The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2006
Filed:
Nov. 05, 2002
Qi Wang, Birdsboro, PA (US);
Sandor Nagy, Naperville, IL (US);
Qi Wang, Birdsboro, PA (US);
Sandor Nagy, Naperville, IL (US);
Other;
Abstract
The oxidation of a polymer is inhibited by adding to the polymer about 0.005 to about 10 phr of an antioxidant having (in non-polymeric form) the general formula The polymer can be poly(vinylchloride), a polycarbonate, a polyether, polyethylene, polypropylene, or a mixture thereof when the antioxidant is not phthalide and can be poly (vinylchloride), a polycarbonate, a polyether, or a mixture thereof when the antioxidant is phthalide. In the formula, E is O, S, or N, Ris H, R', OR′, SR′, OP(R′), COR′, each R is independently selected from R, alkylenyl from Cto C, aminoalkyl from Cto C, and hydroxyalkyl from Cto C, R′ is alkyl from Cto Cor aryl, alkylaryl, or aralkyl from Cto C, R″ is G, GO, GS, GNH, NHG, NHGO, NHGNH, NHGS, OG, OGO, OGNH, OGS, SGO, SGNH, or SGS, G is aklkylenyl from Cto C, arylenyl from Cto C, alkylarylenyl from Cto C, or arylalkylenyl from Cto C, m is 0 if E is O or S and is 1 if E is N, and two R groups can join from an alicyclic ring or an aromatic ring or an R group and an Rgroup can join to form an alicyclic ring.