# US 2019/0169476 A1 · Flame-retardant adhesive and sealant with improved mechanical properties > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0169476 A1 - Document ID: US20190169476A1 - Status: Published application - Kind: A1 - Application number: 16/309,897 - Filed: 2017-07-21 - Published: 2019-06-06 - Earliest claimed: 2016-07-21 - Assignees: Sika Technology AG - Applicants: Sika Technology AG - Inventors: Klaas MENNECKE; Sven REIMANN; Marcel OERTLI - Web page: https://patentgrep.com/patent/US20190169476A1 ## CPC - C09J 175/04: Polyurethanes - C08G 18/12: using two or more compounds having active hydrogen in the first polymerisation step - C08G 18/289: {containing silicon} - C08G 18/307: {Atmospheric humidity} - C08G 18/3256: {Reaction products of polyamines with aldehydes or ketones} - C08G 18/4812: {Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups} - C08G 18/4825: {Polyethers containing two hydroxy groups (C08G18/4833 - C08G18/5096 take precedence)} - C08G 18/4829: {Polyethers containing at least three hydroxy groups (C08G18/4833 - C08G18/5096 take precedence)} - C08G 18/485: {containing mixed oxyethylene-oxypropylene or oxyethylene-higher oxyalkylene end groups} - C08G 18/755: {and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate} - C08G 18/7621: {being toluene diisocyanate including isomer mixtures} - C08K 3/016: Flame-proofing or flame-retarding additives - C08K 3/04: Carbon - C08K 5/0016: {Plasticisers} - C08K 5/521: Esters of phosphoric acids, e.g. of H3PO4 - C08K 9/04: Ingredients treated with organic substances {(treated with macromolecular compounds C08K9/08)} - C08K 9/06: with silicon-containing compounds - C09D 175/08: from polyethers - C09J 11/04: inorganic - C09J 11/06: organic - C08K 3/22: of metals - C08K 2003/2227: {of aluminium} - 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) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) ## Abstract A moisture-curable composition having flame retardant properties and to the use thereof as an adhesive, sealant or coating. The composition according to the invention contains at least one moisture-reactive polymer in a proportion of 10% to 50% by weight, at least one precipitated, surface-coated aluminum trihydrate in a proportion of 30% to 60% by weight and in preferred embodiments up to 25% by weight of at least one phosphorus-containing compound and up to 20% by weight of at least one carbon additive. The inventive moisture-curable composition has excellent flame retardant properties and after curing remains resistant for a long time at high heat levels. ## Claims ### Claim 1 A moisture-curable composition comprising a) at least one moisture-reactive polymer P in a proportion of 10% to 50% by weight based on the total composition, b) at least one precipitated, surface-coated aluminum trihydrate ATH in a proportion of 30% to 60% by weight based on the total composition, c) between 0% and 25% by weight based on the total composition of at least one phosphorus-containing compound PH, d) between 0% and 20% by weight based on the total composition of at least one carbon additive KO. ### Claim 2 (depends on 1) The moisture-curable composition as claimed in claim 1, wherein the precipitated surface-coated aluminum trihydrate ATH comprises a surface coating of vinyl silanes or fatty acids. ### Claim 3 (depends on 1) The moisture-curable composition as claimed in claim 1, wherein the phosphorus-containing compound PH is selected from the group of aromatic or aliphatic alkyl phosphates, ammonium phosphate, ammonium polyphosphate, red phosphorus and phosphoric acid and in that the phosphorus-containing compound PH is present in an amount between 5% and 20% by weight based on the total composition. ### Claim 4 (depends on 1) The moisture-curable composition as claimed in claim 1, wherein the moisture-reactive polymer P comprises at least on polyurethane polymer PU having free or latent isocyanate groups or the composition additionally comprises a latent curing agent. ### Claim 5 (depends on 1) The moisture-curable composition as claimed in claim 1, wherein the moisture-reactive polymer P comprises at least one silane-functional polymer STP. ### Claim 6 (depends on 5) The moisture-curable composition as claimed in claim 5, wherein the silane-functional polymer STP has end groups of formula (II) wherein R14 is a linear or branched, monovalent hydrocarbyl radical having 1 to 5 carbon atoms; R15 is a linear or branched, monovalent hydrocarbyl radical having 1 to 8 carbon atoms; x has a value of 0 or 1 or 2; R16 is a linear or branched divalent hydrocarbyl radical having 1 to 12 carbon atoms which may have cyclic and/or aromatic moieties and optionally one or more heteroatoms; and T is a divalent radical selected from —O—, —S—, —N(R17)—, —O—CO—N(R17)—, —N(R17)—CO—O— and —N(R17)—CO—N(R17)—, wherein R17 is a hydrogen radical or a linear or branched hydrocarbyl radical having 1 to 20 carbon atoms which may have cyclic moieties and which may have an alkoxysilane, ether or carboxylic ester group. ### Claim 7 (depends on 4) The moisture-curable composition as claimed in claim 4, wherein the carbon additive KO comprises at least one dried carbon black in a proportion of between 1% and 15% by weight, based on the total composition. ### Claim 8 (depends on 4) The moisture-curable composition as claimed in claim 4, wherein the carbon additive KO comprises at least one expandable graphite in a proportion of between 1% and 15% by weight, based on the total composition. ### Claim 9 (depends on 7) The moisture-curable composition as claimed in claim 7, wherein the composition comprises 4% to 11% by weight of dried carbon black and 7% to 15% by weight of phosphorus-containing compound PH always based on the total composition and the composition after curing achieves at least hazard level class HL2 according to DIN EN 45545-2. ### Claim 10 (depends on 8) The moisture-curable composition as claimed in claim 8, wherein the composition comprises 3% to 10% by weight of expandable graphite and 10% to 25% by weight of phosphorus-containing compound PH always based on the total composition and the composition after curing achieves fire retardancy class B (s2, d0) according to DIN EN 13501-1. ### Claim 11 (depends on 9) A composition that includes the moisture-curable composition of claim 9 and dried carbon black. ### Claim 12 (depends on 10) A composition that includes the moisture-curable composition of claim 10 and an expandable graphite. ### Claim 13 (depends on 1) An adhesive, sealant or coating comprising a moisture-curable composition as claimed in claim 1. ### Claim 14 (depends on 13) A built structure or article of manufacture that has been bonded, sealed or coated with an adhesive, sealant or a coating as claimed in claim 13. ### Claim 15 (depends on 1) A cured composition as claimed in claim 1.