Hydrocarbon-bridged thiomethylenephenol antioxidants
Abstract
Abstract HYDROCARBON-BRIDGED THIOMETHYLENEPHENOLS ARE PROVIDED HAVING THE FORMULA ((2,6-DI(CH3-),4-R,5-(HO-)PHENYL)-CH2-S)N-Y IN WHICH R IS A BRANCHED-CHAIN ALKYL OF 3 TO 12 CARBON ATOMS, Y IS A DIVALENT OR TRIVALENT ALKYLENE OF 2 TO ABOUT 20 CARBON ATOMS OR A MONONUCLEA AROMATIC RADICAL OF THE FORMULA -CH2-(R1,R2,R3,X-PHENYLENE)-CH2- WHEREIN R1, R2, AND R3 ARE HYDROGEN OR ALKYL OF 1-3 CARBON ATOMS AND X IS R1 OR -CH2-, AND N IS 2 OR 3. THEY ARE ANTIOXIDANTS FOR OXYGEN-SENSITIVE ORGANIC MATERIALS, PARTICULARLY POLYOLEFINS OF 2-6 CARBON ATOMS SUCH AS POLYPROPYLENE PLASTICS. THEN ARE PREPARED BY CONDENSING TWO OR THREE MOLES OF A 3-CHLOROMETHYL-2,4-DIMETHYL-6BRANCHED CHAIN ALKYLPHENOL WITH A HYDROCARBON DITHIOL OR TRITHIOL OR BY CONDENSING THE CORRESPONDING 3-MERCAPTOMETHYL PHENOL WITH A HYDROCARBON HAVING TWO OR THREE ACTIVE CHLOROMETHYL GROUPS.
Inventors
- 👤 John Song
Bibliographic Details
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