Preparation of diene-based nanoparticles by semibatch microemulsion polymerization and their catalytic hydrogenation

Effects of silicone resins on copolymerization of acrylated epoxidized soybean oil

“…Sulfuric acid performs as catalyst for promoting the oxidation with hydrogen peroxide of formic to performic acid, that is, oxidizing some epoxy groups to carbonyl groups [ 23 ] ; (3) the peak at 723 cm −1 also deepens, which might represent the vibration of the (CH 2 )n polymer chain after hydrogenation saturation. [ 24 ]…”

“…Sulfuric acid performs as catalyst for promoting the oxidation with hydrogen peroxide of formic to performic acid, that is, oxidizing some epoxy groups to carbonyl groups [23] ; (3) the peak at 723 cm À1 also deepens, which might represent the vibration of the (CH 2 )n polymer chain after hydrogenation saturation. [24] Figure 5A shows the full FTIR spectra of cured AP/SP hybrid resins with different SP mass ratios. The spectra of the bond at region of 1100 $ 1000 cm À1 corresponds to the Si O Si anti-symmetric stretching vibration shows in Figure 5B.…”

Progress in process parameters and mechanism research of polymer emulsion preparation

“…Wang Yong 92 successfully synthesized poly(acrylonitrile- co -butadiene) nanoparticles using a semi-continuous microemulsion polymerization method. The research indicates that during the polymerization process when the mass ratio of surfactant to monomer is 7.9%, latex with a minimum particle size of 34.2 nm can be obtained.…”

Direct hydrogenation of nitrile butadiene rubber latex using M41 catalyst

“…However, this reaction requires large amounts of methyl ethyl ketone (MEK) solvent, four times the latex content needed to swell the NBR particles; thus this reaction is considered as another form of ‘solution hydrogenation’. Wang's research group successfully hydrogenated NBR latex using 1,3‐bis(2,4,6‐trimethylphenyl)‐2‐(imidazolidinylidene) (dichlorophenylmethylene) (tricyclohexylphosphine)ruthenium (Grubbs II) and [1,3‐bis(2,4,6‐trimethylphenyl)‐2‐imidazolidinylidene]dichloro(2‐isopropoxyphenylmethylene)ruthenium (Hoveyda–Grubbs) 22, 23 . On the whole, though there has been certain progress in the hydrogenation of NBR latex using ruthenium‐based catalysts, further comparison studies should be done.…”

“…Wang's research group successfully hydrogenated NBR latex using 1,3-bis (2,4,6-trimethylphenyl)-2-(imidazolidinylidene) (dichlorophenylmethylene) (tricyclohexylphosphine)ruthenium (Grubbs II) and [1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene] dichloro(2-isopropoxyphenylmethylene)ruthenium (Hoveyda-Grubbs). 22,23 On the whole, though there has been certain progress in the hydrogenation of NBR latex using ruthenium-based catalysts, further comparison studies should be done. Recently, ruthenium-based catalyst [1,3- [3-phenylindenylidene]ruthenium(II) (M41) has come to our attention for its olefin metathesis activity.…”