Polyether having heterofunctional groups at both ends, process f

Details Polyether having heterofunctional groups at both ends, process f Polyether having heterofunctional groups at both ends, process f

1996-07-16

1997-10-21

Krass, Frederick

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

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

25218214, 25218227, 2521823, 25218234, C08G 5968, C08G 6504

Patent

active

056797656

ABSTRACT:
The present invention relates to a bifunctional polyether having groups different from each other at both ends, with a polymerization degree of 5 to 10000 and consisting of repeating units each represented by the following formula (I): ##STR1## (wherein R.sub.1, represents a hydrogen atom, halogen atom, or a lower alkyl group optionally substituted by a halogen atom, and R.sub.1 in each repeating unit may be the same or different), as well as to a process for the preparation thereof and a polymerization initiator therefor. The process of production and polymerization initiator of the present invention enable 100% introduction of a primary amino group into one of the ends of polyether.

REFERENCES:
patent: 3425960 (1969-02-01), Sandler et al.
patent: 4243787 (1981-01-01), Boileau et al.
patent: 4833213 (1989-05-01), Lier et al.
patent: 4943626 (1990-07-01), McGrath et al.
patent: 5478920 (1995-12-01), Drysdale
Griehl et al, Chemical Abstracts 108:105259, "Catalysts for the Preparation of Polymers with Terminal Amino Groups" Jul. 1987.

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