基本信息:
- 专利标题： METHOD FOR MANUFACTURING LOW-MOLECULAR-WEIGHT POLYTETRAFLUOROETHYLENE
- 申请号：US17788721 申请日：2020-12-21
- 公开(公告)号：US20230032788A1 公开(公告)日：2023-02-02
- 发明人： Vito Tortelli , Cristiano Monzani , Emanuela Antenucci , Eliana Ieva
- 申请人： SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
- 申请人地址： IT Bollate (Milano)
- 专利权人： SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
- 当前专利权人： SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
- 当前专利权人地址： IT Bollate (Milano)
- 优先权： EP19219405.8 20191223
- 国际申请： PCT/EP2020/087391 WO 20201221
- 主分类号： C08F114/26
- IPC分类号： C08F114/26 ; C08L27/18 ; C08J3/28
摘要：
The invention relates to a method for manufacturing low-molecular-weight polytetrafluoroethylene, comprising: a) a first step of mixing high-molecular-weight polytetrafluoroethylene with at least one additive selected from the group consisting of ethers having formula R1—O—R2, wherein R1 and R2 are independently selected among C1-C10 straight or branched aliphatic group, C4-C10 alicyclic or heterocyclic groups, C5-C10 aromatic or heteroaromatic groups; (per)fluorinated vinyl ethers; (per)fluorinated olefins; and optionally substituted aromatic hydrocarbons, and b) a second step of irradiating the so obtained mixture with ionizing radiation, said second step b) being carried out substantially in the absence of oxygen.
IPC结构图谱:
| C | 化学；冶金 |
| --C08 | 有机高分子化合物；其制备或化学加工；以其为基料的组合物 |
| ----C08F | 仅用碳—碳不饱和键反应得到的高分子化合物 |
| ------C08F114/00 | 具有1个或更多的不饱和脂族基化合物的均聚物，每个不饱和脂族基只有1个碳—碳双键，并且至少有1个是以卤素为终端 |
| --------C08F114/18 | .含氟单体 |
| ----------C08F114/26 | ..四氟乙烯 |