Abstract: An inkable sheet comprises a substrate having on at least one surface thereof an ink absorbent layer comprising a cellulose material and an acid functional resin which is insoluble in water of neutral or acidic pH at room temperature. The acid functional resin may comprise an acid functional polyurethane resin or an acid functional acrylic resin such as a polyacrylate/acrylic acid copolymer. The ink absorbent layer preferably further comprises a weak organic acid or salt thereof and/or at least one crosslinking agent.

Abstract: A thermal transfer printing receiver sheet for use in security laminates, comprises a substrate having a dye-receiving surface on one side and a back coat on the other, characterised in that the substrate comprises a plastics material film having on at least one side thereof a layer which has a lower melting point than the plastics material film and a strength of adhesion to the plastics material film greater than the strength of the plastics material film itself.

Abstract: A thermal transfer printing receiver sheet for use in security laminates, comprises a substrate supporting a receiver coat of a dye-receptive composition on one side and a backcoat on the other, wherein the backcoat comprises a thermoplastic polymer having a Tg less than 130.degree. C., and dispersed therein a particulate solid material in amount 1-24% by weight of the thermoplastic polymer and an average particle size of 0.3-10 .mu.m. The security laminates are prpared after printing the receiver with an image, by bonding a first cover sheet of plastics material to the printed receiver coat so as to overlie the image, and a second cover sheet of plastics material can be bonded to the present backcoat more readily than to a highly crosslinked backcoat, using common adhesives. For greater security, thicker than normal backcoats are used.

Abstract: A benzofuranone of the Formula (1): ##STR1## wherein: R.sup.1 and R.sup.2 are each independently --H or optionally substituted C.sub.1-20 -alkyl;R.sup.3 and R.sup.4 are each independently --H or optionally substituted C.sub.1-6 -alkyl;R.sup.5 is selected from --H, --CN, --COOR.sup.10 and --COR.sup.10, in which R.sup.10 is --H or C.sub.1-6 -alkyl;R.sup.6, R.sup.7, R.sup.8 and R.sup.9 are each independently selected from --H, --NR.sup.1 R.sup.2, --NO.sub.2, halogen, optionally substituted C.sub.1-6 -alkyl and optionally substituted C.sub.1-6 -alkoxy.

Abstract: A benzofuranone of the Formula (1): ##STR1## wherein: R.sup.1 and R.sup.2 are each independently --H or optionally substituted C.sub.1-20 -alkyl;R.sup.3 and R.sup.4 are each independently --H or optionally substituted C.sub.1-6 -alkyl;R.sup.5 is selected from --H, --CN, --COOR.sup.10 and --COR.sup.10, in which R.sup.10 is --H or C.sub.1-6 -alkyl;R.sup.6, R.sup.7, R.sup.8 and R.sup.9 are each independently selected from --H, --NR.sup.1 R.sup.2, --NO.sub.2, halogen, optionally substituted C.sub.1-6 -alkyl and optionally substituted C.sub.1-6 -alkoxy.

Abstract: A security laminate comprises a thermal transfer print having a receiver layer comprising a thermoplastic dye-receptive polymer doped with a cross-linked silicone-containing release system in which the total silicone content is reduced to 0.01-1% by weight of the thermoplastic dye-receptive polymer, and a cover sheet of plastics material bonded to the receiver layer by heat and pressure, preferably without further adhesives between the print and cover sheet.