US 7,705,176 B2 · Macromolecular antioxidants based on sterically hindered phenols and phosphites

Abstract

Sterically hindered phenol and phosphite based compounds, represented by a formula selected from I-III: and their use as antioxidants in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products is disclosed herein.

Claims2

Dependent claims

A compound represented by Structural Formula I:

wherein R is represented by the following structural formula:
m is an integer from 0 to 12.

Dependencies are inferred from the claim text.

Facts

Application

11/588,855Filed 27 Oct 2006 · us provisional application

Priority

27 Oct 2005

Published

US 2007/0135539 A114 Jun 2007

Granted

27 Apr 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C07F 9/1414
Esters of phosphorous acids: with arylalkanols
C07F 9/1412
Esters of phosphorous acids: polyol derivatives esterified at least twice by phosphorous acid groups
C07F 9/145
Esters of phosphorous acids: with hydroxyaryl compounds
C07F 9/6571
Having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms: having phosphorus and oxygen…

Macromolecular antioxidants based on sterically hindered phenols and phosphites

Life of this patent

Abstract

Claims2

Macromolecular antioxidants based on sterically hindered phenols and phosphites

Life of this patent

Abstract

Claims2