Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1992-03-05
1994-08-02
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523102, 524100, 426321, 426323, 426331, 426410, 426415, A23B 700, B65B 5500, C08K 53467
Patent
active
053346238
ABSTRACT:
The present invention provides a composition for absorbing ethylene and other unsaturated compounds. The composition comprises electron-deficient dienes or trienes incorporated in an ethylene-permeable substrate. In a preferred form the composition comprises tetrazine dicarboxyoctyl ester in an ethylene-permeable, hydrophobic polymeric substrate. In a preferred form the composition is cast as a thin film suitable for wrapping and/or packaging. The present invention also provides a method of retarding the ripening or senescence of fruit and other plant material comprising confining the fruit or plant material in an ambient atmosphere subject to the ethylene-absorbing action of a composition comprising an electron-deficient diene or triene incorporated in an ethylene-permeable substrate.
REFERENCES:
patent: 4021400 (1977-05-01), McKenna
patent: 4962142 (1990-10-01), Migdol et al.
"Dihydropyridazine aus Olefinen und 3,6-Dicarbomethoxy-1,2,4,5-tetrazine" by Avram et al. Chem. Ber. 95, 2248-53, 1962.
"Thermal Cycloaddition of Dimethyl 1,2,4,5-Tetrazine-3,6-dicarboxylate with Electron-Rich Olefins", Boger et al. J. Org. Chem. 49, 4405-4409, 1984.
Patents Abstracts of Japan, C-216, p. 94, JP.A. 58-220648 (Toyo Soda Kogyo K.K.) Dec. 22, 1983 the whole abstract.
Patents Abstracts of Japan C-617, p. 71, JP.A. 1-94982 (Sukairaito Kogyo K.K.) Apr. 13, 1989 the whole abstract.
Derwent WPI/L Online Abstract Accession No. 81-22187D, JP.A. 56010458 (Honshu Paper Mfg K.K.) Feb. 2, 1981 the whole abstract.
Commonwealth Scientific and Industrial Research Organisation
Michl Paul R.
Yoon Tae H.
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