LOW VOC, LOW TACK GEL COAT RESIN

摘要

A LOW TACK, LOW VOC GEL COAT IS DISCLOSED COMPRISING A UNSATURATED POLYESTER RESIN DERIVED FROM MALEIC ANHYDRIDE AND UP TO 30% OF AN ORGANIC SOLVENT. THE RESIN IS CHARACTERIZED BY: A VISCOSITY OF LESS THAN OR EQUAL TO ABOUT 1750 mPa.s (1750 cp) AT 70% NVM IN STYRENE ; A GLASS TRANSITION TEMPERATURE GREATER THAN OR EQUAL TO ABOUT 11ºC ; AND A WEIGHT AVERAGE MOLECULAR WEIGHT LESS THAN OR EQUAL TO ABOUT 6,050. A PROCESS FOR MAKING SUCH A GEL COAT IS ALSO DISCLOSED.