B. N. Mehra and Co. Offers Polymer Dyes. B. N. Mehra and Co. Offers various types of acrylic dyes, metal complex dyes, special effect colorants, high performance colorants and additives. The Polymer Dyes are specially designed to color various types of plastic resins such as SAN, PMMA, Rigid PVC, ABS, PC, PA6, PA66, PBT, PPO, ASA, SB, PETP, CA, PS, PET, PU, Polyester, Nylon fibers, PA, PP fibers, etc. The Polymer Dyes are available in varied packaging options.