Adhesion Promoters PUREti for printing Inks

FOR IMMEDIATE RELEASE
Mumbai, Maharashtra, India, Republic of (Free-Press-Release.com) February 1, 2012 -- Polygel PUREti adhesion promoters are the most critical ingredients in liquid packaging flexo and gravure printing inks. These are also called organic titanates as well.

Organic titanates have historically been used in printing inks as an additive to enhance the adhesion as well as an overall performance of an ink printed on the substrate for variety of packaging applications but more specifically for flexible packaging market segment.

Any ink formulator can formulate printing ink that can adhere well on any difficult flexible film substrates using variety of performance enhancing resin chemistries such as Polyurethane, Polyamides, Vinyls, Polyvinyl Butyral, Acrylic etc., however when it comes to making an ink formula more versatile or rather a universal for adhering on to a gamut of substrates, Polygel PUREti organic titanates come to rescue and become the only additives of choice for an ink formulator.

They are quite beneficial specifically in the printing inks based on cellulosic resins e.g. Nitrocellulose as pigment grinding resin let down with other supporting resins having OH and COOH functionality on it.

These functional groups are very essential for organic titanates to do their job efficiently which is to promote an ink adhesion on to printed substrates. They not only improve the adhesion but also improve the adhesion but also improve heat resistance properties of printed ink such as rub, scratch, grease, moisture and in general improve the overall performance of the printed package.

Although, these titanates do improve above mentioned properties, some flexible films do require surface modification by corona, flame or plasma treatment in order to generate reactive functional groups (-OH, -COOH), so these titanate chelates can perform effective bridging between film and resin. Typical such adhesion mechanism is shown below.

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