Thermoplastic polyurethane particles having low impurity content and manufacturing method therefor
US11118019B2 · kind B2 · utility
0Cited by
8References
6Claims
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Key dates
| Filing date | Mar 9, 2018 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Aug 3, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/30
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides thermoplastic polyurethane particles, which are formed in a continuous matrix phase from a thermoplastic polyurethane resin and have a particle diameter of 200-500 μm. In a differential scanning calorimetry (DSC) curve of the thermoplastic polyurethane particles, derived from the analysis of a temperature rise of 10° C./min by DSC, a peak of the cold crystallization temperature (Tcc) is shown at a temperature between the glass transition temperature (Tg) and the melting point (Tm). The thermoplastic polyurethane particles have a compression degree of 10-20%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.