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1. 发明授权

US5245005A Process for the production of linear amorphous polyamides with excess diamine 失效
标题翻译：用过量二胺生产线型无定形聚酰胺的方法
公开(公告)号：US5245005A
公开(公告)日：1993-09-14
申请号：US866401
申请日：1992-04-10
申请人： Chris E. Schwier , Richard D. Chapman , Roger C. Ayotte
发明人： Chris E. Schwier , Richard D. Chapman , Roger C. Ayotte
IPC分类号： C08G69/28
CPC分类号： C08G69/28
摘要： A process is disclosed for the production of linear amorphous polyamides which results in polyamides having more amine endgroups than acid endgroups. It comprises condensing an aqueous solution of salts comprising at least one aromatic diacid containing from 7 to 20 carbon atoms and a greater than equimolar amount of at least one aliphatic diamine containing from 4 to 20 carbon atoms.
摘要翻译：公开了用于生产线性无定形聚酰胺的方法，其导致聚酰胺比酸端基具有更多的胺端基。其包括将包含至少一种含有7至20个碳原子的芳族二酸和大于等摩尔量的至少一种含有4至20个碳原子的脂族二胺的盐水溶液冷凝。

2. 发明授权

US4874829A Process for preparing .alpha.-methylstyrene-acrylonitrile polymers 失效
标题翻译：制备α-甲基苯乙烯 - 丙烯腈聚合物的方法
公开(公告)号：US4874829A
公开(公告)日：1989-10-17
申请号：US53222
申请日：1987-05-22
申请人： Chris E. Schwier , Wan C. Wu
发明人： Chris E. Schwier , Wan C. Wu
IPC分类号： C08F212/12 , C08F220/44
CPC分类号： C08F220/44 , C08F212/12
摘要： A method of forming polymers containing .alpha.-methylstyrene and acrylonitrile by polymerizing, preferably continuously, under off-azeotrope conditions to vastly improve rate without substantially changing the content of .alpha.-methylstyrene in the polymer being formed from that obtained under azeotrope conditions.
摘要翻译：通过在非共沸条件下连续聚合形成聚合物，形成聚合物的方法大大提高了速率，而基本上不改变在由共沸条件下得到的聚合物中α-甲基苯乙烯的含量。

3. 发明授权

US06169162A Continuous polyamidation process 有权
标题翻译：连续聚酰胺化工艺
公开(公告)号：US06169162A
公开(公告)日：2001-01-02
申请号：US09317340
申请日：1999-05-24
申请人： Gregory E. Bush , Chris E. Schwier , Robert M. Lembcke , Steven W. Cook
发明人： Gregory E. Bush , Chris E. Schwier , Robert M. Lembcke , Steven W. Cook
IPC分类号： C08G6900
CPC分类号： C08G69/04 , C08G69/28
摘要： A process for producing a polyamide from dicarboxylic acid monomer and diamine monomer comprises the steps of: (a) mixing molten dicarboxylic acid monomer and molten diamine monomer in equimolar amounts, thereby producing a molten reaction mixture; (b) flowing the reaction mixture through at least one unvented reaction vessel, the residence time of the reaction mixture in the at least one unvented reaction vessel being between about 0.01 minutes and about 30 minutes, thereby forming a first product stream that comprises polyamide and water of polymerization; and (c) flowing the first product stream through at least one vented vessel, whereby water of polymerization is removed, thereby forming a second product stream that comprises polyamide. The process can operate continuously, and there is no need to add water to the dicarboxylic acid, to the diamine, or to the reaction mixture.
摘要翻译：一种由二羧酸单体和二胺单体制备聚酰胺的方法包括以下步骤：（a）将熔融二羧酸单体和熔融二胺单体以等摩尔量混合，从而产生熔融反应混合物; （b）使反应混合物流过至少一个未经反应的反应容器，反应混合物在至少一个未通过的反应容器中的停留时间为约0.01分钟至约30分钟，从而形成第一产物流，其包含聚酰胺和聚合水; 和（c）使第一产物流通过至少一个排气容器，由此除去聚合水，从而形成包含聚酰胺的第二产物流。该方法可以连续操作，不需要向二羧酸，二胺或反应混合物中加入水。

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