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Polyolefin calcium carbonate

Calcium carbonate used as an additive in polymeric systems, is a hydrophilic, finely divided powder. When used as a component in polyolefins, the calcium carbonate s surface is modified by coating it with a thin layer of stearic acid. Why would compounders prefer to use the stearic acid coated material over the uncoated mineral ... [Pg.240]

It is estimated that over one million tons of mineral fillers were used in thermoplastic applications in western Europe in 1986 [2], and the figure is doubtless much greater today. Mineral fillers are used to some extent in virtually all the commercially important thermoplastic polymers but, in volume terms, the principal markets are in PVC and polyolefins, where calcium carbonate dominates the filler types with over 80% of the volume consumption [2]. [Pg.69]

J. Gonzalez, C. Albano, M. Ichazo, M. Hernandez and R. Sciamanna, Analysis of thermogravimetric data of blends of polyolefins with calcium carbonate treated with Lica 12, Polymer Degradation and Stability, 73, 211-224 (2001). [Pg.245]

This property can be beneficial for hydrophobic plastics, such as polyolefins, as hydrophobic fillers can show a good interaction with the matrix. Also, hydrophobic fillers can very significantly influence the viscosity of the matrix, hence, its rheology and flowability. Fillers typically absorb oil in much higher quantities compared to water. Calcium carbonate absorbs 13-21% of oil, aluminum trihydrate absorbs 12-41% of oil, titanium dioxide 10-45%, wollastonite 19-47%, kaolin 27-48%, talc 22-57%, mica 65-72%, and wood flour 55-60%. Biodac absorbs 150% of oil by weight. [Pg.129]

P. Jakubowska, T. Stozynski, Thermal diffusivity of polyolefin composites highly filled with calcium carbonate. Polymra 57, 271-275 (2012)... [Pg.177]

Chem. Descrip. Calcium carbonate CAS 471-34-1 EINECS/ELINCS 207439-9 Uses Filler for plastics, PVC, polyolefins, polyesters, BMC/SMC, paint, caulks, sealants, adhesives, paper, foam urethane, modified acrylics, filled thermosets/thermoplastics, and rubber Features Improves impact str., dimensional stability Regulatory NSF approved for potable water materials Properties Wh. powd. 2 avg. particle diam. 99.9% finer than 8 0.15% sol. in water sp.gr. 2.70-2.71 dens. 22.57 Ib/gal bulk dens. 38 Ib/tP (loose) oil absorp. 23 01 cc/100 g brightness (Hunter) 95 ref. index 1.6 pH 9.5 (sat.) hardness (Mohs) 3.0 Toxicobgy Nontoxic Camel-TEX [IMERYS]... [Pg.156]

Chem. Descrip. Calcium carbonate, coated with < 2% stearic acid Chem. Analysis CaCOj (97.6%), MgCOs (1.5%), moisture (0.2% max.) Uses Coated pigment, filler, reinforcement with easy dispersion in plastic compds., e.g., polyolefins, rigid and flexible PVC, nat. and syn. rubbers and latexes for wire and cable insulation compds., water sealant compds., improved impact props, in PP hardens and stiffens stocks filler, pigment, reinforcing agent in paper, paints, caulks Features Flydrophobic disperses readily Regulatory NSF compliance... [Pg.463]

Chem. Descrip. Calcium carbonate (99%) high purity CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Opacifier reinforcing hiding power of plastics (PVC, PU, polyester, polyolefins), emulsion paints, primers, powd. coatings, paper/board adhesives... [Pg.529]

Chem. Descrip. Calcium carbonate coated by org. media CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Eiller in plastics (rigid PVC, cables, calendered sheets, moldings, polyolefins, wh. masterbatches), paints (gloss enamels), elastomers Features Completely compat. with organic media easily dispersed Properties Wh. rhombohedral ctyst. fineness 57% < 2 p dens. 2.7 g/ cm bulk dens. 1.1 g/cm (packed) oil absorp. 15/100 g powd. brightness 97.5% ref. index 1.59 pH 9 hardness (Mohs) 3 Microblanc TMB [Microfill K. Zafranas]... [Pg.529]

