Temptime Corporation

Lee J Hall

Ray H Baughman

Thaddeus Prusik

Dawn E Smith

Mikhail E Kozlov

Carl Michael Lentz

Elizabeth Castillo Martinez

Crystallized diacetylenic compounds having certain crystallographic and other characteristics; diacetylenic compounds and mixtures crystallized from diacetylenic solutions; methods of preparing and identifying solvent systems for dissolving diacetylenic compounds; diacetylenic solutions; methods of recrystallizing diacetylenic compounds; crystals of 2,4-hexadiyn-1,6-bis(alkylurea) compounds; and ambient condition indicators and time-temperature condition indicators comprising crystallized diacetylenic compounds.

Time-temperature indicators comprising crystallized diacetylenic indicator compounds

Crystallized diacetylenic indicator compounds and methods of preparing the compounds

Solid polymerizable diacetylenic monomer compositions, including compositions co-crystallized from a diversity of solvent systems under diverse cooling conditions, can exhibit diffraction patterns associated with the color development reactivities of the compositions. High reactivity compositions are disclosed and high reactivity and low reactivity phases can be identified. A low angle powder X-ray diffraction peak can indicate the presence of one or more crystal phases in a composition. A fingerprint region can exhibit fingerprint patterns of diffraction peaks associated with different reactivities. Information about polymerization of the diacetylenic monomers is disclosed usingC nuclear magnetic resonance ('NMR') characterization. Diacetylenic monomer compositions useful in ambient condition indicators, for example time-temperature indicators are disclosed.

Co-crystallizable diacetylenic monomer compositions, crystal phases and mixtures, and related methods

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Irving, TX, United States of America

Lee J Hall