Polytrimethylene terephthalate (PTT) derived from polyethylene terephthalate (PET) and containing PET residues
US7902264B2 · kind B2 · utility
16Cited by
29References
35Claims
0Family size
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Key dates
| Filing date | Dec 27, 2006 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Dec 27, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition comprising a polytrimethylene terephthalate random copolymer that (1) is derived from polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers and (2) contains at least one residue derived from the polyethylene terephthalate component. Methods for making such copolymers and articles made from such copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.