| 摘要 |
Products of a coprecipitation process comprising (i) substantially clear serum and (ii) homogeneous, essentially non-tacky, dustless, friable particles of predispersed rubber or plastic compounding chemical which comprise from about 80 to about 99.5 percent by weight of said chemical and from about 0.5 to about 20 percent by weight of a film-forming binder comprising a rubber or plastic polymer, wherein substantially all of the particles of the compounding chemical are at least 0.05 micron in size and no compounding chemical used is a reinforcing agent or diluent for rubber or plastic stock, are formed associatively. |
