Thermoplastic polymer particles having low impurity content
US11001677B2 · kind B2 · utility
1Cited by
8References
5Claims
0Family size
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Key dates
| Filing date | Mar 9, 2018 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Mar 9, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/30
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided are thermoplastic polymer particles having an aspect ratio of 1.00 or more and less than 1.05, and a roundness of 0.95 to 1.00. The thermoplastic polymer particles are formed from a thermoplastic polymer resin in a continuous matrix phase. The thermoplastic polymer particles show a peak cold crystallization temperature (Tcc) at a temperature between a glass transition temperature (Tg) and the melting point (Tm) in a differential scanning calorimetry (DSC) curve which is derived from temperature rise analysis at 10° C./min by differential scanning calorimetry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.