ORGANIC RHEOLOGICAL AGENT FOR NON-AQUEOUS COATINGS,
INKS, ADHESIVES, CAULKS AND SEALANTS
POLYTROL FTis a white powder that provides a high degree of thixotropy for pigmented systems containing aliphatic and aromatic solvents with oils, resins, varnishes and a polymer vehicle. It increases viscosity particularly in the ultra low shear range, provides pigment suspension, prevents sag and control penetration. The addition of POLYTROL FT provides flow control, the highly desirable optimum balance between sag control and leveling. Systems containing POLYTROL FT have a characteristic property, -- "butteryness," a practical demonstration of thixotropy which is evident in all products whether coatings, inks, adhesives or caulk/sealants.
ØArchitectural Paints, Including Sealers, Stains Primers and Undercoats
ØMarine Primers and Finishes
ØIndustrial Coatings and Product Finishes
ØPrinting Inks and Adhesives
ØCaulks, Putty and Sealants
ØPatching compounds, cold Solders, Gel Coats
ØMastic and Trowel Compounds
ØAsphaltic and Bituminous Products
POLYTROL FTis widely accepted for the highly durable thick film (high build) protective coatings based on chlorinated rubber, vinyls and epoxy-polyamides (Navy Specification MIL-P-24441).
ØMaximum Rheological Value
ØRapid Development of Thixotropy
ØOptimum Balance Between Sag Control and Leveling
ØNo Affect on Color, Gloss, Water Resistance or Durability
Coatings containingPOLYTROL FT are truly thixotropic; they have a specific but short period of viscosity recovery. This time-dependency is preferred over ordinary pseudoplastic thickening because POLTYROL FT allows for flow-out and leveling.
The thixotropy ofPOLYTROL FT is associated with two factors: (1) the solvent power of the solvents and (2) the solubility parameter of the vehicle solids, which vary according to the nature of the binder. A primary rule in developing the thixotropy calls for thorough dispersion and swelling of the particles. This is achieved by adequately shearing it in vehicle.
In high-speed dispersers,POLYTROL FT should be sprinkled into vehicle and some solvent for a ten-minute premix stage after which the pigments and other components are added. Dispersion should follow for 10-15 minutes in the range of 130°–180°F (35°–82°C) for systems based on aliphatic solvents and at 90°–120°F (33°–49°C) for those based on aromatics, oxygenated or ester solvents. Letdown vehicle (and or solvent) is added with agitation continuing while the batch cools to at least 120°F.
For sand mills and attritors the dwell time is so short as to not allow for complete dispersion and swelling. This suggests premixing in a high-speed disperser according to the above procedure.
POLYTROL FTis effective at 0.25% to 1.25% by weight on the total composition. The exact amount will depend on the specific formulation and desired rheological properties. Evaluation is suggested at about five pounds per 100 gallons – adequate as a starting point for conventional paints and coatings. At this level the formulator can observe primary characteristics, making further adjustments according to the finished product requirements.
Form Fine White Powder
Density (gm/cm3) 1.02
Bulking Value (gallons/lbs.) 0.1181
(THIS IS NOT TO BE CONSIDERED A SPECIFICATION)
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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. The Poly-Resyn materials are solid "as is". 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.