公开(公告)号：US20210347938A1

公开(公告)日：2021-11-11

申请号：US17284270

申请日：2019-09-12

Applicant: SABIC Global Technologies B.V.

Inventor： Ignacio VIC FERNANDEZ

IPC: C08G64/14 ,  C08G64/30

Abstract: The present invention relates to a method for the continuous multi-stage manufacture of an end-capped polycarbonate comprising, i) preparing a monomer mixture in a monomer mixing stage by mixing a bisphenol, a diaryl carbonate and optionally a transesterification catalyst in at least one monomer mixing device, ii) preparing a carbonate oligomer in an oligomerisation stage by reacting said monomer mixture in at least one oligomerisation reactor, iii) preparing the polycarbonate in a polymerisation stage by further reacting the carbonate oligomer of the oligomerisation stage in at least one polymerisation reactor, wherein an end-capping agent different from phenol and having a single phenolic hydroxy group is added to the monomer mixture in the monomer mixing stage and/or to at least one oligomerisation reactor in the oligomerisation stage.

公开(公告)号：US20210347939A1

公开(公告)日：2021-11-11

申请号：US17284289

申请日：2019-09-12

Applicant: SABIC Global Technologies B.V.

Inventor： Ignacio VIC FERNANDEZ ,  David DEL AGUA HERNANDEZ ,  Helena VARELA RIZO

IPC: C08G64/14 ,  C08G64/30 ,  C08G64/20 ,  C08L69/00 ,  B01J19/24

Abstract: The present invention relates to an aromatic polycarbonate obtained via the melt transesterification of a diaryl carbonate, a bisphenol and an endcapping agent selected from paracumyl phenol, dicumyl phenol, p-tert-butyl phenol and mixtures of at least two of said endcapping agents, said polycarbonate having a melt volume rate of at least 20 cm3/10 min (ISO 1133, 300° C., 1.2 kg), a terminal hydroxyl group content of at most 800 ppm by weight, a Fries branching content of at most 1300 ppm by weight and a content of bulky end groups of at least 20 mol % defined as the sum of the mol % of end-groups based on said bisphenol and the mol % of end-groups based on said endcapping agent.

公开(公告)号：US20180030266A1

公开(公告)日：2018-02-01

申请号：US15553196

申请日：2016-02-25

Applicant: SABIC Global Technologies B.V.

Inventor： Helena VARELA RIZO ,  Ignacio VIC FERNANDEZ ,  David DEL AGUA HERNANDEZ

IPC: C08L69/00 ,  C09K19/38

CPC classification number: C08L69/00 ,  C08G63/64 ,  C08G81/00 ,  C08L69/005 ,  C08L77/10 ,  C08L77/12 ,  C08L2201/10 ,  C08L2203/20 ,  C08L2205/12 ,  C09K19/3809 ,  C09K19/542 ,  C08L67/02

Abstract: The disclosure concerns a polymer blend derived from transesterification of (i) 69.9 to 95 weight percent polycarbonate; and (ii) 4.9 to 30 weight percent liquid crystal polymer; in the presence of 0.01 to 0.1 weight percent catalyst; wherein the polymer is transparent.