Stabilizer for synthetic resins

Details Stabilizer for synthetic resins Stabilizer for synthetic resins

1981-08-31

1983-05-24

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524291, 524302, 524304, 524305, 544221, 560 75, C07C 69612, C07D25134, C08K 513, C08K 524

Patent

active

043851436

ABSTRACT:
Synthetic resins, particularly polyolefins, are markedly improved in their resistances to heat and oxidation by the incorporation of a 2-methyl-4-t-butyl-5-hydroxyphenylalkanoic acid ester alone or in combination with a thioether-type antioxidant represented by the general formula ##STR1## wherein R represents an alkyl group of 12 to 20 carbon atoms, or by the general formula ##STR2## wherein R represents an alkyl group of 4 to 20 carbon atoms.

REFERENCES:
patent: 3285855 (1966-11-01), Dexter et al.
patent: 3629194 (1971-12-01), Onishi et al.
patent: 3763093 (1973-10-01), Kletecka et al.
patent: 3862053 (1975-01-01), Susi
patent: 3988363 (1976-10-01), Spivack et al.
patent: 4032562 (1977-06-01), Dexter et al.
Nishinaga et al., Synthesis, pp. 553-554, 1976.

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