Esters of 3-tert-butyl or 3-tert-butyl-5-alkyl-4-hydroxylphenyl(

Details Esters of 3-tert-butyl or 3-tert-butyl-5-alkyl-4-hydroxylphenyl( Esters of 3-tert-butyl or 3-tert-butyl-5-alkyl-4-hydroxylphenyl(

1987-11-18

1990-03-27

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560075, 524219, C07C 6988

Patent

active

049122495

ABSTRACT:
Useful for the stabilization of polymers, especially polypropylene and polyethylene are esters of 3-tert-butyl or 3-tert-butyl-5-alkyl-4-hydroxyphenyl(alkane) carboxylic acids with oxethylates of bis-(4- or 2-hydroxyphenyl) alkanes, oxides, sulfides or sulfones, with oxethylates of tris-(4-hydroxyphenyl) alkanes, or with oxethylates of 1,3,5-tris-(4-hydroxyphenyl isopropylidene) aryls, the oxethylate preferably comprising a hydroxyethoxy group substituted for each hydroxyl group.

REFERENCES:
patent: 4594444 (1986-10-01), Orban, I
patent: 4668725 (1987-05-01), Broussand
patent: 4670495 (1987-06-01), Evans

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