Polyethersulfone oligomers and blends

Details Polyethersulfone oligomers and blends Polyethersulfone oligomers and blends

1990-01-03

1995-08-29

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528170, 528172, 528173, 428260, 428287, 428288, 428290, 428408, 428410, 4284111, 428902, 427350, 4273855, C08G 7523

Patent

active

054461200

ABSTRACT:
Polysulfone and polyethersulfone oligomers made by the condensation of crosslinking end caps, monomers, diols, and dihalogen moieties exhibit improved solvent resistance which is necessary for their use in aerospace applications. Blends of the oligomers and corresponding polymers formed from the diols and dihalogen moieties, but without end caps, exhibit superior impact resistance when cured. The present invention describes improved prepregs and composites made from these oligomers.

REFERENCES:
patent: 4446191 (1984-05-01), Miyadera et al.

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