Malkyd No.5 Maleic resin Arakawa Chemical Maleic Resins Inks INKS MALKYD No.5 is maleic resin in flakes form. It shows Partial compatibility with nitrocellulose, good weather resistance and color retention. It is used in oil varnish, printing ink, enamel. Maleic resin. Shows Partial compatibility with nitrocellulose, good weather resistance and color retention. Used in oil varnish, printing ink, enamel.