Nipol® NBR Elastomers
Hot Elastomers
Hot polymerized Nipol NBR elastomers are specifically designed to provide a highly branched, low gel formation polymer. The branching helps prevent pigments from settling out of the adhesive, and the low gel promotes complete polymer solubility. The combination of low gel content with high degrees of branching also encourage good tack and a strong bond. The physical entangled structure of hot polymerized Nipol also provides a significant improvemnet in hot tear strength. Hot polymerized Nipols' natural resistance to flow makes them excellent candidates for compression molding and sponge. Other applications are thin-walled or complex extrusions, where shape retention is important.
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Product
Grade |
% ACN |
Mooney
Viscosity |
Specific
Gravity |
AO
Type |
Special Properties/Applications |
| 1000x88 |
43 |
70-90 |
1.00 |
SS |
Excellent in adhesives when blended with phenolic resins. FDA 175.105 & 177.2600 |
| 1001CG |
41 |
70-95 |
1.00 |
SS |
Excellent oil and fuel resistance. Has controlled cement viscosity. FDA 175.105 & 177.2600 |
| 1001LG |
41 |
70-90 |
1.00 |
SS |
Similar to 1001CG, but can be dissolved in solvents without milling. FDA 175.105 & 177.2600 |
| 1002 |
33 |
75-100 |
0.98 |
NS |
The original medium-high ACN. Provides good long-term water resistance. FDA 175.105 & 177.2600 |
| 1022x59 |
33 |
53-68 |
0.98 |
NS |
Similar to 1001CG, but can be dissolved in solvents without milling. FDA None |
| 1014 |
21 |
75-90 |
0.95 |
SS |
Good low-temperature properties. Blends with natural rubber. FDA 175.105 & 177.2600 | |
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Preplasticized Nipol 1082V has found a primary niche market for making soft 15 to 35 Shore A printing rolls and other low hardness calendered and molded goods. Carboxylated Nipol NX775 is used in high abrasion applications, such as hose covers, oil well drilling parts, high modulus wear seals and premium footwear soles.
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The present generation of cold Nipol NBR elastomers spans a wide variety of compositions. Acrylonitrile contents range from 19% to 51%. Mooney values for bale Nipols range from a tough 110 to pourable liquids.
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Hot polymerized Nipol elastomers are highly branched and are excellent for thin walled or complex extrusions. They are also ideal for solvent-based adhesives. The combination of low gel content and high degree of branching encourages good tack and a strong bond.
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