STABLE AQUEOUS UNSATURATED QUATERNARY AMMONIUM SALT SOLUTION

Title:

STABLE AQUEOUS UNSATURATED QUATERNARY AMMONIUM SALT SOLUTION

Document Type and Number:

Japanese Patent JP2945356

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To obtain the subject aqueous solution stable at a room temperature and useful for producing a polymer as a flocculant for water treatment, by reacting an N,N-dimethylaminoethyl (meth)acrylate with a quaternarizing agent in the presence of specific metallic ion blocking agent(s).
SOLUTION: This aqueous solution of an unsaturated quaternary ammonium salt of formula II is obtained by reaction of an N,N-dimethylaminoethyl (meth) acrylate of formula I (R1 is H or methyl) with a quaternarizing agent of the formula R-X (R is methyl or benzyl; X is Cl, I, etc.) in the presence of at least one kind of stabilizer such as catechol and at least one kind of metallic ion blocking agent (e.g. diethylenetriaminepentaacetic acid). This aqueous solution contains about 1-100ppm of the metallic ion blocking agent and about 20-1,200ppm of the stabilizer. The salt of formula II accounts for about 50-85wt.% of this aqueous solution.

Inventors:

ARAN RYONDERU
ROBEERU RUGURO

Application Number:

JP19777897A

Publication Date:

September 06, 1999

Filing Date:

July 08, 1997

Export Citation:

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Assignee:

ERUFU ATOKEMU SA

International Classes:

C07C209/90; C07C211/63; C07C219/08; C07C213/10; (IPC1-7): C07C219/08; C07C213/10

Domestic Patent References:

JP57109747A
JP57109749A
JP5295011A

Attorney, Agent or Firm:

Takashi Koshiba

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