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CP 349W
CP 349W is a dispersion of chlorinated polypropylene in water. It is used as an adhesion promoter for waterborne coatings, inks, and adhesives applied to polyolefin-based substrates.
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- Manufacturer: Eastman
- Product Line: Eastman Polyolefin Adhesion Promoters
- Product: Chlorinated Polyolefin Adhesion Promoters
- Industries: Adhesives | Coatings | Inks
- Authorized Countries: Canada | United States
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Authorized Countries
Canada
United States
Overview
CP 349W is a waterborne adhesion promoter designed for waterborne coatings, paints, inks, and adhesives applied to polyolefin-based substrates like polypropylene and TPO. It is also a useful adhesion-promoting additive for nonplastic substrates like metal. This dispersion of chlorinated polypropylene contains 2-amino-2-methyl-1-propanol as a neutralizing amine, making it more compatible with waterborne resins and thus useful as a stir-in additive. CP 349W also contains 5% ethylene glycol solvent to improve the freeze resistance of the adhesion promoter.
This polyolefin adhesion promoter is compatible with most waterborne preneutralized dispersion resins and many amine-neutralizable solution resins. CP 349W excels as an adhesion promoter with polyurethane dispersion resins and is very effective with acrylic dispersion resins.
Specifications
Solids (wt%): 26
CPO (wt%): 20
pH (at 25°C): 9–10
Wt/vol (g/L, lb/gal): 1010–1040, 8.4–8.7
Viscosity (Brookfield, cPs): 10
Chlorination (%): 18–23
Water (wt%): 69
Organic solvents (wt%): 5
Color (Gardner): Tan
Specific gravity (at 25°C): 1.020
Primary Chemistry: Chlorinated polyolefin
Primary Chemistry: Chlorinated Polyolefin
Features & Benefits
- Improved adhesion to polyolefin surfaces, such as polypropylene and TPO
- Flexibility in use as an additive or a primer
- Low solvent content and low VOCs
- Compatible with waterborne resins
- Improved freeze resistance
Problems Solved
Low adhesion of waterborne systems to polyolefin-based substrates Poor storage stability of water-based primers in freezing temperatures VOC restrictions that prevent the use of solvent-based chemistries
Applications
Automotive OEM paints Coatings for polyolefin-based automotive plastics Plastic coatings Graphic arts General industrial coatings
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