Glycidyl azide polymer

Details Glycidyl azide polymer Glycidyl azide polymer

1993-07-23

1994-10-25

Krass, Frederick

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

Synthetic resins

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

552 10, 552 11, C07C24704, C07C 4311, C07C 43115

Patent

active

053590120

ABSTRACT:
Glycidyl azide polymers, which are used as binders in composite explosive and propellant compositions, include hydroxyl groups which react with the isocyanate curing agent normally used in such compositions. Since the functionality of available linear glycidyl azide polymers is less than two, triols and/or triisocyanates are needed to crosslink the chains to form a matrix. A glycidyl azide polymer with increased functionality (higher than two) and reactivity obviates the need for triols and triisocyanates in the compositions. Moreover, a glycidyl azide polymer with primary hydroxyl groups would give faster curing reactions at lower temperatures without gassing problems, eliminating the need for a catalyst. Examples of glycidyl azide polymer having increased functionality have one of the formulae: ##STR1## wherein R is ##STR2## wherein m and n are different from zero, and m+n is 4 to 60.

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patent: 5124463 (1992-06-01), Ampleman
patent: 5164521 (1992-11-01), Manzara et al.

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