Polymers, the process for the synthesis thereof and compositions comprising same
US-9217056-B2 · Dec 22, 2015 · US
Method for the preparation of modified poly(alkylene terephthalate) employing in situ titanium-containing catalyst
US9109110B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9109110-B2 |
| Application number | US-201313950900-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 25, 2013 |
| Priority date | Jul 30, 2012 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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A process of preparing a modified polyalkylene terephthalate by melt polycondensation 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, boron-containing compounds, and combinations thereof.
First claim
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What is claimed is: 1. A process of preparing a modified polyalkylene terephthalate from recycled polyethylene terephthalate, the process comprising: forming a catalyst consisting of the reaction product of tetra(C 1 -C 8 alkyl) titanate and phosphoric acid, wherein the molar ratio of the phosphoric acid to the tetra(C 1 -C 8 alkyl) titanate is from 0.05:1 to less than or equal to 2:1; depolymerizing the polyethylene terephthalate by combining the polyethylene terephthalate, i…
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- C08G63/85Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9109110B2 cover?
- A process of preparing a modified polyalkylene terephthalate by melt polycondensation 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, boron-containing compounds, and combi…
- Who is the assignee on this patent?
- Alidedeoglu Husnu Alp, Kannan Ganesh, Ding Tianhua, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C08G63/85. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).