专利名称：Crystallized semiaromatic polyamides having
high Tg and Tm less than 290 degree C.from hindered aromatic diamine andbranched chain aliphatic diamine
发明人：Pascal Barthelemy申请号：US07/366472申请日：19890615公开号：US04937322A公开日：19900626
摘要：Crystallized semiaromatic copolyamides having glass transition temperatures,Tg, greater than 142° C., melting points, Tm, less than 290° C. and improved
thermomechanical properties, well adopted for the production of a wide variety of usefulshaped articles, contain specified amounts of terephthalic acid, 2-methylpentamethylenediamine and hindered aromatic diamine recurring structural units.
申请人：RHONE-POULENC CHIMIE
代理机构：Burns, Doane, Swecker & Mathis
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