Polymeric phenolic antioxidants
AssigneeMilliken & Company
InventorsNicholas G. Moon, Haihu Qin, Sharon A. Free, Mark E. Ragsdale, Michael Hong
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Abstract
A phenol compound comprises a phenyl group, a hydroxy group directly bonded to the phenyl group, and at least one polymeric substituent bound to the phenyl group. The polymeric substituent comprises three or more monomers units. A method for producing a polyurethane polymer comprises the steps of (a) providing a polyol; (b) providing a polyisocyanate compound; (c) providing the phenol compound described above; (d) combining the polyol, the polyisocyanate compound, and the phenol compound to produce a reaction mixture; and (e) allowing the polyol and the polyisocyanate compound to react to produce a polyurethane polymer.
Claims17
A phenol compound comprising a phenyl group, a hydroxy group directly bonded to the phenyl group, two steric hindering groups directly bonded to the phenyl group in positions that are ortho to the hydroxy group, and at least one polymeric substituent bound to the phenyl group, the polymeric substituent comprising three or more monomer units, wherein the polymeric substituent is directly bonded to a linking group, the linking group is directly bonded to a carbon atom of the phenyl group, and the linking group is an oxygen atom, and wherein the polymeric substituent terminates in a hydroxy group.
A method for producing a polyurethane polymer, the method comprising the steps of:
- (a) providing a polyol;
- (b) providing a polyisocyanate compound;
- (c) providing a phenol compound comprising a phenyl group, a hydroxy group directly bonded to the phenyl group, and at least one polymeric substituent bound to the phenyl group, the polymeric substituent comprising three or more monomer units, wherein the polymeric substituent is directly bonded to a linking group, the linking group is directly bonded to a carbon atom of the phenyl group, and the linking group is an oxygen atom;
- (d) combining the polyol, the polyisocyanate compound, and the phenol compound to produce a reaction mixture;
- and
- (e) allowing the polyol and the polyisocyanate compound to react to produce a polyurethane polymer.
Dependencies are inferred from the claim text.