公开(公告)号：US20170107316A1

公开(公告)日：2017-04-20

申请号：US15101710

申请日：2014-12-04

Applicant: Braskem S.A.

Inventor： Rodrigo Brambilla ,  Marcia Silva Lacerda Miranda ,  Ana Cristina Fontes Moreira ,  Etienne Marcos de Almeida Rocha ,  Maria Angelica Cardoso Gollmann

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C08F4/02 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F210/02 ,  C08F10/00 ,  C08F4/65925 ,  C08F210/14 ,  C08F2500/03

Abstract: The present invention pertains to a metallocene catalyst based on a transition metal of groups 4 or 5 of the periodic table prepared by the immobilization of a metallocene complex on a support modified with hybrid soluble silica, prepared by a non-hydrolytic sol-gel process. There is also described a process for preparing said catalyst.The supported metallocene catalyst of the present invention has the advantages of high catalytic activity, morphology, besides the fact of producing copolymers of ethylene with alpha-olefins having molecular behavior that will bring benefits in mechanical properties, such as resistance to tearing, piercing and impact, as well as improved optical and weldability properties.

公开(公告)号：US09822199B2

公开(公告)日：2017-11-21

申请号：US15101710

申请日：2014-12-04

Applicant: Braskem S.A.

Inventor： Rodrigo Brambilla ,  Marcia Silva Lacerda Miranda ,  Ana Cristina Fontes Moreira ,  Etienne Marcos de Almeida Rocha ,  Maria Angelica Cardoso Gollmann

IPC: C08F4/02 ,  C08F4/6592 ,  C08F210/02 ,  C08F210/16

CPC classification number: C08F210/16 ,  C08F4/02 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F210/02 ,  C08F10/00 ,  C08F4/65925 ,  C08F210/14 ,  C08F2500/03

Abstract: The present invention pertains to a metallocene catalyst based on a transition metal of groups 4 or 5 of the periodic table prepared by the immobilization of a metallocene complex on a support modified with hybrid soluble silica, prepared by a non-hydrolytic sol-gel process. There is also described a process for preparing said catalyst.The supported metallocene catalyst of the present invention has the advantages of high catalytic activity, morphology, besides the fact of producing copolymers of ethylene with alpha-olefins having molecular behavior that will bring benefits in mechanical properties, such as resistance to tearing, piercing and impact, as well as improved optical and weldability properties.