MAINCOTE™ PR-71

MAINCOTE™ PR-71 is used for all protective coating applications, the first need is for adhesion to and passivation of the substrate. In the past, difficult-to-adhere-to substrates were often treated with a vinyl wash primer to passivate the substrate and provide adhesion for subsequent coats. These vinyl wash primers are increasingly difficult to use as they are very low in solids, high in VOC, and contain toxic pigments. In contrast, MAINCOTE™ PR-71 Waterborne Acrylic Resin allows the coatings manufacturer to supply primers that not only adhere to difficult metallic substrates, but also give good corrosion resistance over carbon steel. This resin's ability to be topcoated by most solvent-based coating systems makes it a very versatile water-based primer.

Principal: Dow Coating Materials

Chemical Family: Chemical Mixtures & Blends

End Uses: Primer, Protective Coatings, Top Coat

Compatible Substrates & Surfaces: Aluminum, Concrete, Galvanized Steel, Metal

Features: Corrosion Resistance, Excellent Adhesion, Excellent Pigment Stability, Good Metal Adhesion, Multi-Substrate Adhesion

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Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Chemical Family
Country of Origin
Product Code
MITM11347
Single Ingredient
Yes
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Labeling Claims
Key Features
  • Exceptional adhesion to galvanized steel – even chromate-treated.
  • Exceptional adhesion to aluminum – even untreated.
  • Good inherent corrosion resistance and reactive pigment stability.
  • Maintenance of properties even when applied under marginal, low-temperature drying conditions
  • Capability of being topcoated by most solvent-borne coatings.

Applications & Uses

Properties

Physical Form
Note

1-These properties are typical but do not constitute specifications.

Regulatory & Compliance

Certifications & Compliance
Contains any chemicals listed on Prop 65 (including impurities, residues, catalysts, monomers, and by-products and excluding heavy metals)?

Technical Details & Test Data

Performance Results

To demonstrate the excellent performance of MAINCOTETM PR-71 Waterborne Acrylic Resin coatings under marginal conditions, several test systems were applied outside at temperatures of 40° to 50°F to chromate treated galvanized steel. These panels were then weathered for three weeks during February in Philadelphia, PA. The systems were next subjected to four days of high humidity in the laboratory fog box, and subsequently tested for adhesion by a cross-hatch test. The results of these tests were:

Coating System Result
2 coats solventborne, 2-pack acrylic / urethane topcoat Fail
Solventborne, 2-pack wash primer / urethane topcoat Marginal
MAINCOTE™ PR-71 Acrylic Emulsion Formulation P-71-1 / urethane topcoat Pass
2 coats solventborne, 2-pack polyamide / epoxy topcoat Fail
Solventborne, 2-pack wash primer / epoxy topcoat Fail
MAINCOTE™ PR-71 Acrylic Emulsion Formulation P-71-1 / epoxy topcoat Pass

Packaging & Availability

Packaging Type

Principal Information

Group Principal Number
S000005
Principal

Storage & Handling

Storage Conditions
  • Keep combustible and/or flammable products and their vapors away from heat, sparks, flames and other sources of ignition including static discharge. Processing or operating at temperatures near or above product flashpoint may pose a fire hazard. Use appropriate grounding and bonding techniques to manage static discharge hazards.
  • Failure to maintain proper volume level when using immersion heaters can expose tank and solution to excessive heat resulting in a possible combustion hazard, particularly when plastic tanks are used.
  • Store products in tightly closed original containers at temperatures recommended on the product label.
  • Dispose in accordance with all local, state (provincial) and federal regulations. Empty containers may contain hazardous residues. This material and its container must be disposed in a safe and legal manner.

Other

Color (SDS)
White milky
Item Number
Odor (SDS)
Ammonia odor
USA/DOT UN Number
Not Applicable
Chemical Properties
ValueUnitsTest Method / Conditions
pH9.0-
Physical Properties
ValueUnitsTest Method / Conditions
Bulking Value0.1099gal/lbDry
Bulking Value0.1149gal/lbwet
Density8.7lb/gal
Film Forming Temperature20.0°C
Glass Transition Temperature (Tg)25.0°CDifferential Scanning Calorimetry
Viscositymax. 500.0cPsBrookfield Viscometer At 25°C, #2, 60 Грm
Material Composition
ValueUnitsTest Method / Conditions
Solid Content50.0%(W/W)By Weight
Solid Content47.8%(W/W)
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Boiling Point (SDS)100.0°CWater
Evaporation Rate (SDS)max. 1.0%Water
Melting Point (SDS)0.0°CWater
Relative Density (SDS)1.2-100.0-Water = 1
Relative Vapor Density (SDS)max. 100.0-Air = 1, Water
Vapor Pressure (SDS)1700000.0mm HgAt 20°C, Water
Volatile Content (SDS)49.0-50.0%Water
pH (SDS)8.5-9.5-