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Processing Aids for PVC

The processing of polymeric materials such as plastics is characterized by a wide variety of distinct methods or techniques. Each technique has a different set of melt rheology requirements that are dictated by the processing mechanism and the equipment design. A qualitative assessment of the effect of major melt rheology properties on selected conversion processes is shown in Tab. 14-2. [Pg.363]

Blow- molding Uniform melt flow, enhanced physical properties Reduced parison sag Uniform wall thickness Bi-orientation Reduced melt fracture at high output rates Can reduce output if too high [Pg.364]

Extrusion Uniform melt flow, enhanced physical properties Higher takeoff speeds Foam density Higher takeoff speeds Reduced melt fracture Surface finish Foam cell structure  [Pg.364]

Commercially available processing aids can be divided into four types - general purpose, high efficient, high melt strength, and lubricating. The performance attributes of different types of processing aids are shown in Tab. 14-3. [Pg.364]

Many polymeric plasticisers, impact modifies, and processing aids for PVC are incorporated into the PVC by mechanical mixing Many of these, including butadiene-acrylonitrile copolymers, ethylene-vinyl acetate copolymers chlori-... [Pg.129]

Vanstay.. T. Vanderbilt] Organic pho hite chelatrx , stalnlizer, synergist, processing aid for PVC formula-tkuis. [Pg.395]

Vanstay. [R.T. Vand ilt] Organic phosphite chelatm, stabile, synergist, processing aid for PVC fomuila-tkms. [Pg.395]

Uses Lubricant, processing aid for PVC, PS, ABS, nyion food-contact coatings... [Pg.186]

Uses Hard, shatterproof transparent or colored material, glass substitute in medical, denial, and industrial applies. impact modifier, processing aid for PVC coaling modifier dispersant, aniiscalant, corrosion inhibi-... [Pg.963]

Synonyms Phenyididecyl phosphite Empirical C26H47O3P Formula C6H50P(OCioH2i)2 Properties Nearly water-wh. liq. alcoholic odor m.w. 438.64 dens. 0.940 (25/15.5 C) m.p. 0 C flash pt. (COC) 218 C ref. index 1.4785 Precaution Combustible Uses Heat stabilizer, antioxidant for resin systems, esp. PVC chemical intermediate lubricant, processing aid for PVC Manuf./Distrib. Akcros Am. http //www.akcros.com, GE Spec. http //www.ge.com/specialtychemicals Trade Name Synonyms Mark DDMPP t[Crompton/Witco Vinyl Addit.] Stavinor DDPP [Ceca SA http //www.ceca.fr]... [Pg.1290]

Metablen P-522 Acrylic processing aid for PVC blow molding Mitsubishi Rayon Co., Metco... [Pg.2317]

Methyl styrenes Standard processing aids for PVC impact modifiers... [Pg.199]

Uses Intemal/extemal lubricant, antisficking agent, processing aid for PVC colorant dispersant and lubricant binder for dry colorant formulations Features Color cones, distribute more readily Regulatory FDA 21 CFR 182.70 Properties Ivorywh. very fine flakes m.p. 65 C Use Level 0.5% (lube in rigid PVC)... [Pg.1732]

D. L. Dunkelberger, Processing Aids for PVC, in Plastics Additives and Modifiers Handbook, J. Edenbaum (ed.). Van Nostrand Reinhold, NY, 1992, Chapter 60. [Pg.379]

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Processing aids

Processing for PVC

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