Polyethers and their use in the production of flexible polyurethane foams

An amine-containing polyether that is the reaction product of a reaction mixture comprising:

• (a) a polyether of the formula A(OZOX)n where:
• (i) A is a polyether derived from a hydroxyl-functional polyether having a hydroxyl functionality (y) of 1 to 8 and an OH number of 20 to 400 mg KOH/g, wherein the free hydroxyl functionality of A is y-m, wherein m is a number having a value of 1 to 7;
• (ii) Z is a divalent residue comprising an alkylene oxide moiety;
• (iii) X is an amine reactive moiety;
• and
• (iv) n is a number having a value of 1 to 7;
• and
• (b) an amino diphenylamine of the structure:
• in which R is an aryl radical, each R1 is independently hydrogen, a C1-C4 alkyl radical, or a C1-C4 alkoxy radical, R2 is hydrogen or a C1-C4 alkyl radical, and each R3 is independently hydrogen, a C1-C4 alkyl radical, a C1-C4 alkoxy radical, or a radical of the formula:
• in which R4 is a C1-C12 alkyl radical, a C5-C12 cycloalkyl radical, a C6-C12 aryl radical, or a C7-C13 aralkyl radical, and R5 is hydrogen or a C1-C12 alkyl radical.