Tetra Laval Holdings & Finance S.a.

Datalase Limited

Adam O'Rourke

Anthony N Jarvis

Martin Robert Walker

Christopher Anthony Wyres

Richard Cook

Ben Mulchin

Benjamin Mulchin

Martin Walker

A method of imparting color to a plastic substrate comprising applying to the substrate, or incorporating within the substrate, a diacetylene compound of general formula (I) wherein n=1 to 20; R=an optionally substituted Calkyl group which may contain heteroatoms; T=H, an optionally substituted Calkyl group which may contain heteroatoms or &#x2014;(CH)&#x2014;C(&#x2550;O)-QR; Q=NH, CO, NHCONH, OCONH, COS, NHCSNH or NR, wherein m, Qand Rare independently selected from the same groups as n, Qand Rrespectively; Ris an optionally substituted Calkyl group which may contain heteroatoms; and irradiating the substrate to impart color to the substrate is described.

Plastics colouration

The disclosed invention relates to the use of molybdenum (VI) peroxo complex containing an amino acid, such as MoO(O)(GLY)(HO), in marking applications, as well as to ink formulations comprising such complexes.

Ink formulation

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Widnes, United Kingdom

Adam O'Rourke