Method of making purely primary diamines

Details Method of making purely primary diamines Method of making purely primary diamines

1989-05-18

1990-06-12

Anderson, Harold D.

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

Synthetic resins

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

525 50, 525414, 528 38, 528403, 528408, 528417, 528425, C08G 7726, C08G 5900, C08G 5968, C08G 6334

Patent

active

049333968

ABSTRACT:
The present invention provides a method for making primary amine terminated linear polyethers of molecular weight above about 3500 which have virtually no contamination from in-chain secondary amine functionalities or amine-terminated tertiary amine side-chains. This method involves the production of novel intermediates.
The invention also provides purely linear polyether-polyurea block copolymers formed by chain extension of the primary amine terminated linear polyethers.

REFERENCES:
patent: 3436359 (1969-04-01), Hubin et al.
Polyurethanes: Chemistry and Technology, Part II, Saunders, J. H. and Frisch, K. C., Interscience, NY 1964, pp. 431-447.

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