Polyether amides and methods therefor

Details Polyether amides and methods therefor Polyether amides and methods therefor

C - Chemistry, Metallurgy

08

G

402/244

C08G 69/40 (2006.01) C08G 69/28 (2006.01)

Patent

CA 2038632

NOVEL POLYETHER AMIDES AND METHODS THEREFOR (D#80,875-F) Abstract of the Disclosure Novel polyether amides produced by reacting at least one polyalkylene glycol diamine with at least two dicarboxylic acids or esters thereof are described. The polyethylene glycol diamine has the formula NH2-(CH2CH2O)X-CH2CH2-NH2, where x ranges from 2 to 6, and at least one of the dicarboxylic acids is an aromatic dicarboxylic acid. These novel polyether amides may have the formula: Image where each R and R' are independently an alkyl or aryl moiety having from 3 to 34 carbon atoms, where at least one R or R' is an aryl moiety, and where each x and y independently have the values noted. Suitable dicarboxylic acids include adipic acid, azelaic acid, sebacic acid, dodecane- dioic acid, terephthalic acid, isophthalic acid, t-butyl isophthalic acid, and mixtures thereof. Suitable diamines include triethylene glycol diamine (JEFFAMINE? EDR-148 amine) and tetraethylene glycol diamine (JEFFAMINE? EDR-192 amine), among others. The resulting polyether amides are useful to make polymers, including fibers, with unusually good water absorbancy properties. The inventive methods successfully incorporate triethylene glycol diamine and aromatic dibasic acids, where this cannot be accomplished directly.

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