Method of producing polyamide fine particles, and polyamide fine particles
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United States of America Patent
Stats
-
Nov 7, 2023
Grant Date -
Feb 2, 2023
app pub date -
Sep 28, 2022
filing date -
May 12, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method produces polyamide fine particles by polymerizing a polyamide monomer (A) in the presence of a polymer (B) at a temperature equal to or higher than the crystallization temperature of a polyamide to be obtained, wherein the polyamide monomer (A) and the polymer (B) are homogeneously dissolved at the start of polymerization, and polyamide fine particles are precipitated after the polymerization. Polyamide fine particles have a number average particle size of 0.1 to 100 μm, a sphericity of 90 or more, a particle size distribution index of 3.0 or less, a linseed oil absorption of 100 mL/100 g or less, and a crystallization temperature of 150° C. or more. In particular, a polyamide having a high crystallization temperature includes fine particles having a smooth surface, a narrow particle size distribution, and high sphericity.
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International Classification(s)
- 2022 Application Filing Year
- C08J Class
- 2006 Applications Filed
- 320 Patents Issued To-Date
- 15.96 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08J Class
- 0 % this patent is cited more than
- 2 Age
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