3,4-dihydro-2h-benzopyran derivatives, a method of producing...

Details 3,4-dihydro-2h-benzopyran derivatives, a method of producing... 3,4-dihydro-2h-benzopyran derivatives, a method of producing...

C - Chemistry, Metallurgy

07

D

260/357, 400/710

C07D 311/72 (2006.01) C07D 311/92 (2006.01) C08K 5/15 (2006.01) C08K 5/1545 (2006.01) C08K 5/37 (2006.01)

Patent

CA 1203809

ABSTRACT OF THE DISCLOSURE There is provided a class of novel 3,4-dihydro-2H- benzopyran derivatives which either have excellent inhibitory activity against unfavorable effects of heat, light and oxidative factors or are of use as precursors of compounds having such activity, and methods for producing these derivatives. Also provided are methods of using such 3,4-dihydro-2H-benzopyran derivatives as stabilizers for organic materials sensitive to heat, light or/and oxidative factors, and organic compositions containing such stabilizers.

441762

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