公开(公告)号：US3893811A

公开(公告)日：1975-07-08

申请号：US35227373

申请日：1973-04-18

Applicant: VALSPAR CORP

Inventor： GOOD ADRIAN J ,  KUREK THADDEUS P

IPC: B01F7/16 ,  B01J19/00 ,  B01J19/18 ,  C08F2/00 ,  C08G73/10 ,  C08F1/98

CPC classification number: B01J19/0006 ,  B01F7/1665 ,  B01J19/18 ,  B01J2219/00094 ,  B01J2219/00168 ,  B01J2219/185 ,  C08G73/1028 ,  C08G73/1032

Abstract: This invention relates to an improved apparatus for producing polyamide esters at a given reaction location by providing a substantially anhydrous solvent, an aromatic tetracarboxylic dianhydride which is added in excess of its solubility rate within the organic solvent and immediately following is added a quantity of aromatic diamine to produce a polyamide ester precursor which has a greater solubility rate within the organic solvent than the dianhydride; an irreversible formation of aromatic anhydride precipitates is thereby prevented. The reaction mass is continuously monitored for viscosity and temperature, and the viscosity of the reaction mass approaches the order of 1,000,000 centipoises. After formation of the polyamide precursor ester, the precursor is then treated with additional aromatic diamine to form a polymer of controlled imidization, molecular weight and molecular distribution, which may thereafter be treated with ammonium hydroxide and other material to render the product water soluble and therefore storable and more advantageous to use.

Abstract translation: 本发明涉及一种通过提供基本上无水的溶剂，芳族四羧酸二酐在特定反应位置制备聚酰胺酯的改进装置，该芳族四羧酸二酐加入超过其在有机溶剂内的溶解度并立即加入一定量的芳族二胺 以产生在有机溶剂中比二酸酐具有更大溶解度的聚酰胺酯前体; 由此防止了芳香族酐沉淀物的不可逆形成。 连续监测反应物料的粘度和温度，反应物料的粘度接近1,000,000厘泊。 在形成聚酰胺前体酯后，用另外的芳族二胺处理前体以形成受控酰亚胺化，分子量和分子量分布的聚合物，其后可用氢氧化铵和其它材料处理以使产物水溶，因此 可存储和更有利于使用。