Please wait.'

Page is loading'


Home  > Raw materials & technologies  > Raw materials  > Coatings additives  > Changing colours on a roll

Sunday, 15 September 2019
pdf
Raw materials & technologies, Raw materials, Coatings additives

Changing colours on a roll

Thursday, 26 April 2012

New dispersant for universal tinters aids production of pre-painted metal

Coil coating producers face growing demands for relatively short runs of specific colours

Source: Heiner Witthake - Fotolia.com

Coil coating producers face growing demands for relatively short runs of specific colours

Source: Heiner Witthake - Fotolia.com

Coil coating producers face growing demands for relatively short runs of specific colours, often required at short notice. Producing colours in small batches can be uneconomic, and traditional colour mixing systems require large numbers of tinting pastes to suit different binder systems. One solution is to produce colours as Resin-Free Pigment Concentrates (RFPC), without using dispersing resins. However, high levels of expensive dispersant may be required to produce flowable pastes. Controlled Free Radical Polymer (CFRP) technology can produce polyacrylate block copolymer dispersants with very high efficiency, reducing dispersant requirements in pigment concentrates. One such product was evaluated in RFPCs based on three different pigments. In all cases it showed lower viscosity and higher colour strength than two competitive products and thus offers an efficient solution to the need for flexible production of colours.

You can read the full paper based on this study in the May issue of the European Coatings Journal.

top of page
Comments (0)
Add Comment

Post comment

You are not logged in

register