Inhibition of irradiation yellowing in polysulfone compositions

Details Inhibition of irradiation yellowing in polysulfone compositions Inhibition of irradiation yellowing in polysulfone compositions

1986-11-14

1989-10-10

Kight, John

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524207, 524247, 524248, 524249, 524250, 524384, 524385, 524386, 524387, C08K 505, C08K 513, C08K 502, C08K 503

Patent

active

048732788

ABSTRACT:
A radiation sterilized polysulfone resin composition exhibiting improved color stability comprising: (i) at least one polysulfone resin; and (ii) an amount effective to inhibit yellowing of said polysulfone resin upon its exposure to sterilizing radiation of at least one stabilizing compound selected from carboxylic acid esters, alcohols, epoxides, sulfones, diketones, thio compounds, alkenes, hydroaromatics, cyclic ethers, and mixtures thereof.

REFERENCES:
patent: 3642946 (1972-02-01), Grabowski
patent: 3836099 (1974-09-01), Mathis
patent: 4065517 (1977-12-01), Okada et al.
patent: 4255319 (1981-03-01), Peters
patent: 4274932 (1981-06-01), Williams et al.
patent: 4369136 (1983-01-01), Robeson et al.
patent: 4409317 (1983-10-01), Shiraishi
patent: 4503168 (1985-03-01), Hartsing, Jr.
patent: 4532288 (1985-07-01), Robeson
patent: 4551493 (1985-11-01), Blinne et al.

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