2024-88-6Relevant articles and documents
4,4'-Isopropylidenediphenyl Bis(chloroformate)
Bryant, Garold R.,King, Joseph A.
, p. 1106 - 1108 (1994)
In the structure of C17H14Cl2O4, (1), each Cl-CO-O moiety is perfectly planar.The C=O carbonyl bonds appear normal with lengths of 1.177 (5) and 1.162 (7) Angstroem , as do the carbonyl-chlorine bonds at 1.762 (5) and 1.742 (5) Angstroem .The planes defined by the Cl-CO-O groups are rotated through dihedral angles of 178.9 (3) and 177.4 (3) degree relative to the adjacent phenyl rings.The two phenyl rings are canted relative to each other with a dihedral angle of 104.2 (10) degree.
CARBAZOLYL MONOMERS AND POLYMERS
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, (2008/12/06)
The invention provides compounds of formula I wherein R is H or alkyl; R1, R2, and R4 are independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R3 and R5 are independently at each occurrence hydrogen, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; and a, b and d are independently 0 or an integer ranging from 1 to 3. The invention further provides polymers derived from compounds of formula I, said polymers may be polyesters, polyethers, polycarbonates, polyestercarbonates, polyetherketones, polyethersulfones, and the like. Compounds and polymers of the invention find use in light emitting devices.
Oxyformamidates
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, (2008/06/13)
Compounds of the formula STR1 WHEREIN A is a linking group, X is an O--CO-- or --SO2 -- group and n is at least 2, are prepared from the corresponding N',N'-disubstituted hydrazides by quaternization and treatment with alkali or reaction with an alkylene epoxide or from the corresponding compound wherein n = 1 and A is a polymerizable group by polymerization. The compounds are unstable to heat and may be used as cross-linking agents for polymers or as chain-extending agents, bonding agents or adhesives.
