Other

Clariant International Ltd

Jose Duez

Jean-Philippe Lerch

Frederic Bocquenet

Karl-Heinz Schweikart

Laurent Pourcheron

Fr&eacute;d&eacute;ric Bocquenet

Jos&eacute; Duez

The invention concerns a pigment preparation based on C.I. Pigment Yellow 155, containing 0.1% to 50% by weight, based on the weight of C.I. Pigment Yellow 155, of at least one pigment dispersant from the group of monoazo or disazo pigments substituted with at least one sulfonic acid group, characterized in that it has a chroma C greater than 53 in the CIELAB system in a solventborne alkyd melamine varnish comprising a 6.7% by weight concentration of the pigment preparation, and/or in that it has a chroma C greater than 35 in the CIELAB system in an aqueous base varnish system in a white reduction comprising a 0.2% by weight concentration of the pigment preparation in white reduction.

Pigment preparations based on PY 155

A follower piston for a ball-point pen, the piston including an element in the form of a stable gel whose hardness measured by cone penetration lies in the range 100&times;10 mm to 400&times;10 mm, and a method for manufacturing the element in situ.

Ink follower piston for a ball-point pen, and a method of manufacturing the same

Growing community of inventors

Rouffach, France

Jean-Philippe Lerch