-
Usoro Rosin Resin SOR – SOR 422
Rosin resin SOR 422 bụ resin maleic acid, nke a makwaara dị ka resin maleic acid kpọrọ nkụ. Ọ bụ granular siri ike kwadebere site na mmeghachi omume nke rosin na maleic acid gbanwere site na ịgbakwunye rosin na maleic acid anhydride na esterification na glycerol ma ọ bụ pentaerythritol.
