Polyolefin resin powder suitable for selective laser sintering and its preparation method

US10920025B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Jianye LIU · Beijing, CN
• Shijun Zhang · Beijing, CN
• Liqiu CHU · Beijing, CN
• Liying Zhang · Singapore, SG
• Hao ZOU · Nanhu, CN
• Mu DONG · Beijing, CN
• Dali GAO · Beijing, CN
• Baige CHOU · Beijing, CN
• Jingbo Shao · Beijing, CN
• Yun LYU · Beijing, CN
• Hua Yin · Beijing, CN
• Qingquan Yang · Beijing, CN
• Jie Li · Shanghai, CN
• Yiqing BAI · Beijing, CN
• Yihui Tom Xu · Shanghai, CN

Key dates

• Filing date: Apr 15, 2016
• Grant date: Feb 16, 2021
• Expiry date: Jan 17, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/2206
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method for preparing a polyolefin resin powder has the steps of The difference between the solubility parameters of the organic solvent and of the polyolefin resin is within 0-20% of the solubility parameter of the polyolefin resin.The polyolefin resin powder obtained according to this method has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution.