Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1997-05-20
2000-07-04
Barts, Samuel
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528125, 528128, 528170, C08G 6926
Patent
active
060840579
ABSTRACT:
The present invention relates to amine compositions and the preparation of polyimides. The polyimides can be used for inducing alignment of a liquid crystal medium with polarized light in liquid crystal display elements.
REFERENCES:
patent: 4974941 (1990-12-01), Gibbons et al.
patent: 5186985 (1993-02-01), Estes et al.
Shigeki Ishibashi Misako Hirayama Tohru Matsuura Polyimide with Fluorinated Side Chains for Liquid Crystal Alignment Mol. Cryst. Liq. Cryst., 1993, vol. 225, pp. 99-105.
A. A. Malik D. Tzeng P. Cheng K. Baum Synthesis of Fluorinated Diisocyanates J. Org. Chem. 1991, 56, 3043-3044.
Kurt Baum and Aslam A. Malik Difunctional Monomers Based on Perfluoropropylene J. Org. Chem. 1994, 59, 6804-6807.
Gibbons Wayne M.
Shannon Paul J.
Zheng Hanxing
Barts Samuel
Elsicon Inc.
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