Described herein are nanoparticles that are coated with a bilayer of molecules formed from surface binding molecules and amphiphatic molecules. The bilayer coating self assembles on the nanoparticles from readily available materials/molecules. The modular design of the bilayer coated nanoparticles provides a means for readily and efficiently optimizing the properties of the bilayer coated nanoparticle compositions. Also described herein are uses of such nanoparticles in medicine, laboratory techniques, industrial and commerical applications.
DISPERSION STABILIZER FOR SUSPENSION POLYMERIZATION, METHOD FOR PRODUCING VINYL POLYMER, AND VINYL CHLORIDE RESIN
申请人:Japan Vam & Poval Co., Ltd.
公开号:EP3150639A1
公开(公告)日:2017-04-05
Provided is a dispersion stabilizer which exhibits an excellent polymerization stability when used in suspension polymerization for a vinyl chloride-based resin, and gives a vinyl chloride-based resin having few coarse particles, few fish eyes after resin molding, an excellent plasticizer absorption, and an excellent hue. Also provided is a high-quality vinyl chloride-based resin produced using the dispersion stabilizer. The present invention is a dispersion stabilizer for suspension polymerization containing a polyvinyl alcohol-based polymer (B) which has a double bond in a side chain and which is obtainable by acetalization of a polyvinyl alcohol-based polymer (A) with a monoaldehyde having an olefinic unsaturated double bond.
DISPERSION ASSIS5TANT FOR SUSPENSION POLYMERIZATION, METHOD FOR PRODUCING VINYL POLYMER IN WHICH SAID ASSISTANT IS USED, AND VINYL CHLORIDE RESIN
申请人:Japan Vam & Poval Co., Ltd.
公开号:EP3385287A1
公开(公告)日:2018-10-10
An object of the present invention is to provide a dispersion assistant that, when used for suspension polymerization of a vinyl-based compound, achieves stable production of a good polymer (vinyl-based resin) without much scale adhesion on the polymerization tank even in the cases where used in a large amount. Provided is a dispersion assistant for suspension polymerization, which comprises a polyvinyl alcohol-based polymer (A) having an acetal group (a) having an olefinic unsaturated double bond, the polymer having a saponification degree of 60 mol% or less.
Dispersion stabilizer for suspension polymerization, production method for vinyl-based polymer, and vinyl chloride resin
申请人:Japan Vam & Poval Co., Ltd.
公开号:US10301402B2
公开(公告)日:2019-05-28
Provided is a dispersion stabilizer which exhibits an excellent polymerization stability when used in suspension polymerization for a vinyl chloride-based resin, and gives a vinyl chloride-based resin having few coarse particles, few fish eyes after resin molding, an excellent plasticizer absorption, and an excellent hue. Also provided is a high-quality vinyl chloride-based resin produced using the dispersion stabilizer. The present invention is a dispersion stabilizer for suspension polymerization containing a polyvinyl alcohol-based polymer (B) which has a double bond in a side chain and which is obtainable by acetalization of a polyvinyl alcohol-based polymer (A) with a monoaldehyde having an olefinic unsaturated double bond.
Dispersion assistant for suspension polymerization, method for producing vinyl-based polymer using the same, and vinyl chloride resin
申请人:Japan Vam & Poval Co., Ltd.
公开号:US10731032B2
公开(公告)日:2020-08-04
An object of the present invention is to provide a dispersion assistant that, when used for suspension polymerization of a vinyl-based compound, achieves stable production of a good polymer (vinyl-based resin) without much scale adhesion on the polymerization tank even in the cases where used in a large amount. Provided is a dispersion assistant for suspension polymerization, which comprises a polyvinyl alcohol-based polymer (A) having an acetal group (a) having an olefinic unsaturated double bond, the polymer having a saponification degree of 60 mol% or less.