Title:
SCALE INHIBITING COMPOSITION AND METHOD
Document Type and Number:
Japanese Patent JPS60143899
Kind Code:
A
Abstract:
The accumulation of scale in an aqueous system is inhibited by the addition of a copolymer of maleic acid or anhydride or fumaric acid and allyl sulfonic acid and a water soluble organic phosphonic acid such as aminotri(methylene phosphonic acid), ethylenediaminetetra(methylene phosphonic acid), hydroxyethylidene diphosphonic acid and 2-phosphonobutane tricarboxylic acid-1,2,4 or water soluble salts thereof. Scale can actually be removed by the addition of these materials to pressurized boiler water systems. Allyl or vinyl copolymers, a phosphonate, and optionally a water soluble, hardness precipitating agent such as a carbonate or a phosphate may be used when treating pressurized boilers to provide an in-service cleaning effect.
More Like This:
| JP2002143857 | SCALING PREVENTION DEVICE |
| JPH09141016 | WATER PURIFYING DEVICE |
Inventors:
DEIONISHIO GEREERO KUISHIA
CHII MIN FUWA
CHII MIN FUWA
Application Number:
JP25515084A
Publication Date:
July 30, 1985
Filing Date:
December 04, 1984
Export Citation:
Assignee:
DEARBORN CHEMICALS CO
International Classes:
C02F5/00; C02F5/08; C02F5/10; C02F5/12; C02F5/14; (IPC1-7): C02F5/14
Domestic Patent References:
| JPS5712895A | 1982-01-22 | |||
| JPS59162999A | 1984-09-13 |
Attorney, Agent or Firm:
Heikichi Odashima