Fluorine‐containing polymers. II. 1, 1‐dihydroperfluoroalkyl acrylates: Preparation of monomers¹

Abstract

Acrylate esters of seven n‐1,1‐dihydroperfluoroalkanols have been synthesized. The esters are: 1,1‐dihydroperfluoroethyl‐; 1,1‐dihydroperfluoropropyl‐; 1,1‐dihydroperfluorobutyl‐; 1,1‐dihydroperfluoropentyl‐; 1,1‐dihydroperfluorohexyl‐; 1,1‐dihydroperfluorooctyl‐; and 1,1‐dihydroperfluorodecyl acrylates. Since these alcohols were difficult to esterify using conventional procedures, acrylyl chloride or acrylic acid plus perfluoroacetic anhydride have been empolyed in this work.

The Synthesis of a New Class of Polymer Colloids with a Low Index of Refraction

“…Startdispersity of the colloids were determined by dynamic light ing from these monomers, we tried to synthesize highly scattering. A plot of the particle diameter as a function of charged polymer colloids (6).…”

The glass transition of charged polymer colloids

“…16 The details of the emulsion polymerization will be presented elsewhere. 17 After purification by diafiltration the size of the polymer colloids was determined with dynamic light scattering. A mean diameter of 500 nm and an refractive index n D 20 ϭ1.37 was obtained.…”

Organic Fluorine Chemistry

“…Fresh distillation and adsorption of stabilizer on silica gel usually precede polymerization. A survey of the most common monomers is shown in the following equations; their physical constants are given in Table 31 [234][235][236][237][238][239][240][241][242]. The polymerization of fluorinated monomers, particularly chlorotrifluoroethylene and tetrafluoroethylene, in chloroform solutions using high concentrations (up to 5 %) of dibenzoyl peroxide gives low-molecularweight oils and greases which are used as inert liquids and lubricants [243].…”

“…Under special conditions, addition products can be isolated (408). (240) C4HgSH, Triton B l44 0 C. 7 days, 65°C, 0.5 hr CF=CF 1 1 CF2-CFa [408] C4HgSCH-CFSC4 H 9 1 1 CF2-CF2 30%…”

“…Acylations at oxygen take place when alcohols or phenols are treated with acyl halides or anhydrides [430,431]. (258) 19O"C CaHsOH + CICOCaF7 ~ CaHsOCOCaF7 52.5% [431] Phenol and trifluoroacetic anhydride react to give phenyl trifluoroacetate, a very good acylating agent [432].…”