Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1998-12-21
2000-06-13
Hampton-Hightower, P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528310, 528312, 528315, 528322, 528323, 528324, 528335, 528336, C08G 6928
Patent
active
060751177
ABSTRACT:
A process for the hydrolysis of a dinitrile (e.g., adiponitrile) utilizing a dicarboxylic acid (e.g., adipic acid) as the sole catalyst followed by addition of a diamine (e.g., hexamethylenediamine) and heating to produce polymerization. Such a process is particularly usefull in the production of nylon 6,6 having a low BHMT content and improved melt stability.
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Hayes Richard Allen
Marks David Neil
Van Eijndhoven Maria
E.I. DuPont de Nemours & Company
Hampton-Hightower P.
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