Nylon 6-6 was the first commercially made all-synthetic fiber. The product resulting from the polymerization reaction of adipic acid and hexamethylene diamines is called Nylon 6-6. The name comes from the molecular chains of the two raw chemical components, containing six carbon atoms each. The reaction between adipic acid and hexamethylene diamine produces hexamethylene diammonium adipate, commonly called nylon salt. It is essential for the material to be polymerized so that high quality fibers, with very few impurities, can be achieved.
Vaisala K-PATENTS® Process Refractometer PR-43-GP is used to monitor and control the nylon salt, caprolactam and polymer solution concentrations.
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