Vinyl emulsion polymerization

In the emulsion-polymerization of methyl methacrylate by carbonyl initiators, intramicellar processes have been found to reduce the conversion rate. On the other hand, the application of weak magnetic fields has been found to increase the conversion of emulsion-polymerized vinyl monomers using triplet ketone sensitizers. Here external magnetic fields will decrease the efficiency of triplet-to-singlet radical-pair intersystem crossing within the micelles and thus increase the function of radical pairs that escape without terminating the polymer chains. [Pg.476]

Sodium laureth sulfate emulsifier, emulsion polymerization vinyl chloride... [Pg.1511]

The polymer can be made by suspension, emulsion, solution, or bulk polymerization methods. Most of the PVC used in calendering, extrusion, and molding is prepared by suspension polymerization. Emulsion polymerized vinyl resins are used in plastisols and organisols. ° Only a small amount of commercial PVC is prepared by solution polymerization. The microstructure of PVC is mostly atactic, but a sufficient quantity of syndio-tactic portions of the chain allow for a low fraction of crystallinity (about 5 percent). The polymers are essentially linear, but a low number of short-chain branches may exist. The monomers are predominantly arranged head to tail along the backbone of the chain. Due to the presence of the chlorine group, PVC polymers are more polar than polyethylene. The molecular weights of commercial polymers are M = 100,000 to 200,000 ... [Pg.107]

Spray drier n. A cylindrical or conical-bot-tomed chamber through which hot air rises and into which a resin emulsion is sprayed in small droplets. The solvent evaporates from the droplets as they fall and the dried-resin powder is removed from the chamber bottom by scraping or air blasting. Spray drying has been employed for emulsion-polymerized vinyl resin, and for amino and phenolic resins. [Pg.916]

Emulsion polymerization Vinyl polymers Alkali and freeze-thaw cycle resistant films 69... [Pg.9]

Uses DetergenL penetranL emulsifier, dispersant for bleaching, dyeing operations emulsifier for min. oil, emulsion polymerization (vinyl chloride, vinyl chloride/ acrylic)... [Pg.655]

Uses Emulsifier for latexes, emulsion polymerization, vinyl-acrylic and styrene-acrylic polymers, and min. oils detergent food-pkg. adhesives emulsifier in mfg. of food-contact articles corrosion inhibitor Features APE-free allows clear formulations Reguiatory FDA 21CFR 175.105,178.3400 BGA XIV compliance Properties Gardner 3 max. limpid liq. sol. in water and most polar solvents insol. in aromatic solvents dens. 1.04 g/cc pour pt. = 5 Cl flash pt. > 100 C pH (5% aq.) 8.0-9.0 surf. tens. 40 dynes/cm 0.03% CMC 30% cone, in water Environmentai Biodeg. [Pg.932]

Uses Surfactant, foam stabilizer, detergent, foaming agent, wetting agent, vise, builder for detergents, cosmetics emulsifier for emulsion polymerization (vinyl... [Pg.2440]

Aerosol 18 Disponi SLS 2010 Lipolan PJ-400 Monawet MT-70 dispersant, emulsion polymerization vinyl monomers... [Pg.2613]

Abex LIV 30 Aerosol NPES 930 P Aerosol NPES 3030 P Aerosol TR-70 Disponil AEP 5302 Disponil SLS 2010 Foamphos NP-6 Monawet MO-70 Rhoda-cal LDS-22 Sodium laureth sulfate emulsifier, emulsion polymerization vinyl acrylics... [Pg.2665]

Aerosol 18 Aerosol TR-70 BIO-SOFT D-40 Disponil SLS 2010 LIpolan PJ-400 Liponox NC-200 Monawet MT-70 POLYSTEP B-3 POLYSTEP B-24 POLYSTEP B-25 Rhodaoal LDS-22 Rhodapon TDS Sodium lauryl sulfate Sodium tridecyl sulfate Sunnol NP-2030 emulsifier, emulsion polymerization vinyl chloride/acrylics Liponox NC-200 Liponox NC-300 emulsifier, emulsion polymerization vinyl monomers Agnique OP-4070... [Pg.2665]

Aerosol NPES 428 Aerosol NPES 430 Aerosol NPES 458 Aerosol TR-70 Calimulse EM-22 Calimulse L-22 Calimulse L-30 Calimulse L-50 surfactant, emulsion polymerization vinyl acetate latexes Calimulse EA-303... [Pg.2793]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...