Synthesis of two-dimensional polymers by molecular recognition a

Details Synthesis of two-dimensional polymers by molecular recognition a Synthesis of two-dimensional polymers by molecular recognition a

1991-03-20

1993-07-20

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526273, 526313, 526320, C08F 2070

Patent

active

052294749

ABSTRACT:
A new variety of side chain liquid crystal polymers. The macromolecules of these materials are comb-shaped and differ from conventional side-chain liquid crystal polymers in that the comb's teeth are longer and semi flexible. The oligomeric side chains contain a long flexible spacer not only at their junction with the backbone but also in the center of the mesogen. Specific features of the systems include monosubstitution of enantiotopic protons in the central spacer by a cyano group and a long alkoxy tail at the terminus. An unusual property of these materials is a lower liquid crystal-isotropic transition temperature relative to that of their monomeric precursors.

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patent: 5057339 (1991-10-01), Ogawa
X. J. Hong et al. (1989) Polymer Preprints 30(2), 469.
D. M. Walba et al. (1986) J. Am. Chem. Soc. 108, 5210-5221.
CA112:56817v.
A. Singh et al (1986) Polym Preprints 27(2), 393-394.

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