PROCESS FOR MAKING AND FOR POLYMERIZING CHROMENES AND PRODUCTS THEREOF

This invention relates to a solvent process for the conversion of aromatic propargyl ethers into chromenes. The process can be catalyzed with copper or zinc salts. The preferred salt is cuprous chloride. The most preferred solvent is dichlorobenzene. The invention also relates to chromene products f...

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Bibliographische Detailangaben
Hauptverfasser:	JAMES GODSCHALX, STOIL K. DIRLIKOV, MUTHIAH INBASEKARAN
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	This invention relates to a solvent process for the conversion of aromatic propargyl ethers into chromenes. The process can be catalyzed with copper or zinc salts. The preferred salt is cuprous chloride. The most preferred solvent is dichlorobenzene. The invention also relates to chromene products formed using the process and to the polymerization of that chromene product and its polymerized product, the latter product having substantially improved flexural modulus and flexural strength properties. The polymerized product is also moisture insensitive.