# US 10,308,849 B2 · Adhesive composition and structure comprising at least one layer of said composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,849 B2 - Document ID: US10308849B2 - Status: Granted - Kind: B2 - Application number: 14/763,381 - Filed: 2014-01-24 - Published: 2015-12-10 - Granted: 2019-06-04 - Earliest claimed: 2013-01-25 - Assignees: Arkema France - Applicants: Arkema France - Inventors: Thibaut Montanari; Alexandre Vermogen; Fabrice Montezin; Vincent Ferreiro - Web page: https://patentgrep.com/patent/US10308849B2 ## CPC - C09J 177/06: Polyamides derived from polyamines and polycarboxylic acids (C09J177/10 takes precedence) - B32B 1/08: Tubular products - B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers} - B32B 27/34: comprising polyamides - C08G 69/265: {from at least two different diamines or at least two different dicarboxylic acids} - C08G 69/36: derived from amino acids, polyamines and polycarboxylic acids - C08L 77/00: Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain (of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08); Compositions of derivatives of such polymers - C09J 177/00: Adhesives based on polyamides obtained by reactions forming a carboxylic amide link in the main chain (based on polyhydrazides C09J179/06; based on polyamide-imides C09J179/08); Adhesives based on derivatives of such polymers - F16L 11/04: made of rubber or flexible plastics - C08L 2205/02: containing two or more polymers of the same C08L -group - C09J 2477/00: Presence of polyamide - Y10T 428/1352: Polymer or resin containing [i.e., natural or synthetic] - Y10T 428/139: Open-ended, self-supporting conduit, cylinder, or tube-type article - Y10T 428/2896: including nitrogen containing condensation polymer [e.g., polyurethane, polyisocyanate, etc.] - Y10T 428/31725: Of polyamide - 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 - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An adhesive composition including predominantly one or two polyamide(s) having units chosen from: at least one unit denoted A having an average number of carbon atoms per nitrogen atom, denoted CA, ranging from 4 to 8.5, advantageously from 4 to 7; at least one unit denoted B having an average number of carbon atoms per nitrogen atom, denoted CB, ranging from 7 to 10, advantageously from 7.5 to 9.5; and at least one unit denoted C having an average number of carbon atoms per nitrogen atom, denoted CC, ranging from 9 to 18, advantageously from 10 to 18, and to the use thereof. ## Claims ### Claim 1 A polyamide consisting of the following units: at least one unit denoted A with a mean number of carbon atoms per nitrogen atom, denoted CA, ranging from 4 to 8.5; at least one unit denoted B with a mean number of carbon atoms per nitrogen atom, denoted CB, ranging from 7 to 10; at least one unit denoted C with a mean number of carbon atoms per nitrogen atom, denoted CC, ranging from 9 to 18; and optionally at least one unit Z other than an amide unit; one of the units A, B or C being in very predominant proportion in the polyamide and representing from 80% to 97% by weight relative to the total weight of the polyamide, the mean number of carbon atoms per nitrogen atom of the units A, B and C also corresponding to the following strict inequality: CA