Title:
【発明の名称】イオン交換樹脂の製造法
Document Type and Number:
Japanese Patent JPH068328
Kind Code:
B2
Abstract:
The invention relates to a process for the manufacture of ion exchange resins containing aminomethylenephosphonic acid groups by reacting macroporous aminomethylated crosslinked vinylaromatic resins with formaldehyde and phosphorus(III) compounds in aqueous mineral acids; it is characterised in that sulphuric acid is used as mineral acid and the latter is employed in an amount such that its concentration is at least 20% by weight based on the weight of the liquid phase of the reaction mixture.
Inventors:
RAINHORUTO MARIA KURITSUPAA
HARORUTO HERAA
PEETAA MIHYAERU RANGE
FURIIDORITSUHI BERUNAA
ARUFUREETO MICHUKAA
HARORUTO HERAA
PEETAA MIHYAERU RANGE
FURIIDORITSUHI BERUNAA
ARUFUREETO MICHUKAA
Application Number:
JP20802089A
Publication Date:
February 02, 1994
Filing Date:
August 14, 1989
Export Citation:
Assignee:
BAYER AG
International Classes:
C08F8/00; B01J39/12; B01J45/00; C08F8/40; C08F12/00; C08F12/14; (IPC1-7): C08F8/40; B01J45/00
Domestic Patent References:
| JP57105404A | ||||
| JP5566904A |
Attorney, Agent or Firm:
Heiyoshi Odashima