Title:
ACRYLATE COPOLYMERS FOR REDUCING SCALE FORMATION
Document Type and Number:
WIPO Patent Application WO/2022/050276
Kind Code:
A1
Abstract:
The present invention relates to the use of copolymers of acrylic acid and C1-C3 alkyl acrylates with an Mw of from 5200 to 20000 g/mol, calculated as its sodium salt, for reducing the formation of inorganic scale in water-bearing systems. The acrylate content in the copolymer is from 3 to 50 mol-%, and at least 50 mol-% of the polymerized C1-C3 alkyl acrylate units are polymerized units of a C2-C3 alkyl acrylate. The invention also relates to a method for reducing the formation of inorganic scale in a water-bearing system comprising adding such a copolymer to the water contained in the water bearing system.
Inventors:
WOLF FLORIAN (DE)
HATER WOLFGANG (DE)
DISCI-ZAYED DUYGU (DE)
LEANEY DEBORAH (DE)
STRATMANN ANIKA (DE)
HATER WOLFGANG (DE)
DISCI-ZAYED DUYGU (DE)
LEANEY DEBORAH (DE)
STRATMANN ANIKA (DE)
Application Number:
PCT/JP2021/031956
Publication Date:
March 10, 2022
Filing Date:
August 31, 2021
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F5/10; C02F103/02; C02F103/08
Foreign References:
| EP0123482A2 | 1984-10-31 | |||
| AU5913765A | 1967-11-23 | |||
| US4839417A | 1989-06-13 | |||
| US4797224A | 1989-01-10 | |||
| US4008164A | 1977-02-15 | |||
| US4517098A | 1985-05-14 | |||
| EP0123482A2 | 1984-10-31 |
Other References:
D.L. GALLUP: "Mineral Scales in Biological and Industrial Systems", 2013, CRC PRESS, pages: 201
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
Download PDF:
Previous Patent: DIFFUSED LIGHT CONTROL SHEET AND DIFFUSED LIGHT IRRADIATION DEVICE
Next Patent: ROTARY ELECTRICAL MACHINE CONTROL SYSTEM
Next Patent: ROTARY ELECTRICAL MACHINE CONTROL SYSTEM