title: Reaction of abietic acid with maleic anhydride and fumaric acid and attempts to find the fundamental component of fortified rosin.
abstract: Identification of the Diels-Alder adduct of Abietic Acid (AA) and maleic anhydride (MA) or Fumaric Acid (FA) using a Shimadzu QP 5050A Gas chromatograph Mass spectrometer revealed that AA and MA produced endo-maleopimaric acid (MPA) and endo-maleopimaric acid tricarboxylic acid. A reaction product of abietic acid and fumaric acid generated three peaks identified based on their mass spectra as fumaropimaric acid (FPA), FPA adducts and endo-MPA. To maximize the reaction between AA and MA or FA, molar ratio (AA and MA or FA), reaction time and reaction temperature were investigated. The best Diels-Alder reaction between abietic and maleic anhydride was at 125 degrees C for 1 h with a molar ratio of AA to MA of 1: 2. The best Diels-Alder reaction between AA and FA was at 200 degrees C for 1 h with a molar ratio of AA and FA of 1: 2.
authors.affiliation: Forest Products Research and Development Center-Forda, Jl. Gunung Batu 5, Bogor, Indonesia.
authors.forename: Bambang
authors.initials: B
authors.lastname: Wiyono
authors.forename: Sanro
authors.initials: S
authors.lastname: Tachibana
authors.forename: Djaban
authors.initials: D
authors.lastname: Tinambunan
mesh_terms: D045784:Abietanes / Q000737:chemistry*; D005650:Fumarates / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D007700:Kinetics; D008299:Maleic Anhydrides / Q000737:chemistry*; D013696:Temperature
chemical_list: D045784:Abietanes; D005650:Fumarates; D008299:Maleic Anhydrides; C032005:fumaric acid; C023710:abietic acid