Benzofuranylphenol stabilizers

Details Benzofuranylphenol stabilizers Benzofuranylphenol stabilizers

C - Chemistry, Metallurgy

09

K

31/73

C09K 15/06 (2006.01) C07D 307/80 (2006.01) C08K 5/1535 (2006.01) C08K 5/378 (2006.01) C09K 15/08 (2006.01)

Patent

CA 1106588

ABSTRACT OF THE DISCLOSURE Benzoruranylphenols are produced by (1) reacting glyoxal with a phenol in the presence of an acidic catalyst to form an acetal, and (2) thereafter partially hydrolyzing the acetal with an acidic or basic catalyst. Some benzo- furanylphenols are effective stabilizers of organic materials against the deleterious effects of oxygen, heat and light. the stability of dienic polymers and styrene-acrylonltrile copolymers is particularly enhanced by incorporating stabilizing amounts of some benzofuranylphenols.

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