Patent ID: 6093777
Filing Date: 2000-07-25
Classification: B44C,C08L,Y10S

Abstract:
A thermoset product comprising a molded and cured or partially cured thermosetting composition, said thermosetting composition comprising a thermosetting resin matrix which includes a thermosetting resin and a toughening agent, said toughening agent comprising a hyperbranched dendritic macromolecule having at least one reactive group, said macromolecule built up of ester units, optionally, in combination with ether units which is derived from a monomeric or polymeric nucleus having at least one epoxide, hydroxyl, carboxyl or anhydride group, or a mixture thereof; from 1 to 20 generations of at least one monomeric or polymeric branching chain extender bonded to said nucleus, and containing at least three reactive groups wherein at least one is a hydroxyl group and at least one is a carboxyl or anhydride group; and, optionally, at least one generation of at least one spacing extender and/or chain stopper; wherein said weight ratio of thermosetting resin matrix to toughening agent is from 99:1 to 70:30.