Printing ink
AssigneeJohnson Matthey PLC
InventorJohn G. Priest
Life of this patent
Estimating the term…
Abstract
The invention relates to a printing ink formulation for producing a transferable layer comprising a pigmentary material or a material possessing predetermined electrical properties, a hot melt adhesive, a solid phase plasticizer and a solvent.
Claims15
A decalcomania or transfer comprising a release backing layer having thereon a transferable design layer formed of printing ink, wherein the ink is constituted so as to remain tack-free until activated by heat and to retain its tackiness for a predetermined period after said activation, said printing ink comprising a metal selected from the group consisting of transition metals and metals of the sub-groups IIIA, IVA, VA and VIA of the periodic classification, a hot melt adhesive selected from acrylic polymers and copolymers, a solid phase plasticizer which has a melting point falling within the range of 60.degree. C. to 90.degree. C. and which is substantially completely insoluble in aliphatic hydrocarbon solvents and only partially soluble in aromatic hydrocarbon solvents and a solvent, the solvent being selected from the group consisting of aliphatic hydrocarbon solvents and mixtures of aliphatic and aromatic hydrocarbon solvents containing up to 40 wt.% of aromatic solvent, the solvent having been removed by evaporation.
A transfer comprising a release backing layer having a transferable design layer thereon formed of a printing ink comprising a material having pigmentary or electrical properties and which is an element or a compound comprising a metal selected from the group consisting of transition metals and metals of the sub-groups IIIA, IVA, VA and VIA of the periodic classification, a hot melt adhesive selected from the group consisting of acrylic polymers and copolymers, a solid phase plasticizer and a solvent, the solvent being selected from the group consisting of aliphatic hydrocarbon solvents and mixtures of aliphatic and aromatic hydrocarbon solvents containing up to 40 wt.% of aromatic solvent, and the plasticizer being one which has a melting point falling within the range of 60.degree. C. to 90.degree. C. and which is substantially completely insoluble in aliphatic hydrocarbon solvents and only partially soluble in aromatic hydrocarbon solvents, the solvent having been removed by evaporation.
A transfer for the application of a design of a material having pigmentary or electrical properties to a heat resistant substrate, comprising a release backing sheet having thereon a layer which includes, in addition to said material, a hot melt adhesive and a solid phase plasticizer wherein the said material comprises a metal selected from the group consisting of transition metals and metals of the sub-groups IIIA, IVA, VA and VIA of the periodic classification, the hot melt adhesive is selected from acrylic polymers and copolymers, and the solid phase plasticizer is one which has a melting point falling within the range of 60.degree. C. to 90.degree. C. and which is substantially completely insoluble in aliphatic hydrocarbon solvents and only partially soluble in aromatic hydrocarbon solvents.
Dependencies are inferred from the claim text.