公开(公告)号：US06462137B2

公开(公告)日：2002-10-08

申请号：US09982255

申请日：2001-10-18

Applicant: Yang Li ,  Hongde Xu ,  Yurong Wang ,  Dingyi Hong ,  Mingchu Gu ,  Mei Wang ,  Zhanxia Lü ,  Aili Xu

Inventor： Yang Li ,  Hongde Xu ,  Yurong Wang ,  Dingyi Hong ,  Mingchu Gu ,  Mei Wang ,  Zhanxia Lü ,  Aili Xu

IPC: C08F29704

CPC classification number: C08F297/042 ,  Y10S525/901

Abstract: The present invention relates to star-block interpolymers having the following structure (X-Y)n-C, wherein X represents a random copolymer block derived from conjugated diene and monovinyl aromatic monomer; Y represents a polyconjugated diene block; C represents a residue derived from a multifunctional lithium based initiator; and n represents the functionality of the initiator and has a value of not less than 3; and preparation of the same. The star-block interpolymers according to the present invention have in the same molecule both a random copolymer block derived from conjugated diene and monovinyl aromatic monomer and a rubber block selected from the group consisting of a homopolymer block derived from conjugated diene, a tapered copolymer block derived from conjugated dienes, a random copolymer block derived from conjugated dienes and combinations thereof, and hence possess excellent properties of the both kinds of rubbers, and can be used widely as elastomeric materials.

公开(公告)号：US20080091051A1

公开(公告)日：2008-04-17

申请号：US10573697

申请日：2004-09-24

Applicant: Dingyi Hong ,  Jidong Zhou ,  Jinlai Qin

Inventor： Dingyi Hong ,  Jidong Zhou ,  Jinlai Qin

IPC: C07C39/16

CPC classification number: C07C37/74 ,  C07C37/20 ,  C07C37/84 ,  C07C39/16

Abstract: The present invention discloses a method for preparing bisphenol A, comprising the following steps: transferring phenol and acetone into a reaction zone charged with condensation catalyst, obtaining a stream containing bisphenol A after reaction; transferring the obtained stream containing bisphenol A into a rectification zone, obtaining a product fraction primarily containing bisphenol A and phenol; and transferring the product fraction primarily containing bisphenol A and phenol into a crystallization zone to obtain a bisphenol A product; wherein a water-depleted fraction primarily containing phenol, bisphenol A and acetone is obtained from the rectification zone, and said water-depleted fraction is cooled and returned as a cycled stream to the reaction zone. Through cycling the water-depleted fraction to the reaction zone, the water content within the reaction zone can be reduced, the catalytic activity can be maintained and the reaction temperature rise can be controlled, thus the conversion of acetone and the selectivity of reaction can be improved accordingly.

Abstract translation: 本发明公开了一种制备双酚A的方法，包括以下步骤：将苯酚和丙酮转移到装有缩合催化剂的反应区中，反应后得到含有双酚A的物流; 将得到的含有双酚A的料流转移到精馏区中，得到主要含有双酚A和苯酚的产物馏分; 并将主要含有双酚A和苯酚的产物级分转移到结晶区中以获得双酚A产物; 其中从精馏区获得主要含有苯酚，双酚A和丙酮的贫水部分，并将所述贫水部分冷却并作为循环流返回到反应区。 通过将含水部分循环到反应区，可以降低反应区内的含水量，保持催化活性，控制反应温度升高，从而使丙酮的转化率和反应选择性可以为 相应改善。

公开(公告)号：US06777499B2

公开(公告)日：2004-08-17

申请号：US10152184

申请日：2002-05-20

Applicant: Yang Li ,  Dingyi Hong ,  Mingchu Gu ,  Jinzong Yang ,  Yurong Wang ,  Hongde Xu ,  Xingjun Lu ,  Li Yang ,  Jian Ding ,  Zhanxia Lv ,  Yongjun Lu ,  Yuchun Song

