solubility in water, by completely conducting a first-stage cationic ring- opening polymerization of a specified 2-oxazoline compund and conducting a second-state cationic ring-opening polymerization of another specified 2-oxazoline compound in the same reaction system in a specified manner. CONSTITUTION:A first-stage cationic ring-opening polymerization of a 2-oxazoline compound of formula I (wherein R2 is H, methyl, or ethyl) or a 2-oxazoline compound of formula II (wherein R3 is a 4 or 5C alkyl) is completely conducted. When the first-stage polymerization involves a compound of formula I, a second-stage cationic ring-opening polymerization involves a compound of formula II. When the first-stage polymerization involves a compound of formula II, the second-stage polymerization involves a compound of formula I. In this way, a water-soluble block copolymer, MW of 500-50,000, represented by formula III or IV (wherein R1 is H or the like, R2 is H or the like, R3 is a 4-5C aralkyl, m and n are each a degree of polymerization of each block, m>=2, n>=2, m/n is 0.5-100, and X is a terminal group) can be obtained.

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WO/1988/008435	PROCESS FOR PREPARING AROMATIC AMINE POLYMER

Takeo Saegusa
Kobayashi Shiro
Toshiro Igarashi

JP8559584A

October 11, 1995

April 26, 1984

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Sumitomo Chemical Co., Ltd.
Takeo Saegusa

C08G73/00; C08G73/02; C09K23/52; (IPC1-7): C08G73/02; B01F17/52

JP55120627A
JP57415B2

【文献】米国特許3574784(US,A)
【文献】AdvancesinChemistrySeries142Copolymers,Polyblends,andComposites(1975年AMERICANCHEMICALSOCIETY発行)

Mitsuhiro Moroishi (1 person outside)

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