Series of polyurethanes were prepared in which the spacer groups between the rigid segments contained siloxanes. The conditions for the appearance of liquid crystallinity and a fair thermal stability were investigated and compared to those of corresponding esters.
This article is from 'Multifunctional Materials Held in Boston, Massachusetts on November 29-December 1 1989. Materials Research Society Symposium Proceedings. Volume 175,' AD-A253 089, p297-301.