| 摘要 |
Thermoplastic base resin-dyestuff concentrates for use in the dyeing of thermoplastic base resins are made by forming an intimate mixture of a pulverulent or granular thermoplastic base resin with a dye and a wax at a temperature of about 35 DEG to 160 DEG C., the wax being solid at room temperature and being liquefied at the mixing temperature. The thus-formed mixture is then subjected to cooling and may later be used in the manufacture of colored products.
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