Invention Grant
- Patent Title: Process for the preparation of modified poly(alkylene terephthalate) employing an in-situ titanium-containing catalyst
- Patent Title (中): 使用原位含钛催化剂制备改性聚对苯二甲酸亚烷基酯的方法
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Application No.: US14787870Application Date: 2014-07-25
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Publication No.: US09487622B2Publication Date: 2016-11-08
- Inventor: Husnu Alp Alidedeoglu , Tianhua Ding , Ganesh Kannan
- Applicant: SABIC Global Technologies B.V.
- Applicant Address: NL
- Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee Address: NL
- Agency: Cantor Colburn LLP
- International Application: PCT/US2014/048116 WO 20140725
- International Announcement: WO2015/013572 WO 20150129
- Main IPC: C08G63/85
- IPC: C08G63/85 ; C08J11/24 ; C08G63/183 ; C08G63/80 ; C08G63/78
Abstract:
Disclosed is an improved process for preparing a modified polyalkylene terephthalate by melt polycondensation followed optionally by solid state condensation comprising reacting an alkylene diol and polyethylene terephthalate, wherein polymerization occurs in the presence of a catalyst complex formed by reaction of tetra(alkyl) titanate and a compound selected from phosphorus-containing compounds, nitrogen-containing compounds, boroncontaining compounds, and combinations thereof.
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