DATALASE LTD Patent applications |
Patent application number | Title | Published |
20150361289 | AQUEOUS LASER-SENSITIVE COMPOSITION FOR MARKING SUBSTRATES - Aqueous composition comprising a colour former, a developer, and a binder, wherein (a) the weight ratio between the developer and the colour former is in the range of from 1 to 5; (b) the binder comprises an acrylate binder, comprising acrylic acid and styrene, and at least one additional monomer selected from the group consisting of α-methyl styrene, ethyl acrylate and 2-ethylhexyl acrylate; and (c) the colour former and/or the developer are present in an un-encapsulated form; a process for the preparation of these compositions, substrates coated with this composition and a process for its preparation, and a process for preparing a marked substrate using this composition. | 12-17-2015 |
20140242290 | Laser-Markable Compositions - A laser-markable composition comprises a binder and an oxyanion of a multivalent metal. | 08-28-2014 |
20140127429 | REVERSIBLY ACTIVATABLE DIACETYLENES AND THEIR USE AS COLOUR-FORMERS - A method of forming a coloured substrate, comprising applying to or incorporating within the substrate a diacetylene compound, and exposing the substrate to (i) a first, activating stimulus that converts the diacetylene compound from an unreactive to a reactive form, and (ii) a second stimulus that causes the reactive form of the diacetylene compound to polymerize and form the coloured substrate, wherein the diacetylene compound reverts to its unreactive form on removal of the activating stimulus and is of formula I: Y—C≡C—C≡C—(CH2)n-T-Q-Z (I) wherein: n=an odd integer; T=CO, CS or a bond; Q=NH, S, O, OCONH, NHCONH, NH—CHE-CONH, NHCOO or NHCSNH wherein E is H or a C | 05-08-2014 |
20130196176 | Plastics Colouration - A method of imparting colour 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 | 08-01-2013 |
20100015558 | Laser Marking - An ink formulation comprises a marking component, e.g. ammonium octamolybdate, and a metal salt that absorbs laser irradiation at 780-2500 nm, e.g. reduced indium tin oxide, and thereby causes the marking component to change colour. | 01-21-2010 |
20090221422 | HAND-HELD LASER DEVICE WITH A LASER SOURCE AND AN INTERNAL POWER SUPPLY - The present application relates to a hand held device ( | 09-03-2009 |
20080318154 | Ink-Less Printing - A method of ink-less printing comprises the steps of: providing a source ( | 12-25-2008 |