LIGHT-COLORED ROSIN AND ROSIN ESTER COMPOSITIONS

A three-step method to prepare a light-colored rosin ester is disclosed wherein at least in one of the steps (a) and (c) a co-catalyst is applied and wherein at least in one of the steps (a) and (c) a disproportionation catalyst is applied. In the second step, a distilled rosin is obtained which is...

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Bibliographische Detailangaben
Hauptverfasser:	LANGE, Jos H. M, SCHAAPMAN, Mark C
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DRIERS (SICCATIVES) DRYING-OILS DYES FRENCH POLISH METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP TURPENTINE
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Beschreibung
Zusammenfassung:	A three-step method to prepare a light-colored rosin ester is disclosed wherein at least in one of the steps (a) and (c) a co-catalyst is applied and wherein at least in one of the steps (a) and (c) a disproportionation catalyst is applied. In the second step, a distilled rosin is obtained which is esterified with a polyol into a light-colored rosin ester. In one embodiment, the co-catalyst has a triplet formation quantum yield (φT) of greater than 0.5 and a triplet lifetime (τT) of greater than 0.5 microseconds. In another embodiment, the co-catalyst is selected from acridone, anthrone, 9-fluorenone, thioxanthone, xanthone, derivatives and combinations thereof.