Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1990-04-10
1992-02-04
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528310, 5283291, 528335, 528347, C08G 6926
Patent
active
050861620
ABSTRACT:
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 NH.sub.2 --(CH.sub.2 CH.sub.2 O).sub.x --CH.sub.2 CH.sub.2 --NH.sub.2, where x ranges from 2 to 6, and at least one of the dicarboxylic acids is an aromatic discarboxylic acid. These novel polyether amides may have the formula: ##STR1## where each R and R' are independently an alkylene or arylene moiety having from 3 to 34 carbon atoms, where at least one R or R' is an arylene moiety, and where each x and y independently have the values noted. Suitable dicarboxylic acids include adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, terephthalic acid, isophthalic acid, t-butyl isophthalic acid, and mixtures thereof. Suitable diamines include triethylene glycol diamine (JEFFAMINE.RTM. EDR-148 amine) and tetraethylene glycol diamine (JEFFAMINE.RTM. 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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S. Iwabuchi et al., "Darstellung und Eigenschaften von Copolyamiden mit Oxyethylenegruppen in definierter Sequenz", Macromol. Chem., vol. 183 (1982), pp. 1427-1433.
J. R. Flesher, Jr., "Polyether Block Amide: High-Performance TPE", Modern Plastics, Sep., 1987, pp. 100-110.
Speranza George P.
Su Wei-Yang
Anderson Harold D.
Mossman David L.
Park Jack H.
Priem Kenneth R.
Texaco Chemical Company
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