Poly-Resyn, Inc.

 

POLYTROL FT

 

ORGANIC RHEOLOGICAL AGENT FOR NON-AQUEOUS COATINGS,

INKS, ADHESIVES, CAULKS AND SEALANTS

 

POLYTROL FT is 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.

 

Applications

Architectural Paints, Including Sealers, Stains Primers and Undercoats

Maintenance Paints

Marine Primers and Finishes

Industrial Coatings and Product Finishes

Traffic Paints

Aerosols

Printing Inks and Adhesives

Caulks, Putty and Sealants

Patching compounds, cold Solders, Gel Coats

Mastic and Trowel Compounds

Asphaltic and Bituminous Products

 

POLYTROL FT is 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).

 

Performance Features

Maximum Rheological Value

Viscosity Increase

Rapid Development of Thixotropy

Pigment Suspension

Non-Penetration

Optimum Balance Between Sag Control and Leveling

No Affect on Color, Gloss, Water Resistance or Durability

Coatings containing POLYTROL 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 of POLYTROL 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.

 

Processing

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 130180F (3582C) for systems based on aliphatic solvents and at 90120F (3349C) 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 120F.

 

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.

 

Usage Level

POLYTROL FT is 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.

 

Properties

Form Fine White Powder

Density (gm/cm3) 1.02

Wt./Gal. 8.47

Bulking Value (gallons/lbs.) 0.1181

 

(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. 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-Resyns 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.

3/2001

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