Diacetylene segmented copolymers

Details Diacetylene segmented copolymers Diacetylene segmented copolymers

1986-05-27

1988-01-26

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

356 43, C08G 1832

Patent

active

047217693

ABSTRACT:
Diacetylene segmented copolymers having first and second segments are disclosed. The preferred segmented copolymers of this invention are prepared from three basic monomers: a diisocyanate, a flexible elastomeric prepolymer and a chain extender containing a diacetylene unit. The resultant segmented copolymers exhibit the mechanical properties of elastomers and also many of the novel characteristics of the polydiacetylenes. Also for the first time, a polydiacetylene has been produced which exhibits mechanochromism.

REFERENCES:
patent: 4215208 (1980-07-01), Yee et al.

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