Inventor： Yang Li ,  Dingyi Hong ,  Mingchu Gu ,  Jinzong Yang ,  Yurong Wang ,  Hongde Xu ,  Xingjun Lu ,  Li Yang ,  Jian Ding ,  Zhanxia Lv ,  Yongjun Lu ,  Yuchun Song

IPC: C08F29300

CPC classification number: C08F297/04 ,  C08F297/02

Abstract: The present invention relates to multiblock interpolymers having the following symmetric structures and processes for their preparation: Y-X-Y, wherein Y represents a block of a random copolymer of conjugated diene and monovinyl aromatic monomer; and X represents a block of butadiene homopolymer, a block of isoprene homopolymer, or a block of butadiene/isoprene copolymer, and processes for the preparation thereof. The present multiblock interpolymers have in the same molecule both a rubber block of random copolymer of conjugated diene and monovinyl aromatic monomer and a rubber block selected from blocks of butadiene homopolymer, isoprene homopolymer and butadiene/isoprene copolymers, and hence possess excellent properties of the both two kinds of rubbers, and can be used widely as integrated rubber materials with excellent property balance, the present processes can simply prepare the above integrated rubber material in situ in a single reactor.

Abstract translation: 本发明涉及具有以下对称结构的多嵌段互聚物及其制备方法：Y-X-Y，其中Y表示共轭二烯和单乙烯基芳族单体的无规共聚物的嵌段; X表示丁二烯均聚物嵌段，异戊二烯均聚物嵌段或丁二烯/异戊二烯共聚物嵌段，以及其制备方法。 本发明的多嵌段互聚物在同一分子中具有共轭二烯和单乙烯基芳族单体的无规共聚物的橡胶嵌段和选自丁二烯均聚物，异戊二烯均聚物和丁二烯/异戊二烯共聚物的嵌段的橡胶嵌段，因此具有优异的性能 两种橡胶，可广泛用作具有优异性能平衡的综合橡胶材料，本方法可以简单地在单个反应器中原位制备上述一体化橡胶材料。

公开(公告)号：US06372853B1

公开(公告)日：2002-04-16

申请号：US09627105

申请日：2000-07-27

Applicant: Yang Li ,  Dingyi Hong ,  Mingchu Gu ,  Jinzong Yang ,  Yurong Wang ,  Hongde Xu ,  Xingjun Lu ,  Zhanxia Lv ,  Yongjun Lu ,  Yuchun Song

Inventor： Yang Li ,  Dingyi Hong ,  Mingchu Gu ,  Jinzong Yang ,  Yurong Wang ,  Hongde Xu ,  Xingjun Lu ,  Zhanxia Lv ,  Yongjun Lu ,  Yuchun Song

IPC: C08F29704

CPC classification number: C08F297/046

Abstract: The present invention relates to butadiene/isoprene/monovinyl aromatic monomer heptablock copolymers having the following symmetric structure: Z-XZ-X-Y-X-XZ-Z wherein Z represents a polymer block of monovinyl aromatic monomer, X and Y, being different from each other, represent polymer blocks of butadiene or isoprene, XZ represents a tapered copolymer block of monovinyl aromatic monomer and butadiene or isoprene, and wherein the content of the recurring units derived from monovinyl aromatic monomer is 10 to 50 percent by weight, the content of the recurring units derived from butadiene is 10-75 percent by weight and the content of the recurring units derived from isoprene is 10-75 percent by weight, all based on the weight of the block copolymer, and methods for the preparation thereof.

Abstract translation: 本发明涉及具有以下对称结构的丁二烯/异戊二烯/单乙烯基芳族单体七嵌段共聚物：其中Z表示单乙烯基芳族单体的聚合物嵌段，X和Y彼此不同，表示丁二烯或异戊二烯的聚合物嵌段XZ 表示单乙烯基芳族单体和丁二烯或异戊二烯的渐缩共聚物嵌段，其中衍生自单乙烯基芳族单体的重复单元的含量为10〜50重量％，衍生自丁二烯的重复单元的含量为10-75％ 重量，衍生自异戊二烯的重复单元的含量为10-75重量％，均基于嵌段共聚物的重量及其制备方法。