Solvent resistant polysulfone and polyethersulfone compositions

Details Solvent resistant polysulfone and polyethersulfone compositions Solvent resistant polysulfone and polyethersulfone compositions

1981-06-16

1983-11-08

Lee, Lester L.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

427350, 4273855, 528170, 548435, 548476, 548547, C08G 7312

Patent

active

044142692

ABSTRACT:
Resins are prepared from polysulfone and polyethersulfone polymers that bear functional groups derived from compounds that are condensation products of amino-phenols and acid anhydrides. The polymers are prepared by coreacting aromatic compounds holding two hydroxyl groups, aromatic compounds holding two active halogen groups, and the condensation product of amino-phenol and acid anhydride, the condensation product holding one hydroxyl group. The resulting product has a molecular weight between about 1,000 and 40,000, preferably between about 5,000 and 30,000, and can be cross-linked to form a resin that is thermoplastic and solvent resistant.

REFERENCES:
patent: 3265708 (1966-08-01), Stiteler
patent: 3536670 (1970-10-01), Aclonry et al.
patent: 3761441 (1973-09-01), D'Alessandro et al.
patent: 3770697 (1973-11-01), Holub et al.
patent: 3839287 (1974-10-01), Kwiatkowski et al.
patent: 4176223 (1979-11-01), Irwin
patent: 4239883 (1980-12-01), Stenzenberger
patent: 4297474 (1981-10-01), Williams et al.

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