CONTINUOUS PROCESS FOR THE PRODUCTION OF POLYAMIDES
摘要
<p>In a two-step precondensate process for preparing polyamides diamines are reacted with dicarboxylic acid dihalides in a polar, non-basic, inert organic liquid medium under conditions such that a condensation product having a low degree of polymerization is formed. The resulting condensation then is contacted with an aqueous solution of a water-soluble acid acceptor by continuously feeding the components into a reactor system having a total residence time from about 2 seconds to about 2 minutes, and having a Peclet number greater than about 3.5 to form a polyamide product having a high degree of polymerization.</p>
申请公布号
WO2004104069(A1)
申请公布日期
2004.12.02
申请号
WO2004US15069
申请日期
2004.05.12
申请人
E.I. DUPONT DE NEMOURS AND COMPANY;ETCHELLS, ARTHUR, WILLIAM, III;MALLON, FREDERICK, K.
发明人
ETCHELLS, ARTHUR, WILLIAM, III;MALLON, FREDERICK, K.