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Home : Ceramic Shell Materials

* Price: $221.98

*All prices are in Canadian funds.


Primcote Binder 5 Gallon Pail (241508)
Primcote binder is the investment casting industry's leading colloidal silica based primary binder. It has been formulated to eliminate buckling, lifting and cracking of primary shell coats. Primcote binder allows faster drying of primary coats with lower humidity and/or increased air circulation. Primcote binder shell coats can not be overdried as standard colloidal silica shell coats can. It contains a wetting agent, antifoam agent, a color indicator to monitor shell dryness as well as other proprietary ingredients. This binder is also compatible with conventional refractory materials and shell room equipment. Whether casting simple or complicated parts, Primcote binder is the industry's primary binder of choice.

Primcoat Binder is mixed with either Ranco-Sil #2 or Ranco-Sil #4 and used in conjunction with Ranco-Sil 'A' or Ranco-Sil'B' to build ceramic shells for Lost Wax Casting.

Net Weight: 50 Lbs (22.68kg)

Product may freeze if exposed to colder temperatures during shipping. Customer must accept the risk or request to ship during warmer weather.

See Technical Bulletin for application mix instructions and specifications.
Suggested reading : Methods for Modern Sculptors handbook.

Refer to Ransom & Randolph website for further technical information on ceramic shell procedures.

Typical Properties of Primcote Binder:
Base Composition: Colloidal Silica
Other Composition Proprietary Total Solids Content (including SiO2): 30%/weight
Particle Size: (approximate) 10 nm
pH @ 25° : C 10.6
Specific Gravity: 1.18
Weight/Volume: 9.85 lbs/gal 1.18 kg/l
Viscosity @ 25° : C <10cps
Na2O Content (weight): 0.48%
Particle Charge: Negative