Antioxidant hindered phenolaldehydes

Details Antioxidant hindered phenolaldehydes Antioxidant hindered phenolaldehydes

C - Chemistry, Metallurgy

07

C

260/476, 260/566

C07C 45/00 (2006.01) C07C 45/68 (2006.01) C07C 47/26 (2006.01) C07C 47/27 (2006.01) C07C 47/36 (2006.01) C07C 47/46 (2006.01) C08K 5/13 (2006.01) D06M 13/12 (2006.01)

Patent

CA 1048529

ABSTRACT OF THE DISCLOSURE New p-hydroxyphenyl aldehydes of the formula Image in which R1 and R5 are each hydrogen or methyl, and R2, R4, R6 and R7 each represent a variety of organic substituents and n is 0 or 1, are used as stabilizers for polymeric substrates. They are manufactured by reducing the corresponding p-hydroxyphenylacetic acid chloride with hydrogen or by reacting a p-nydroxybenzyl halido with an aldehyde in the presence of a base or by reucting a dithiocarbamic acid p-hydroxybenzyl ester with an aldehyde in the presence of a base.

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