公开(公告)号：US4632912A

公开(公告)日：1986-12-30

申请号：US807419

申请日：1985-12-10

Applicant: Stephen A. Bedell ,  William R. Howell, Jr. ,  William M. Coleman, III

Inventor： Stephen A. Bedell ,  William R. Howell, Jr. ,  William M. Coleman, III

IPC: C08F4/62 ,  C08F10/00 ,  C08F4/64 ,  C08F4/68

CPC classification number: C08F10/00

Abstract: Ziegler-Natta catalysts which are polymer supported compounds or complexes of elements of the d-block transition metals, lanthanide or actinide series are disclosed. An example of the polymer support is chloromethylated polystyrene-divinyl benzene copolymer covalently bonded to catechol. An example of the compound or complex of an element of the transition metal, lanthanide or actinide series is that which results when catechol which is covalently bonded to the polymer is contacted with titanium tetraisopropoxide. These catalysts are useful in preparing polymers with reduced halide content which reduces corrosion in polymer processing equipment.

Abstract translation: 公开了齐格勒 - 纳塔催化剂，其是聚合物负载的化合物或d-嵌段过渡金属元素的络合物，镧系元素或锕系元素。 聚合物载体的实例是共价键合到儿茶酚上的氯甲基化聚苯乙烯 - 二乙烯基苯共聚物。 过渡金属，镧系元素或锕系元素的元素的化合物或络合物的实例是当与聚合物共价键合的儿茶酚与四异丙醇钛接触时产生的。 这些催化剂可用于制备具有降低的卤化物含量的聚合物，其减少聚合物加工设备中的腐蚀。

公开(公告)号：US20180016390A1

公开(公告)日：2018-01-18

申请号：US15650244

申请日：2017-07-14

Applicant: Karen L. Wooley ,  Simcha E. Felder ,  Brooke A. Versaw ,  Ashlee A. Jahnke ,  Lauren A. Link ,  Mark W. Wooley ,  Charles A. Hinton ,  William R. Howell, JR.

Inventor： Karen L. Wooley ,  Simcha E. Felder ,  Brooke A. Versaw ,  Ashlee A. Jahnke ,  Lauren A. Link ,  Mark W. Wooley ,  Charles A. Hinton ,  William R. Howell, JR.

IPC: C08G64/02 ,  C12P19/04

CPC classification number: C08G64/0216 ,  C08G75/02 ,  C08G75/045 ,  C08G75/12 ,  C12P19/04

Abstract: Degradable polycarbonates network based bulk materials are provided. The bulk materials of the present disclosure may be produced having a wide range of tunable mechanical, physical, and thermal properties and are hydrolytically degradable. The bulk materials of the present disclosure may be suitable for the manufacture of a variety of sport fishing equipment or other equipment for water use or that may benefit from hydrolytic degradation in the environment.

公开(公告)号：US4623707A

公开(公告)日：1986-11-18

申请号：US807428

申请日：1985-12-10

Applicant: Stephen A. Bedell ,  William M. Coleman, III ,  William R. Howell, Jr.

Inventor： Stephen A. Bedell ,  William M. Coleman, III ,  William R. Howell, Jr.

IPC: C08F10/00 ,  C08F4/02

CPC classification number: C08F10/00 ,  Y10S526/904

Abstract: .alpha.-Olefins are polymerized in the presence of Ziegler-Natta catalysts which are polymer supported compounds or complexes of elements of the d-block transition metals, lanthanide or actinide series. An example of the polymer support is chloromethylated polystyrene-divinyl benzene copolymer covalently bonded to catechol. An example of the compound or complex of an element of the transition metal, lanthanide or actinide series is that which results when catechol which is covalently bonded to the polymer is contacted with titanium tetraisopropoxide.

Abstract translation: α-烯烃在齐格勒 - 纳塔催化剂存在下聚合，齐格勒 - 纳塔催化剂是聚合物负载的化合物或d-嵌段过渡金属，镧系元素或锕系元素的元素的络合物。 聚合物载体的实例是共价键合到儿茶酚上的氯甲基化聚苯乙烯 - 二乙烯基苯共聚物。 过渡金属，镧系元素或锕系元素的元素的化合物或络合物的实例是当与聚合物共价键合的儿茶酚与四异丙醇钛接触时产生的。