Stop rubbersteel . corrosion Start choosing from seven CHEMIGUM NBR'S. They all pass the industry's standard corrosion test—without a scratch. See photo at right. Reason: an advanced extruder-dewatering process reduces the water-sensitive salts in the polymer to an absolute minimum. So it can't corrode steel. Now you can get the exact properties you need. For leak-free shaft seals, O-rings, gaskets, bearing seals and similar applications. Just pick out the exact CHEMIGUM® you need from the table below. And clip the coupon. CHEMIGUM
N206 N300 N600 N608 N612 N615 N625
Nitrile Content very high high medium medium medium medium medium
Mooney Viscosity 50-70 45-63 40-58 70-90 20-34 45-63 40-54
Try 'homogenized' BMB's PLIOFLEX SBR Black
Masterbatches exceed the industry dispersion standards. The slides prove it. At near right is a commercially available BMB. Under the microscope at 165X magnification, 97.2% of the carbon black by volume is dispersed below 10 microns. At far right is the PLIOFLEX® BMB standard: 997% carbon black by volume dispersed below five microns. That's why the PLIOFLEX BMB looks smoother. Why it breaks down easier and processes faster. You get faster mixing, faster extrusion. Better dispersion leaves fewer weak spots, too.
That's why you get higher tensile with PLIOFLEX BMB's. Plus a smoother, shinier finished product.Good resistance to abrasion and flex cracking. Low heat buildup and dye swell. High modulus and elongation. Prove it—on us. Test a sample of PLIOFLEX Black Masterbatch. And stop getting your lumps.
New: oil-extended Natsyn Tests show new N A T S Y N 4 5 0 is superior to all other competitive polyisoprenes. New NATSYN® 450 is polyisoprene rubber with an oil content of 25 pph of Naphthenicoil. It gives you: Higher modulus— 2700 psi. Higher hot tensile strength —2200 psi. And higher tear strength —322 at 212° F and 360 at room temperature. (See graphs at right.) Plus better scorch resistance— 19.9 minutes to a 3 point r?se at 250° F. And you save constant sampling and frequent adjustments. Because it's more consistent than natural rubber. Just set your system and forget it. Available in polyethylene bags and standard Gaylord containers. With 24-hour delivery to prime U.S. rubber m a r k e t s . No p i e r or f r e i g h t charges attached. Just the cost savings of only 2O%0 per pound. Get NATSYN 450—the new oil-extended polyisoprene rubber. And strike it rich.
New NATSYN 450 vs. Competitive Polyisoprenes in a black loaded stock TENSILE STRENGTH, psi 20 min. @ 293°F
300% MODULUS, psi 20min.@293°F
4000+
000-|.
5001 • • • •
NATSYN450
Straight synthetic polyisoprene
Oil-extended polyisoprene
• III
Oil-extended polyisoprene
NATSYN 4 5 0
MOONEY-SCORCH, MS@250°F Minutes to 5 point rise
Straight syntheftfc polyisoprene
Oil-extended polyisoprene
Oil-extended polyisoprene
Oil-extended polyisoprene
TEAR STRENGTH, DIE C
• ••I
NATSYN 4 5 0
Straight synthetic
Straight synthetic polyisoprene
Oil-extended polyisoprene
Oil-extended polyisoprene
Oil-extended polyisoprene
Goodyear Chemical Data Center, Dept. C-16, Box 9115, Akron, Ohio 44305. Please send me data • and/or samples • of the following: •
• •
CHEMIGUM® NBR PLIOFLEX® SBR Black Masterbatches NATSYN® 450 polyisoprene
NAME FTRM
*
ADDRESS CITY
STATE
ZIP
GOOD/VEAR CM EN/1 I
