首页>
外国专利>
Bifunctional and monofunctional perfluoropolyethers having brominated end groups and a controlled molecular weight.
Bifunctional and monofunctional perfluoropolyethers having brominated end groups and a controlled molecular weight.
展开▼
机译:具有溴端基和受控分子量的双官能和单官能全氟聚醚。
展开▼
页面导航
摘要
著录项
相似文献
摘要
New mono- and bi-functional perfluoropolyethers comprising repeating units chosen from amongst (C2F4O), (CF2O) and CHEM contiene="yes" statistically distributed along the chain, having a controlled molecular weight and brominated end groups, prepared starting from the product of the photochemical oxidation of C2F4, and/or C3F6, having different peroxide oxygen contents, and subsequent treatment in liquid phase with bromine, at temperatures ranging from -40 DEG to 130 DEG C in the presence of ultraviolet radiations.
展开▼
机译:新的单官能和双官能全氟聚醚,其包含从(C2F4O),(CF2O)和沿链统计分布的重复单元中选择的重复单元,该重复单元是从具有不同过氧化物氧含量的C 2 F 4和/或C 3 F 6的光化学氧化的产物,随后在-40℃至130℃的温度范围内在存在紫外线辐射的情况下用溴在液相中处理。
展开▼