Azine polymers and process for preparing the same Patent
Synthesis of azine polymers for heat shields by azine-aromatic aldehyde reaction
Dalelio, G. F.↗
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Polymeric Schiff bases. XI - Prototype reactions of some monomeric diarylidene azines.
Decomposition temperature of monomeric azines relation to electronic nature of R substituent, contributing resonance structures and hydrogen bonding
Dalelio, G. F.↗
Fundamental Studies on the Synthesis of Heat-Resistant Polymers Progress Report No. 8, 31 Jan. - 15 Sep. 1965
Synthesis and thermal studies of polymeric azines - heat resistant polymers
AZINE↗
The fundamental studies on the synthesis of heat-resistant polymers Summary progress report no. 10, 15 Sep. 1965 - 31 Jan. 1966
Heat-resistant azine polymer synthesis by melt and solution method
POLYMER↗
Fundamental Studies on the Synthesis of Heat-resistant Polymers
Synthesis of heat resistant azine polymers
HEAT RESISTANCE↗
Polymeric Schiff bases. II.
Continuous azeotropic method for preparing high yields of azomethine monomers, including new polymeric Schiff bases, azines and ketanils
Crivello, J. V.↗
Ultraviolet and thermally stable polymer compositions
Copolymers, produced from aromatic substituted aromatic azine-siloxane compositions, are thermally stable, solar ultraviolet light non-degradable by wavelengths shorter than those reaching earth surface.
Adamson, M. J.↗
Ultraviolet and thermally stable polymer compositions
A class of polymers is provided, namely, poly(diarylsiloxy) arylazines. These polymers have a basic chemical composition which has the property of stabilizing the optical and physical properties of the polymer against the degradative effect of ultraviolet light and high temperatures. This stabilization occurs at wavelengths including those shorter than found on the surface of the earth and in the absence or presence of oxygen, making the polymers of the present invention useful for high performance coating applications in extraterrestrial space as well as similar applications in terrestrial service. The invention also provides aromatic azines which are useful in the preparation of polymers such as those of the present invention.
Reinisch, R. F.↗
Ultraviolet and thermally stable polymer compositions
A new class of polymers is provided, namely, poly (diarylsiloxy) arylazines. These novel polymers have a basic chemical composition which has the property of stabilizing the optical and physical properties of the polymer against the degradative effect of ultraviolet light and high temperatures. This stabilization occurs at wavelengths including those shorter than found on the surface of the earth and in the absence or presence of oxygen, making the polymers useful for high performance coating applications in extraterrestrial space as well as similar applications in terrestrial service. The invention also provides novel aromatic azines which are useful in the preparation of polymers such as those described.
Reinisch, R. F.↗
Chromophores from photolyzed ammonia reacting with acetylene: Application to Jupiters Great Red Spot
The high altitude of Jupiter's Great Red Spot (GRS) may enhance the upward flux of gaseous ammonia (NH3 ) into the high troposphere, where NH3 molecules can be photodissociated and initiate a chain of chemical reactions with downwelling acetylene molecules (C2H2 ). These reactions, experimentally studied earlier by (Ferris and Ishikawa [1987] Nature 326, 777-778) and (Ferris and Ishikawa [1988] J. Amer. Chem. Soc. 110, 4306-4312), produce chromophores that absorb in the visible and ultraviolet regions. In this work we photolyzed mixtures of NH3 and C2H2 using ultraviolet radiation with a wavelength of 214 nm and measured the spectral transmission of the deposited films in the visible region (400-740 nm). From these transmission data we estimated the imaginary indices of refraction. Assuming that ammonia grains at the top of the GRS clouds are coated with this material, we performed layered sphere and radiative transfer calculations to predict GRS reflection spectra. Comparison of those results with observed and previously unreported Cassini visible spectra and with true-color images of the GRS show that the unknown GRS chromophore is spectrally consistent with the coupled NH3-C2H2 photochemical products produced in our laboratory experiments. Using high-resolution mass spectrometry and infrared spectroscopy we infer that the chromophore-containing residue is composed of aliphatic azine, azo, and diazo compounds.
Jupiter↗