Title:
【発明の名称】地熱水の処理方法
Document Type and Number:
Japanese Patent JP2558280
Kind Code:
B2
Abstract:
A flotation collector for treatment of aqueous systems containing inorganic substances, consists of a copolymer contg. 2-95% (molar) (pref. 5-90%) of structural units (I): where R1 is H or Me; Y is O or NH; A is 1-4C alkylene, 2-4C hydroxyalkylene or is an anion; and 5-98% (pref. 10-95%) of structural units (II): where R5 is H or Me; W is 6-8C aryl, -COO(CnH2nO)mR6, -CONHR6, -OR6 or -OCOR6, n is 2-4; m is 0-20; R6 is 1-18C alkyl, 5-8C cycloalkyl, 7-10C aralkyl or 6-18C aryl; and 0-50 (pref. 0-20%) of other structural units. The mean mol. wt. of the copolymer is 1,000-1,000,000 (pref. 2,000-500,000). The copolymer is pref. added to the aqueous system at 1-20000 mg/litre. Pref. in (I) Y is O and A is methylene or ethylene; Z is -NMe2 or -(+)NMe3.X(-). In (II) W is Ph or -COO(CnH2nO)mR6; m is not zero; R is 1-12Calkyl. Most preferably the copolymer is obtained by copolymerisation of ethylene with 1-12C alkyl (meth)acrylate or of styrene with (meth)acrylamide.
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Inventors:
NISHIBAYASHI HIDEYUKI
URANO YOSHIAKI
MATSURA NOBUHIRO
HOZUMI YOSHUKI
WATANABE FUMIO
URANO YOSHIAKI
MATSURA NOBUHIRO
HOZUMI YOSHUKI
WATANABE FUMIO
Application Number:
JP12368287A
Publication Date:
November 27, 1996
Filing Date:
May 22, 1987
Export Citation:
Assignee:
NIPPON CATALYTIC CHEM IND
International Classes:
B03D1/001; B03D1/01; B03D1/016; C02F1/60; C08F20/26; C08F20/34; C08F20/52; C08F212/00; C08F212/04; C08F220/28; C08F220/34; C08F220/60; C08F290/00; C08F290/06; (IPC1-7): B03D1/001; C02F1/60; C08F212/04; C08F220/28; C08F220/34; C08F220/60; C08F290/06
Domestic Patent References:
| JP55162362A | ||||
| JP5855065A | ||||
| JP62289250A |
Attorney, Agent or Firm:
Takehiko Matsumoto