# US 9,752,026 B2 · Nanostructured thermoplastic polyamide-grafted polyolefin composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,026 B2 - Document ID: US9752026B2 - Status: Granted - Kind: B2 - Application number: 14/779,236 - Filed: 2014-03-17 - Published: 2016-02-25 - Granted: 2017-09-05 - Earliest claimed: 2013-03-22 - Assignees: Arkema France - Applicants: Arkema France - Inventors: Mathieu Sabard; Stephane Bizet; Jean-Jacques Flat - Web page: https://patentgrep.com/patent/US9752026B2 ## CPC - C08L 51/006: {grafted on to block copolymers containing at least one sequence of polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds} - B32B 27/06: as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)} - B32B 27/18: characterised by the use of special additives - B32B 27/22: using plasticisers - B32B 27/308: {comprising acrylic (co)polymers} - B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} - B32B 27/34: comprising polyamides - C08L 23/0869: with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters - C08L 51/04: grafted on to rubbers - C08L 51/06: grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond - 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 - C08L 87/005: {Block or graft polymers not provided for in groups C08L1/00 - C08L85/04} - B32B 2307/20: having particular electrical or magnetic properties, e.g. piezoelectric - B32B 2307/3065: Flame resistant or retardant, fire resistant or retardant - B32B 2307/71: Resistive to light or to UV - B32B 2307/714: Inert, i.e. inert to chemical degradation, corrosion - C08G 69/08: derived from amino-carboxylic acids - C08G 69/48: Polymers modified by chemical after-treatment - C08L 77/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence) - C08L 2205/02: containing two or more polymers of the same C08L -group - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08L 2205/03: containing three or more polymers in a blend - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - 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 ## Abstract A composition including at least two grafted copolymers, having a polyolefin trunk and polyamide grafts, the polyamide grafts being 15% to 25% by weight of the composition. Also, a multilayered structure including a plurality of adjacent layers, at least one of which has the above composition. The first grafted copolymer is a polyolefin backbone containing a residue of at least one unsaturated monomer (X) and a plurality of polyamide grafts, the polyamide grafts are attached to the polyolefin backbone by the residue of the unsaturated monomer (X). The second copolymer is a grafted elastomeric copolymer of a polyolefin backbone. ## Claims ### Claim 1 A thermoplastic composition consisting of a first copolymer and a second elastomeric copolymer, these two copolymers being grafted by a plurality of polyamide grafts, and optionally, a third copolymer and/or an adjuvant, wherein: the first grafted copolymer consists of a polyolefin backbone containing a residue of at least one unsaturated monomer (X) and a plurality of polyamide grafts, the polyamide grafts are attached to the polyolefin backbone by the residue of the unsaturated monomer (X) comprising a function capable of reacting by a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, the residue of the unsaturated monomer (X) is fixed to the backbone by grafting or copolymerization; the second copolymer consists of a grafted elastomeric copolymer consisting of a polyolefin backbone selected from a maleicized ethylene-propylene copolymer, a maleicized ethylene-butene copolymer, a maleicized ethylene-hexene copolymer, a maleicized ethylene-octene copolymer, a maleicized ethylene-methyl acrylate copolymer, and a plurality of polyamide grafts; and the third copolymer, when present, is a copolymer of ethylene and acrylate and different from the first and second copolymers; wherein the following weight ratios are satisfied: between 10% and 70% by weight of the composition, with or without the third copolymer, for the polyolefin backbone of the first copolymer, between 10% and 70% by weight of the composition, with or without the third copolymer, for the polyolefin backbone of the second copolymer, between 15% and 25% by weight of the composition, with or without the third copolymer, for the polyamide grafts (fixed to the first and second copolymer), and wherein the adjuvant is present in the composition and is selected from the group consisting of a plasticizer, an adhesion promoter, a UV stabilizer and/or a UV absorber, an antioxidant, a flame retardant, and a dyeing/whitening agent. ### Claim 2 (depends on 1) The composition as claimed in claim 1, wherein the unsaturated monomer (X) is maleic anhydride. ### Claim 3 (depends on 2) The composition as claimed in claim 2, wherein the first copolymer is an ethylene/alkyl (meth)acrylate/maleic anhydride terpolymer. ### Claim 4 (depends on 1) The composition as claimed in claim 1, wherein the grafted polymer is nanostructured. ### Claim 5 (depends on 1) The composition as claimed in claim 1, wherein the number-average molar mass of the polyamide grafts of the grafted polymer is within the range from 1000 to 10 000 g/mol. ### Claim 6 (depends on 1) The composition as claimed in claim 1, wherein the polyamide grafts comprise at least one copolyamide. ### Claim 7 (depends on 1) The composition as claimed in claim 1, wherein the first copolymer and/or the second copolymer represent between 30% and 50% by weight of the composition, with or without the third copolymer. ### Claim 8 (depends on 1) The composition as claimed in claim 1, wherein the polyamide grafts represent between 17% and 23% by weight of the composition, with or without the third copolymer. ### Claim 9 (depends on 1) The composition as claimed in claim 1, wherein the third copolymer is present in the composition at between 5% and 20% by weight. ### Claim 10 (depends on 1) A multilayer structure comprising a plurality of adjacent layers, wherein at least one of these layers consists of the composition as defined in claim 1. ### Claim 11 (depends on 6) The composition as claimed in claim 6, wherein the at least one copolyamide is selected from the group consisting of mono-NH2-terminated 6/11, monofunctional-NH2-terminated polyamide 6 and monofunctional-NH2-terminated polyamide 11.