Method For Manufacturing Thermoplastic Polymer Particles
US-2020316819-A1 · Oct 8, 2020 · US
Thermoplastic polymer particles having low impurity content
US11001677B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11001677-B2 |
| Application number | US-201816491368-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2018 |
| Priority date | Mar 9, 2017 |
| Publication date | May 11, 2021 |
| Grant date | May 11, 2021 |
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- Title
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Abstract
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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.
First claim
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The invention claimed is: 1. Thermoplastic polymer particles formed from a thermoplastic polymer, wherein the thermoplastic polymer particles have an aspect ratio of 1.00 or more and less than 1.05 calculated by Formula 1 below and a roundness of 0.95 to 1.00 calculated by Formula 2 below: Aspect ratio=major axis/minor axis, Formula 1 Roundness=4×area/(Π×major axis{circumflex over ( )}2), Formula 2 wherein an impurity content of the thermoplastic polymer particles is 50 ppm or less. 2. The thermoplastic polymer particles according to claim 1 , wherein the thermoplastic polymer particles are formed as a continuous matrix phase from the thermoplastic polymer. 3. The thermoplastic polymer particles according to claim 1 , wherein the thermoplastic polymer particles have a peak of cold crystallization temperature (T cc ) at a temperature between a glass transition temperature (T g ) and a melting point (T m ) in a differential scanning calorimetry (DSC) curve derived from temperature rise analysis of 10° C./min by the DSC. 4. The thermoplastic polymer particles according to claim 1 , wherein the thermoplastic polymer is at least one polymer selected from the group consisting of polylactic acid (PLA), thermoplastic polyurethane (TPU), polyethylene (PE), polypropylene (PP), polyether sulfone (PES), poly(methyl methacrylate)(PMMA), and ethylene vinyl-alcohol copolymer (EVOH). 5. The thermoplastic polymer particles according to claim 1 , wherein a particle diameter of the thermoplastic polymer particles is 1 to 1000 μm.
Assignees
Inventors
Classifications
Polyurethanes · CPC title
Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C08L67/06 takes precedence) · CPC title
Polypropene · CPC title
Ethylene vinyl acetate copolymers · CPC title
Polyethylene · CPC title
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- What does patent US11001677B2 cover?
- 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) …
- Who is the assignee on this patent?
- Lg Hausys Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08J3/122. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 11 2021 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).