Naphthofuranylnaphthol stabilizers

Details Naphthofuranylnaphthol stabilizers Naphthofuranylnaphthol stabilizers

1975-05-02

1976-02-24

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

2603462M, C08J 320

Patent

active

039403645

ABSTRACT:
Naphthofuranylnaphthols are produced by (1) reacting glyoxal with a naphthol in the presence of an acidic catalyst to form an acetal, and (2) thereafter partially hydrolyzing the acetal with an acidic or basic catalyst. Naphthofuranylnaphthols are effective stabilizers of organic materials against the deleterious effects of oxygen, heat, and light. The stability of dienic polymers and styreneacrylonitrile copolymers is particularly enhanced by incorporating stabilizing amounts of naphthofuranylnaphthols.

REFERENCES:
patent: 2235629 (1941-03-01), Clifford
patent: 2682473 (1954-06-01), Thompson et al.
patent: 3095426 (1963-06-01), Peck
patent: 3598842 (1971-08-01), Martini
Monatsch, 73, (1940), pp. 45 to 56, Dischendorfer.

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