Alkylated 1,1-bis(4-aminophenyl)-1-phenyl-2,2,2-trifluoroethanes

Details Alkylated 1,1-bis(4-aminophenyl)-1-phenyl-2,2,2-trifluoroethanes Alkylated 1,1-bis(4-aminophenyl)-1-phenyl-2,2,2-trifluoroethanes

1990-01-29

1991-02-05

Hines, Robert V.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C32100

Patent

active

049906674

ABSTRACT:
Diamine compounds having the structural formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently methyl, ethyl or isopropyl groups, can be used in preparing various polymers which are useful in gas separation membranes. The combined effect of alkyl substituents ortho to the amino groups along with the specific bridging group imparts useful properties to polymeric membranes formed with these diamines.

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M. Salame, "Prediction of Gas Barrier Properties of High Polymers," Poly. Ing. Sci., vol. 26, p. 1543 (1986).
W. D. Krag et al, "Synthesis of Multifunctional Triarylfluoroethanes.1.Condensation of Fluoro Ketones," J. Org. Chem., vol. 42, No. 7 (1977) pp. 1186-1189.

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