Polymeric polydentate complexons and a method for their preparat

Details Polymeric polydentate complexons and a method for their preparat Polymeric polydentate complexons and a method for their preparat

1980-12-19

1982-08-10

Hamrock, William F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525375, 525382, 536 56, 536 61, 536102, 536106, 5253305, 5253285, C08F 830

Patent

active

043439209

ABSTRACT:
The invention pertains to polymeric polydentate complexons (i.e. chelating agents) of general formulae I and II ##STR1## where P is a linear or three-dimensional polymeric skeleton and X is --0-- or ##STR2## while R is H, C.sub.1 -C.sub.6 alkyl, or phenyl or phenyl substituted with 1-2 C.sub.1 -C.sub.6 alkyl or alkoxy groups. Another objective of the invention is a method for producing the polymeric polydentate complexons described above, wherein a compound P -XH, where P and X have the above given meaning, reacts with 4,4'-ethylenebis(2,6-morpholinedione) the presence of an inert solvent and, if it is desired, also in the presence of acidic or basic catalysts, e.g. protic acids, Lewis acids, tertiary amines, and alkaline or alkaline earth salts of carboxylic acids.

REFERENCES:
patent: T896055 (1972-03-01), Long et al.
patent: 3471460 (1969-10-01), Rees
patent: 3519610 (1970-07-01), Huntzinger
patent: 3884846 (1975-05-01), Otsuki et al.
patent: 3896092 (1975-07-01), Epton et al.
Analytical Chemistry, vol. 49, #3, (Mar. 1977), Moyers et al., pp. 418-423.

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