公开(公告)号：US5939522A

公开(公告)日：1999-08-17

申请号：US924276

申请日：1997-09-05

申请人： Grigory Ya. Mazo ,  Jacob Mazo ,  Barney Vallino ,  Robert J. Ross

发明人： Grigory Ya. Mazo ,  Jacob Mazo ,  Barney Vallino ,  Robert J. Ross

IPC分类号： C08G73/10

CPC分类号： C08G73/1092 ,  Y02P20/582

摘要： A method for the preparation of a desired molecular weight polysuccinimide by the catalytic polymerization of aspartic acid in the presence of a thioether solvent. Polysuccinimide of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading and relatively low temperatures.

摘要翻译： 一种在硫醚溶剂存在下通过天冬氨酸的催化聚合制备所需分子量聚琥珀酰亚胺的方法。 相对高的重均分子量和高纯度的聚琥珀酰亚胺可以以相当高的产率生产，同时采用相对低的催化剂负载量和较低的温度。

公开(公告)号：US5907057A

公开(公告)日：1999-05-25

申请号：US84626

申请日：1998-05-26

申请人： Grigory Ya. Mazo ,  Jacob Mazo ,  Barney Vallino, Jr. ,  Robert J. Ross

发明人： Grigory Ya. Mazo ,  Jacob Mazo ,  Barney Vallino, Jr. ,  Robert J. Ross

IPC分类号： C07C227/08 ,  C07C229/24 ,  C07C227/00 ,  C07C229/00

CPC分类号： C07C227/08

摘要： The present invention is directed to a method for the production of D,L-aspartic acid. The method comprises reacting an unsaturated dicarboxylic acid or anhydride, such as, maleic acid, fumaric acid, maleic anhydride, or mixtures thereof, with excess aqueous ammonia at an elevated temperature and pressure for a time sufficient to produce diammonium D,L-aspartate. The produced diammonium D,L-aspartate is then neutralized to D,L-aspartic acid. Excess unreacted ammonia and various by-products may be recycled and re-used in the method, thereby minimizing waste and reducing cost. The produced D,L-aspartic acid may be subsequently used to make polyaspartic acid.

公开(公告)号：US06399715B2

公开(公告)日：2002-06-04

申请号：US09799230

申请日：2001-03-05

申请人： Grigory Ya. Mazo ,  Robert J. Ross ,  James F. Kneller ,  Jacob Mazo

发明人： Grigory Ya. Mazo ,  Robert J. Ross ,  James F. Kneller ,  Jacob Mazo

IPC分类号： C08G7310

CPC分类号： C08G73/1092

摘要： A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.

摘要翻译： 一种通过在环状碳酸酯溶剂存在下天冬氨酸与所选择的多官能单体的催化共聚合制备琥珀酰亚胺共聚物的方法。 相对高的重均分子量和高纯度的琥珀酰亚胺共聚物可以以相当高的产率生产，同时采用相对较低的催化剂负载量。

公开(公告)号：US06197897B1

公开(公告)日：2001-03-06

申请号：US09357682

申请日：1999-07-20

申请人： Grigory Ya. Mazo ,  Robert J. Ross ,  James F. Kneller ,  Jacob Mazo

发明人： Grigory Ya. Mazo ,  Robert J. Ross ,  James F. Kneller ,  Jacob Mazo

IPC分类号： C08G7310

CPC分类号： C08G73/1092

摘要： A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.

摘要翻译： 一种通过在环状碳酸酯溶剂存在下天冬氨酸与所选择的多官能单体的催化共聚合制备琥珀酰亚胺共聚物的方法。 相对高的重均分子量和高纯度的琥珀酰亚胺共聚物可以以相当高的产率生产，同时采用相对较低的催化剂负载量。

公开(公告)号：US5939517A

公开(公告)日：1999-08-17

申请号：US6255

申请日：1998-01-13

申请人： Grigory Ya. Mazo ,  Robert J. Ross ,  James F. Kneller ,  Jacob Mazo

发明人： Grigory Ya. Mazo ,  Robert J. Ross ,  James F. Kneller ,  Jacob Mazo

IPC分类号： C08G73/10 ,  C08G73/14 ,  C08G73/16

CPC分类号： C08G73/1092

摘要： A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.

摘要翻译： 一种通过在环状碳酸酯溶剂存在下天冬氨酸与所选择的多官能单体的催化共聚合制备琥珀酰亚胺共聚物的方法。 相对高的重均分子量和高纯度的琥珀酰亚胺共聚物可以以相当高的产率生产，同时采用相对较低的催化剂负载量。

公开(公告)号：US5939518A

公开(公告)日：1999-08-17

申请号：US84822

申请日：1998-05-26

申请人： Grigory Ya. Mazo ,  Daniel A. Batzel ,  James F. Kneller ,  Jacob Mazo

发明人： Grigory Ya. Mazo ,  Daniel A. Batzel ,  James F. Kneller ,  Jacob Mazo

IPC分类号： C08G73/10

CPC分类号： C08G73/1092

摘要： A method for the preparation of a desired molecular weight polysuccinimide by the catalytic polymerization of aspartic acid in the presence of a cyclic carbonate solvent. Polysuccinimide of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.

摘要翻译： 一种在环状碳酸酯溶剂存在下通过天冬氨酸的催化聚合制备所需分子量聚琥珀酰亚胺的方法。 相对较高的重均分子量和高纯度的聚琥珀酰亚胺可以以较高的产率生产，同时采用较低的催化剂负载量。

公开(公告)号：US6005069A

公开(公告)日：1999-12-21

申请号：US768996

申请日：1996-12-18

申请人： Grigory Ya. Mazo ,  Jacob Mazo

发明人： Grigory Ya. Mazo ,  Jacob Mazo

IPC分类号： C07D207/40 ,  C07D207/404 ,  C08G69/10 ,  C08G73/06 ,  C08G73/10

CPC分类号： C07D207/404 ,  C08G69/10 ,  C08G73/0611

摘要： Polysuccinimide of varying molecular weight has been prepared in a solvent system by heat polymerization of aspartic acid. The solvent system includes a sulfur oxygen acid and a sulfur oxygen acid salt. In a preferred embodiment, aspartic acid is polymerized in a liquid solvent reaction mixture at a temperature in the range of about 110.degree. C. to about 320.degree. C.

摘要翻译： 通过天冬氨酸的热聚合在溶剂体系中制备了不同分子量的聚琥珀酰亚胺。 溶剂体系包括硫氧酸和硫氧酸盐。 在优选的实施方案中，天冬氨酸在液体溶剂反应混合物中在约110℃至约320℃的温度下聚合。