Nelson S. Marans - Silver Spring MD Thomas E. Ferington - Columbia MD Philip Messina - Colonia NJ
Assignee:
W. R. Grace & Co. - New York NY
International Classification:
C08K 702
US Classification:
260862
Abstract:
Ultra fine polypropylene fibers having a length of 1-100 microns and a diameter of 0. 05-2 microns are admixed with a polyester resin composition comprising a polyester resin of a polyhydric alcohol and an unsaturated polycarboxylic acid admixed with a solvent such as styrene in an amount effective to cause the resulting thickened composition to have a thixotropic index of 1. 5-8. The resulting thickened composition is useful for building or repairing fiber glass-polyester boats. The incorporation of such ultrafine polypropylene fibers in an epoxy resin composition also thickens the epoxy resin composition and causes it to have a thixotropic index of about 1. 5-8.