# US 12,215,257 B2 · Composition for self-suction adhering foam sheet and self-suction adhering foam laminate sheet > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,215,257 B2 - Document ID: US12215257B2 - Status: Granted - Kind: B2 - Application number: 17/593,212 - Filed: 2020-03-23 - Published: 2022-05-26 - Granted: 2025-02-04 - Earliest claimed: 2019-03-27 - Assignees: Zeon Corporation - Applicants: Zeon Corporation - Inventors: Shinsuke Ashida - Web page: https://patentgrep.com/patent/US12215257B2 ## CPC - C08J 9/0028: {containing nitrogen} - C09J 7/385: {Acrylic polymers} - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 17/10: of synthetic resin - B32B 27/36: comprising polyesters - C08F 220/1804: {C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate} - C08J 9/0023: {containing oxygen} - C08J 9/30: by mixing gases into liquid compositions or plastisols, e.g. frothing with air - C08K 5/09: Carboxylic acids; Metal salts thereof; Anhydrides thereof - C08K 5/098: Metal salts of carboxylic acids - C09J 11/06: organic - C08J 2201/026: Crosslinking before of after foaming - C08J 2333/06: of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical - C09J 2433/00: Presence of (meth)acrylic polymer - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - 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) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract Provided is a composition for a self-suction adhering foam sheet that can be used to obtain a self-suction adhering foam laminate sheet that has excellent air releasability while also inhibiting formation of resin residue on metal after weathering. The composition for a self-suction adhering foam sheet contains a polymer including an unsaturated carboxylic acid monomer unit in a proportion of not less than 0.1 mass % and not more than 20 mass %, a cross-linker, and 1.5 parts by mass or more of a higher fatty acid salt per 100 parts by mass of the polymer. ## Claims ### Claim 1 A composition for a self-suction adhering foam sheet comprising: a polymer including an unsaturated carboxylic acid monomer unit in a proportion of not less than 0.1 mass % and not more than 20 mass %; a cross-linker; and 1.5 parts by mass or more of a higher fatty acid salt per 100 parts by mass of the polymer, wherein the polymer includes an alkenyl aromatic monomer unit and does not include an N-methylol group, and the higher fatty acid salt is a salt formed of a higher fatty acid anion having a carbon number of 8 or more and a counter cation. ### Claim 2 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1, wherein the cross-linker is a carbodiimide cross-linker. ### Claim 3 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1, wherein the polymer further includes a (meth)acrylate monomer unit in a proportion of not less than 35 mass % and not more than 99 mass %. ### Claim 4 (depends on 3) The composition for a self-suction adhering foam sheet according to claim 3, wherein the (meth)acrylate monomer unit includes a (meth)acrylic acid alkyl ester monomer unit having an alkyl group carbon number of not less than 1 and not more than 14. ### Claim 5 (depends on 3) The composition for a self-suction adhering foam sheet according to claim 3, wherein the (meth)acrylate monomer unit includes a (meth)acrylic acid alkyl ester monomer unit having an alkyl group carbon number of not less than 4 and not more than 14. ### Claim 6 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1, further comprising an amphoteric surfactant. ### Claim 7 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1, wherein the higher fatty acid salt is a stearic acid salt. ### Claim 8 (depends on 1) A self-suction adhering foam laminate sheet comprising: a substrate; and a self-suction adhering foam sheet formed using the composition for a self-suction adhering foam sheet according to claim 1. ### Claim 9 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1, wherein the higher fatty acid salt is selected from a stearic acid salt and a tallow fatty acid salt. ### Claim 10 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1 further comprising an amphoteric surfactant, wherein a value obtained by dividing a mass amount of the amphoteric surfactant by a mass amount of the higher fatty acid salt is 0.05 or more and 1 or less. ### Claim 11 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1, wherein the amount of the higher fatty acid salt per 100 parts by mass of the polymer is 1.5 parts by mass or more and 3.6 parts by mass or less. ### Claim 12 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1 further comprising an amphoteric surfactant, wherein a value obtained by dividing a mass amount of the amphoteric surfactant by a mass amount of the higher fatty acid salt is 0.05 or more and 0.8 or less. ### Claim 13 (depends on 1) The composition for a self-suction adhering foam sheet according to claim 1 further comprising an amphoteric surfactant, wherein a value obtained by dividing a mass amount of the amphoteric surfactant by a mass amount of the higher fatty acid salt is 0.05 or more and 0.5 or less.