Hostname: page-component-848d4c4894-ttngx Total loading time: 0 Render date: 2024-04-30T16:36:50.228Z Has data issue: false hasContentIssue false
  • English
  • Français

Silicone Containing Liquid Crystalline Polyurethanes and Polyesters

Published online by Cambridge University Press:  21 February 2011

Robert Kosfeld ,
F. Braun ,
L. Willner  and
M. Heb
Robert Kosfeld
Affiliation:
University of Duisburg, Department of Physical Chemistry D-4100 Duisburg, FRG
F. Braun
Affiliation:
University of Duisburg, Department of Physical Chemistry D-4100 Duisburg, FRG
L. Willner
Affiliation:
University of Duisburg, Department of Physical Chemistry D-4100 Duisburg, FRG
M. Heb
Affiliation:
University of Duisburg, Department of Physical Chemistry D-4100 Duisburg, FRG
Get access

Abstract

Series of poly(urethanes) were prepared in which the spacer groups between the rigid segments contained siloxanes. The conditions for the appearence of liquid crystallinity and a fair thermal stability were investigated and compared to those of corresponding esters.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 175: Symposium S – Multifunctional Materials , 1989 , 297
Copyright
Copyright © Materials Research Society 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1] Brostow, W., Kunststoffe - German Plastics 78, 795 (1988)Google Scholar
[2] Brostow, W., Polymer (1989) in pressGoogle Scholar
[3] Blumstein, A., Asrar, J., Blumstein, R.B. in: Liquid Crystals and Ordered Fluids, Vol.4, edited by Johnson, J.F. (Plenum Press, New York 1985) p. 311 Google Scholar
[4] Lenz, R.W., Pure & Appl. Chem. 57, 1537 (1985)Google Scholar
[5] Lorenzo, G.A., Verbit, L., Mol. Cry-st. Liq. Cryst. 30, 87 (1975)Google Scholar
[6] Bloom, A., Hung, P.L.K., Mol. Cryst. Liq. Cryst. 44, 323 (1978)Google Scholar
[7] Agocs, P.M., Motika, G., Szabo, J.A., Zoltai, A.I., Acta Phys. Chem. 27, 81 (1981)Google Scholar
[8] limura, K., Koide, N., Tanabe, H., Takeda, M., Makromol. Chem. 182, 569 (1981)Google Scholar
[9] Mormann, W., Brahm, M., Makromol. Chem. 190, 631 (1989)Google Scholar
[10] Tanaka, M., Nakaya, T., Kobunshi Ronbunshi 42, 529 (1985)Google Scholar
[11] Tanaka, M., Nakaya, T., Kobunshi Ronbunshi 43, 311 (1986)Google Scholar
[12] Tanaka, M., Nakaya, T., Makromol. Chem. 187, 2345 (1987)Google Scholar
[13] Tanaka, M., Nakaya, T., J. Macromol. Sci., Chem. A 24, 777 (1987)Google Scholar
[14] Sato, M., Kantor, S.W., Polymer Preprints Japan 34, 262 (1985)Google Scholar
[15] Stenhouse, P.J., Valles, E.M., Kantor, S.W., McKnight, W.J., Macromol. 22, 1467 (1989)Google Scholar
[16] Krichcldoff, H.R., Awe, J., Makromol. Chem. Rapid Commun. 2, 681 (1988)Google Scholar
[17] Kosfeld, R., Braun, F., Heß, M. WilIner, L., Liquid Crystals, 51, 217 (1989)Google Scholar
[18] Ringsdoff, H.R., Schneller, A., Brit. Polym. J. 13, 43 (1981)Google Scholar
[19] Willner, L., Braun, F., HeB, M., Kosfeld, R. in: Integration of Fundamental Polymer Science and TEchnology, Vol 4, edited by Lemstra, P.,Kleintjens, L. (Elsevier Applied Science Publishers, London 1989/1990 Google Scholar
[20] Compbell, T.W J. Am. Chem. Soc. 82, 3126 (1960)Google Scholar
[21] Kricheldoff, .H. R., Synthesis, 551 (1972)Google Scholar
[22].Kosfeld, R,Braun, F.,Willner, L., Heb, M, J. Organomet. Chem. 332, 63, (1987)Google Scholar
[23] Braun, ].F., Willner, L., HeB, M., Kosfeld, R., J. Organomet. Chem.366, 53 (1989)Google Scholar
[24] Braun, F., Willner, L., HeB, M., Kosfeld, R., Makromol. Chem., to be publishedGoogle Scholar
[25] Braun, F., Willner, L., HeS, M., Kosfeld, R., Makromol. Chem., Rapid Comm. 10, 51 (1989)Google Scholar
[26] Braun, R., PhD thesis, University of Duisburg, 1989 Google Scholar
[27] Aguilera, C., PhD thesis, University of Mainz, 1981 Google Scholar