Suspeno 201-NBAH.A.P.’s Free
MOISTURE FREE * ANTI-SETTLING * ANTI-SAG
RHEOLOGICAL ADDITIVE for SOLVENT BASED COATINGS
SUSPENO 201-NBAprovides anti-settling, pigment suspension and sag control with no increase in apparent viscosity. SUSPENO 201-NBA is an organic compound that affects the rheology of fluid systems. Performance is achieved by highly efficient dispersions in pigmented coatings. This additive will control pigment settling and prevent hard pack in H.A.P.’s Free formulas. SUSPENO 201-NBA is designed for New Generation, Moisture Free H.A.P.’s Free technology.
SUSPENO 201-NBA provides uniform performance, being neutral and is not dependent on activation by heat or chemicals. It is unaffected by the nature of the binder, oils, resins, varnishes or vehicles. SUSPENO 201-NBA has no effect on gloss, color, color retention, flexibility, cure time water and chemical resistance, adhesion or durability.
True Viscosity : Significance
The Stormer and effluent type viscometers record apparent viscosity in the mid range. Such information is useful for production quality control. But it does not deal with what actually takes place under the conditions relating to sagging and pigment suspension.
True viscosity is a critical factor for any coating that requires pigment suspension, anti-settling and sag control. The term means real viscosity in contrast with the apparent viscosity, which is simply a reading by the Stormer viscosimeter in the medium shear range.
Gellants and organic thickeners perform satisfactorily in terms of sag control and pigment suspension but they add viscosity which is undesirable particularly in high solids, low V.O.C. systems or conventional products finishes and industrial coatings.
Note: Both High Solids Systems and Industrial Coatings require high viscosity in the ultra low shear range.
SUSPENO 201-NBA is recommended for nonaqueous industrial coatings and related products. It is particularly well suited to high solids, low V.O.C. systems:
ØSUSPENO 201-NBA is a soft creamy paste, which allows for weighing and batch process or mill base.
ØReduce Dispersion Time
ØNo Breakup of Paste or Powder
ØLower Activating Temperature
The Added Feature: MOISTURE FREE
SUSPENO 201-NBA is Moisture Free, making it eminently suitable for wood finishes (clear and pigmented sealers) where clarity and absence of iron color are essential. Zero moisture is important for urethanes and epoxies, and critical for coatings containing zinc, including aerosols.
Many factors govern the amount to be used: The recommended range is 0.8% to 2.0%. A conservative starting point for evaluation is 1.25% based on total formulation, which allows the operator to reduce or increase the dosage according to the performance requirements of the formulation. A ladder series can be run to obtain optimum lading.
SUSPENO 201-NBA can convert current anti-settling paste and pourable technology formulas to a H.A.P.’s compliant system based on solids of product being replaced. Incorporation and production procedures will remain the same.
To maximize effectiveness SUSPENO 201-NBA should be incorporated with the pigment portion and sufficient vehicle plus solvent to provide a workable mill base. Good shearing action and dwell time (10-15 minutes minimum) are required. To standardize against variable ambient temperature, a minimum dispersion temperature is 100°F (37°C) or 120°F (48°C) is substantial aliphatic solvent is present. Although there is no upper temperature limit, the flash points of the solvent (n-butyl acetate) should be recognized. Cowles mixers along with high shear media, pebble and roller mills are recommended to achieve rapid dispersion. SUSPENO 201-NBA’s soft creamy feature will allow for rapid pre-mixing compared to old paste anti-settling agents.
Note: SUSPENO 201-NBA is not recommended for post-milling stir in use.
Use with Other Rheological Agents
SUSPENO 201-NBA is synergistic with most organic thixotropes, for example the POLYTROLS, SUSPENO 70 and the organo-clay gellants. Such use depend on the desired properties with due consideration of the viscosity factors (see graph).
SUSPENO 201-NBA is listed in C.F.R., Title 21, 175.300, resinous and polymeric coatings intend for repeated food contact applications.
Viscosity Very Soft Paste
Density (gm/cm3) 0.875 Average
Wt./Gal. 7.35 Average
Solvent N-Butyl Acetate
Packaging 55-Gallon Drum
Gallons Per Pound 0.136 Average
(THIS IS NOT TO BE CONSIDERED A SPECIFICATION)
Poly-Resyn, Inc., 534 Stevens Court, Dundee, IL 60118
847-428-4031 800-233-4325 Fax 847-428-0305 www.polyresyn.com
Poly-Resyn Incorporated makes no representations or warranties with respect to the accuracy of research on materials it sells. Poly-Resyn disclaims any implied warranties of merchantability or fitness for any particular purpose. Poly-Resyn shall not be liable for incidental or consequential damages by use of its materials. The user assumes all risk of use and handling. Poly-Resyn’s liability arising out of use of its materials shall be limited to replacement of the materials. The Poly-Resyn materials shall not be used in any way, which would infringe any patent.