| Title: |
Comparing methods to improve NR productivity. |
| Authors: |
Ignatz-Hoover, Fred1, To, Byron1 |
| Source: |
Rubber & Plastics News. 3/22/2004, Vol. 33 Issue 17, p21-26. 4p. 2 Diagrams, 2 Charts, 7 Graphs. |
| Subject Terms: |
Molecular weights, Polymers, Free radicals, Carbon, Chemicals, Rubber |
| Abstract: |
It will be demonstrated that quinonediimine offers significant advantages to viscosity reduction without some of the compromises accompanying traditional methods of processing improvement. The ideal processing agent does not alter volume fraction of polymer or filler, it effectively captures polymeric free radicals, promotes carbon black dispersion and does not promote oxidative scission chemistry but serves to mediate this chemistry thereby not promoting the increase in low molecular weight polymer in the matrix. All rubber chemicals, including N-(1,3-dimethylbutyl)-N'-phenylpquinonediimine were used without further purification. In the case of the disulfides, rubber and carbon black were mixed for 30 seconds before the addition of carbon black. |
| Database: |
Business Source Complete |
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