Tappi brightness

General Procedures. Optical brightness pads of hardwood BCTMP and cellulose were prepared following TAPPI procedures (IS). All handsheets were extracted with methanol followed by dichloromethane, vacuum dried, and stored at below 0° C prior to use. Cotton linter handsheets had an average Tappi brightness value of 86.5 0.1 and the BCTMP... [Pg.81]

Reflectance was determined with a commercial UV/visible recording spectrophotometer with integrating sphere, using a vitrolite standard calibrated by the National Bureau of Standards. The value at 457 nm was taken arbitrarily as the reflectance. This is similar, but not equivalent to, TAPPI brightness (42),... [Pg.93]

Curves were plotted from MD/CD averages. TAPPI brightness was read with the Photovolt Meter 670. Sheets were aged in Blue M circulating air ovens at 100°C. [Pg.209]

CAS 14807-96-6 EINECS/ELINCS 238-877-9 Uses Filler providing superior impact str. in polyolefins, exc. stability to gel coats, suitable in automotive, nucleation, and paint industry applies. Properties Powd. 1.4 median diam. fineness (Hegman) 7.0 sp.gr. 2.8 dens. 18.9 Ib/ff (tapped) bulking value 23.3 Ib/gal surf, area 14 m7 g oil absorp. 54 TAPPI brightness 92 pH 9.5 (10% slurry) Cimpact 710 [LuzenacAm.j Chem. Descrip. Platy talc... [Pg.188]

Features Offers high brightness, low abrasion low binder demand Properties Wh. dry pigment (or slurry) 70-80% < 2 particle size 1.5 median particle size 0.01% max. on 325 mesh slurry sp.gr. 1.7 absolute dens. 2.42 g/cc slurry vise. 50-150 cps surf, area 10-14 TAPPI brightness 98-99 ref. index 1.57 pH 7-9 (20% solids) hardness (Mohs) 2.5-3.5 slurry 70% solids Hydrad C [Huber Engineered Materials]... [Pg.411]

Features HM-B8-S preferred for high loadings in engineering resins Properties Wh. free-flowing powd. 1.1 median particle size 99% < 8 sp.gr. 2.38 surf, area 8 mVg oil absorp. 30 TAPPI brightness 94+ ref. index 1.58 hardness (Mohs) 2.5 0.5% moisture Hydramax HM-C9, HM-C9-S [R.J. Marshall]... [Pg.413]

Properties Off-wh. coarse free-flowing powd. 12 median particle size 99% < 55 sp.gr. 2.42 bulk dens, (loose) 45 Ib/ft oil absorp. 32 TAPPI brightness 88+ ref. index 1.57 hardness (Mohs) 3 0.3% free moisture Hydrax H-470 [R.J. Marshaii]... [Pg.413]

Properties Powd. 1.5 p median diam. fineness (Hegman) 6.0 sp.gr. 2.8 dens. 8 Ib/ft (loose) bulking value 23.3 Ib/gal surf, area 16 m7g oil absorp. 43 TAPPI brightness 89 MiWax 410 [Michelmanj... [Pg.538]

Properties Wh. free-flowing powd. 99.9% thru 325 mesh 9 p median particle size sp.gr. 2.42 dens. 20.19 Ib/gal bulk dens, (loose) 0.65, (packed) 1 surf, area 4-5 mVg oil absoq). 28 TAPPI brightness 87 Path 6 [Huber Engineered Materials]... [Pg.611]

Surface Area (m2/g) 8 Specific Gravity 2.38 Oil Absorption 30 Refractive Index 1.58 Hardness (Mohs) 2.5 TAPPI Brightness 94+... [Pg.72]

Median Particle Size (microns) 12 Top Size-99% Less than (microns) 55 Free aioisture (%) 0.3 Loss on Ignition (%) 34.6 Bulk Denslty/loose (Ibs/ft) 45 Specific Gravity 2.42 Refractive Index 1.57 Hardness (Mohs) 3 TAPPI Brightness 884-... [Pg.73]

Median Particle Sise (microns) 1.1 Top Size-99% less than (microns) 9.0 Free moisture (%) 0.5 Loss on Ignition (%) 54.0 Surface Area (ai2/g) 19 Specific Gravity 2.60 Oil Absorption 40 Refractive Index 1.6 TAPPI Brightness 95+... [Pg.270]

Big Chemical Encyclopedia

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