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Reducing Level of Alcohol in Inks ‐ A medium‐sized US ink manufacturer recently needed to reduce the level of alcohol in its bases for water‐based inks. Ciba Geigy Pigments Division's Inks Technical Centre developed an improved formulation, containing half the alcohol of the previous one and 40 per cent more pigment to allow the ink producer to meet VOC limits and increase production efficiency, at no additional cost.

Air Products chairman and chief executive officer, Dexter F Baker, and president, Dr Bob Lovett, recently visited the main factory at Manchester of their company's new acquisition Anchor Chemical Group.

The surface energy of the printing material can be increased to desired levels with different chemicals or methods. However, the important thing is that the surface properties of printing material are not affected negatively. In this way the aim of this paper provide that the surface properties of matte and glossy coated paper is improved by the argon containing atmospheric pressure plasma device because the plasma treatment method does not occur surface damaging on the papers.

In experimental studies, test samples cut from 160 mm × 30 mm in size from 115 g/m² gloss- and matt-coated papers were used. The plasma treatments of paper samples were carried out with an argon containing atmospheric pressure plasma device of laboratory scale that produces plasma of the corona discharge type at radio frequency. The optimized plasma parameters were at a frequency of 20 kHz and plasma power 200 W. A copper electrode of length 12 cm and diameter 2.5 mm was placed in the centre of the nozzle.

Research findings showed that the surface energies of the papers increased with the increase in plasma application time. While the contact angle of the untreated glossy paper is 82.2, 8 second plasma applied G3 sample showed 54 contact angle value. Similarly, the contact angle of the base paper of matt coated is 91.1, while M3 is reduced to 60.4 contact angles by the increasing plasma time.

Plasma treatment has shown that no chemical coating is needed to increase the wettability of the paper surface by reducing the contact angle between the paper and the water droplet. In addition, the surface energies of all papers treated by argon gas containing atmospheric pressure plasma, increased. Plasma treatment provides to improve both the wettability of the paper and the adhesion property required for the ink, with an environmentally friendly approach.

Presents the view that higher solids clearcoats (more than 60 per cent solids) appear to be an attractive way for original equipment manufacture and refinish to meet European legislations as of 1998. New inventions in the area of low MW oligomers, alternative crosslinking mechanisms and rheology control agents appear to be capable of meeting the automotive and refinish performance levels. New developments in the area of surfactant free copolymerization open a new horizon to formulate waterborne clearcoats with excellent properties and appearance.

Rohm and Haas (UK) Ltd is to close its acrylic monomer manufacturing facilities at Teesside, this month, with the loss of 280 jobs.

Carrs Paints are now factoring the Dupont range of paints for the refinishing of automobiles and commercial vehicles.

The Mearl Corporation, New York, NY, announces the introduction of Mearlin (R) Aztec Gold, the newest addition to the company's expanded offering of golden pearlescent luster pigments which now consists of 17 different grades.