초록 ▼

A cross-linkable oligomer is formed by reacting polysulfone or polyethersulfone compounds holding two amino groups, aliphatic and/or aromatic compounds containing two anhydride groups, and an amino-phenol. The resulting oligomer has a molecular weight between about 800 and 5000, preferably between a

A cross-linkable oligomer is formed by reacting polysulfone or polyethersulfone compounds holding two amino groups, aliphatic and/or aromatic compounds containing two anhydride groups, and an amino-phenol. The resulting oligomer has a molecular weight between about 800 and 5000, preferably between about 1000 and 2500, and can be coreacted with an aldehyde and thermally cross-linked to form a cured, thermally stable, solvent-resistant product. The curing reaction mixture preferably also includes a promotor.

대표청구항 ▼

A cross-linkable oligomer formed by reacting: [Figure] (2) n+1 moles of an aliphatic dianhydride and (3) n moles of at least one member selected from the group consisting of polysulfones and polyethersulfones terminated with two amino groups, wherein n is selected so that said oligomer has a molecul

A cross-linkable oligomer formed by reacting: [Figure] (2) n+1 moles of an aliphatic dianhydride and (3) n moles of at least one member selected from the group consisting of polysulfones and polyethersulfones terminated with two amino groups, wherein n is selected so that said oligomer has a molecular weight between about 800 and 5000.