US2021061961A1PendingUtilityA1

Composition for Preparing Polyamide Powders

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Assignee: TAIWAN GREEN POINT ENTPR COPriority: Jul 6, 2018Filed: Nov 13, 2020Published: Mar 4, 2021
Est. expiryJul 6, 2038(~12 yrs left)· nominal 20-yr term from priority
Inventors:Chia-Hung YangYu-Pao HuangHsing-Fu YehYao-Tang KeFeng ChenYung-Chih ChenYi-Chung Su
C08J 3/11C08K 2003/2241C08K 3/36C08K 3/22C08J 2377/02C08J 3/14C08J 3/215C08J 2377/06C08J 3/096
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Claims

Abstract

A composition for preparing polyamide powders, includes polyamide granules, a nucleating agent and an organic solvent having a boiling point ranging from 190° C. to 209° C. The weight ratio of the polyamide granules to the organic solvent ranges from 0.11 to saturation solubility of the polyamide granules is the organic solvent, and the weight ratio of the polyamide granules to the nucleating agent is 100:1.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A composition for preparing polyamide powders, comprising:
 polyamide granules, a nucleating agent and an organic solvent having a boiling point ranging from 190° C. to 209° C.;   wherein the weight ratio of the polyamide granules to the organic solvent ranges from 0.11 to saturation solubility of the polyamide granules in the organic solvent, and the weight ratio of the polyamide granules to the nucleating agent is 100:1.   
     
     
         2 . The composition as claimed in  claim 1 , wherein the organic solvent is N-methyl-2-pyrrolidone. 
     
     
         3 . The composition as claimed in  claim 1 , wherein the polyamide granules are selected from a group consisting of PA12 PA1012 PA11, PA1212 and combinations thereof. 
     
     
         4 . The composition as claimed in  claim 3 , wherein the polyamide granules are PA12, and the weight ratio of PA12 to the organic solvent ranges from 0.125 to 0.2. 
     
     
         5 . The composition as claimed in  claim 3 , wherein the polyamide granules are PA1012, and the weight ratio of PA1012 to the organic solvent ranges from 0.11 to 0.17. 
     
     
         6 . The composition as claimed in  claim 1 , wherein the nucleating agent is SiO 2 . 
     
     
         7 . The composition as claimed in  claim 1 , wherein the nucleating agent is the combination of SiO 2  and TiO 2 , and TiO 2  is present in an amount equal to or higher than that of SiO 2 . 
     
     
         8 . The composition as claimed in  claim 7 , wherein TiO 2  is present in an amount ranging from 50% to 60% based on the total weight of the nucleating agent.

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