TPGOA Technical Insights
Polyolefins are utilized in many applications because of their excellent balance of properties and price.
One important characteristic of these polymers is their hydrophobicity, which can be an advantage in many applications, but, unfortunately, a disadvantage in others.
The low surface energy results in poor adhesion by coatings of all kinds – poor paintability, printability, and dyeability can cause problems in many applications.
Low hydrophilicity can result in static problems as well. Approaches to increasing surface energy and polarity have included plasma and corona treatments, and chlorinated polyolefin adhesion promoters.
These can be useful, but improvement of the inherent hydrophilicity of the polyolefin could eliminate the extra processing steps. One chemical route to improvement of surface energy is grafting of a hydrophilic polymer onto the polyolefin.
Use of an anhydride group as a linking point is a convenient approach – the availability of maleated polyolefins, and the reactivity of the anhydride group with amines, makes this a useful tactic, as long as the polyolefins and amines have suitable properties.
• Improved paintability
• Improved dyeability
• Improved printability
• Improved antistatic properties
• Improved interpolymer adhesion
TPG makes every effort to insure that the information contained herein is accurate - however, we accept no liability for the content of this piece, or for the consequences of any actions taken on the basis of the information provided.
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