# US 2008/0187702 A1 · Method of reducing the increase in release force in the production of no-label-look labels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0187702 A1 - Document ID: US20080187702A1 - Status: Published application - Kind: A1 - Application number: 12/024,305 - Filed: 2008-02-01 - Published: 2008-08-07 - Earliest claimed: 2007-02-03 - Assignees: Evonik Goldschmidt GmbH - Inventors: Michael Ferenz; Hardi Dohler; Winfried Hamann; Christian Mund; Juergen Pomorin; Philipp Tomuschat - Web page: https://patentgrep.com/patent/US20080187702A1 ## CPC - C09J 133/04: Homopolymers or copolymers of esters {(C09J143/04 takes precedence)} - C08K 5/005: {Stabilisers against oxidation, heat, light, ozone} - Y10T 428/1462: Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.] - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to acrylate dispersion adhesives containing at least one UV absorber selected from the group consisting of benzoate esters and benzoic ester derivatives, cinnamic esters and cinnamic ester derivatives, benzophenone and benzophenone derivatives, octocrylene, avobenzene and camphor derivatives, and also to the laminates produced using these adhesives. It additionally relates to a process for producing these laminates and to their use for producing no-label-look labels. ## Claims ### Claim 1 An acrylate dispersion adhesive for producing a laminate for no-label-look labels, containing at least one UV absorber selected from the group consisting of benzoate esters and benzoic ester derivatives, cinnamic esters and cinnamic ester derivatives, benzophenone and benzophenone derivatives, octocrylene, avobenzene and camphor derivatives. ### Claim 2 (depends on 1) An acrylate dispersion adhesive according to claim 1, characterized in that the UV absorbers are selected from the group consisting of 4-tert-butylphenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoylresorcinol, bis(4-tert-butylbenzoyl)-resorcinol, benzoylresorcinol, 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate, hexadecyl benzoate, isononyl benzoate, octadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, 2-methyl-4,6-di-tert-butyl-phenyl 3,5-di-tert-butyl-4-hydroxybenzoate and ethyl 4-aminobenzoate. ### Claim 3 (depends on 1) An acrylate dispersion adhesive according to claim 1, characterized in that the UV absorbers are selected from the group consisting of ethyl 4-methoxycinnamate, octyl 4-methoxycinnamate, isoamyl cinnamate and 2-ethylhexyl cinnamate. ### Claim 4 (depends on 1) An acrylate dispersion adhesive according to claim 1, characterized in that the UV absorbers are selected from the group consisting of (2-hydroxy-4-methoxy-phenyl)phenylmethanone, (2-hydroxy-4-methoxyphenyl)-(2-hydroxyphenyl)methanone, octocrylene, avobenzene and 4-methylbenzylidenecamphor. ### Claim 5 (depends on 1) An acrylate dispersion adhesive according to claim 1, characterized in that the amount of UV absorber present is 0.05% to 2% by weight, based on the solids fraction of the acrylate dispersion adhesive. ### Claim 6 (depends on 1) An acrylate dispersion adhesive according to claim 1, characterized in that the amount of UV absorber present is up to 1% by weight, based on the solids fraction of the acrylate dispersion adhesive. ### Claim 7 (depends on 1) A laminate for no-label-look labels, comprising a backing film or backing paper, a radiation-cured abhesive release coating, an adhesive layer and a transparent face stock, characterized in that the adhesive layer contains an acrylate dispersion adhesive according to claim 1. ### Claim 8 (depends on 7) A laminate according to claim 7, characterized in that the release coating contains cationically cured epoxysiloxanes. ### Claim 9 (depends on 7) A laminate according to claim 7, characterized in that the release coating contains free-radically cured silicone acrylates. ### Claim 10 (depends on 1) A process for producing a laminate for no-label-look labels, comprising the steps of a) applying a release coating to a backing film or backing paper, b) applying an adhesive layer to the release film or release paper obtained from step a) and curing it if desired, c) laminating a transparent face stock onto the adhesive layer applied in step b), characterized in that an acrylate dispersion adhesive according to claim 1 is used for the application of the adhesive layer. ### Claim 11 (depends on 7) A method of producing self-adhesive no-label-look labels which comprises of applying the laminate of claim 7 to a label. ### Claim 12 (depends on 1) The acrylate dispersion adhesive of claim 1, wherein the acrylate dispersion adhesives has a solids fraction of about 40% to 60% by weight based on the weight of the acrylate dispersion adhesive. ### Claim 13 (depends on 12) The acrylate dispersion adhesive of claim 12, wherein the solids fraction comprises: about 10% to 60% by weight of a polymer dispersion of an acrylate polymer; about 0% to 50% by weight of a tackifier dispersion for adjusting the tack; about 0.5% to 1.5% by weight of a wetting agent; and about 0.1% to 0.5% by weight of a defoamer with the % by weight based on the amount of solids fraction. ### Claim 14 (depends on 13) The acrylic dispersion of claim 13, wherein the amount of UV absorber present is 0.05% to 2% by weight, based on the solids fraction of the acrylate dispersion adhesive; and the UV absorbers are selected from the group consisting of 4-tert-butylphenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoylresorcinol, bis(4-tert-butylbenzoyl)resorcinol, benzoylresorcinol, 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate, hexadecyl benzoate, isononyl benzoate, octadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, 2-methyl-4,6-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate and ethyl 4-aminobenzoate. ### Claim 15 (depends on 13) The acrylic dispersion of claim 13, wherein the amount of UV absorber present is 0.05% to 2% by weight, based on the solids fraction of the acrylate dispersion adhesive; and the UV absorbers are selected from the group consisting of ethyl 4-methoxycinnamate, octyl 4-methoxycinnamate, isoamyl cinnamate and 2-ethylhexyl cinnamate. ### Claim 16 (depends on 13) The acrylic dispersion of claim 13, wherein the amount of UV absorber present is 0.05% to 2% by weight, based on the solids fraction of the acrylate dispersion adhesive; and the UV absorbers are selected from the group consisting of (2-hydroxy-4-methoxyphenyl)phenylmethanone, (2-hydroxy-4-methoxyphenyl)(2-hydroxyphenyl)methanone, octocrylene, avobenzene and 4-methylbenzylidenecamphor.