Chem. Desaip. Ground calcium carbonate CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Pigment, filler, reinforcement for paper, paint, polymers, food, esp. polyolefins, carpet backing, caulks, sealants, putties, asphalt, ceramics, foamed compds. mild abrasive in cleaners Features Coarse ground... [Pg.701]

Comparison of the effects of mica, glass fibers, talc, calcium carbonate on the properties of a polyolefin matrix (unmodified and chemically modified by maleation)... [Pg.172]

Particulate fillers such as calcium carbonate, carbon black, silica, talc, sawdust, woodflour, slate dust and chopped cotton were originally used in the early plastics as cost-cutting additives, because their cost by weight was lower than that of polymers. One filler manufactmer has recently pubhshed figures suggesting that the addition of 20% of calcium carbonate to a polyolefin polymer can reduce the polymer cost on a weight basis by about 5.7%. The assumption was that the filler costs just over a quarter as much (per tonne) as the polymer. [Pg.40]

There has been growing demand for nonhalogen, low smoke polymers for wire and cable insulation and sheathing. These products can be polyolefins with nonhalogen flame retardants, often metal hydroxides. DuPont markets a maleated compatibiliser under the name Fusabond to compatibilise polyolefins with the inorganic flame retardants, ATH and magnesium hydroxide, as well as with mineral fillers like calcium carbonate. [Pg.104]

Only about 360,000 tonnes of mineral filler of any sort are used in polyolefins. Most of it is either calcium carbonate or talc. Globally, talc has 7% of the fillers-for-plastics market, and China is the world s largest producer. Consumption of talc in plastics is mainly in PP, but there is also considerable demand from the coatings, paper, pharmaceuticals, agricidtmal and water treatment chemicals sectors, as well as for ceramics and refractories. Estimates of consumption depend considerably on which minerals are counted some estimates have put global production at 2.4 M toimes in 2002, for all purposes. [Pg.154]

Calcium carbonate, talc Engineered Isurface-modilied) grades improve polyolefins Cimpact (talc) - Luzenac Hi-Flex - Specialty Minerals Hydrocarb - Omya PoleStar. ZytoCal - ECC Winnolil - ICI... [Pg.191]

Graft copolymers between unsatnrated acids, especially acrylic acid and maleic anhydride (MA), and polyolefins (PE and PP) are widely used as surface modifiers and compatibilisers, sometimes in combination with bi-functional coupling agents [46], for talc, calcium carbonate and calcined clays. Such polymer coatings include polypropylene-maleic anhydride [47], polypropylene c/s-4-cyclohexene-l,2 dicarboxylic acid [48], polystearyl or polylauryl acrylate [49], polypropylene-acrylic acid, partially oxidised poly(butane diol) [50] and ethylene-vinyl acetate copolymers [51]. Acid-containing products can react with basic fillers. With most other types, they will simply adsorb on to the mineral surface, but they can form esters with some non-basic metal hydroxyls, notably silanols. [Pg.28]

See other pages where Polyolefin calcium carbonate is mentioned: [Pg.60]    [Pg.60]    [Pg.411]    [Pg.320]    [Pg.211]    [Pg.412]    [Pg.411]    [Pg.276]    [Pg.119]    [Pg.103]    [Pg.141]    [Pg.247]    [Pg.97]    [Pg.345]    [Pg.346]    [Pg.5481]    [Pg.351]    [Pg.508]    [Pg.695]    [Pg.168]    [Pg.253]    [Pg.298]    [Pg.301]    [Pg.247]    [Pg.105]    [Pg.122]    [Pg.6]    [Pg.10]    [Pg.23]    [Pg.196]    [Pg.298]    [Pg.6234]   
See also in sourсe #XX -- [ Pg.51 ]



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