摘要:
The invention concerns a polymer material consisting of macromolecular chains bound by hydrogen bonds wherein: the macromolecular chains consist of a polymer skeleton whereon is fixed by at least one covalent bond a modifying agent, the modifying agent comprising, assembled in a common molecule, one or more associative groups capable of being bound by hydrogen bonds and one or more reactive groups capable of forming covalent bonds with the polymer skeleton, at least one of the associative groups of the modifying agent is an imidazolidone heterocycle, the macromolecular chains bear on average 1 to 10 imidazolidone groups per chain. The average number of imidazolidone groups to be introduced into the macromolecular chains depends both on the average mass of said chains and the final properties desired for the material. The inventive polymer material can be extruded, co-extruded, injected, blown, moulded, overmoulded, calandered, thermoformed. It can be used to produce articles such as tubes, films, plates, extruded strings, bottles, containers. The inventive polymer material can also be mixed with other materials such as other polymers, thus it is used for example as impact modifier or rheology regulator. The invention further concerns the use of said polymer material as compatibility agent in a composition comprising among others at least two polymers belonging to different classes of polymers.
摘要:
The invention concerns a polymer material consisting of macromolecular chains bound by hydrogen bonds wherein: the macromolecular chains consist of a polymer skeleton whereon is fixed by at least one covalent bond a modifying agent, the modifying agent comprising, assembled in a common molecule, one or more associative groups capable of being bound by hydrogen bonds and one or more reactive groups capable of forming covalent bonds with the polymer skeleton, at least one of the associative groups of the modifying agent is an imidazolidone heterocycle, the macromolecular chains bear on average 1 to 10 imidazolidone groups per chain. The average number of imidazolidone groups to be introduced into the macromolecular chains depends both on the average mass of said chains and the final properties desired for the material. The inventive polymer material can be extruded, co-extruded, injected, blown, moulded, overmoulded, calandered, thermoformed. It can be used to produce articles such as tubes, films, plates, extruded strings, bottles, containers. The inventive polymer material can also be mixed with other materials such as other polymers, thus it is used for example as impact modifier or rheology regulator. The invention further concerns the use of said polymer material as compatibility agent in a composition comprising among others at least two polymers belonging to different classes of polymers.
摘要:
Composition comprising, by weight, the total being 100 %: 50 to 100 % of at least one polyamide A1 of formula X.Y/Z or 6.Y2/Z in which: X denotes the residues of an aliphatic diamine having from 6 to 10 carbon atoms, Y denotes the residues of an aliphatic dicarboxylic acid having from 10 to 14 carbon atoms, Y2 denotes the residues of an aliphatic dicarboxylic acid having from 15 to 20 carbon atoms and Z denotes at least one unit chosen from the residues of a lactam, the residues of an α,ω-aminocarboxylic acid, the unit X1, Y1 in which X1 denotes the residues of an aliphatic diamine and Y1 denotes the residues of an aliphatic dicarboxylic acid, the weight ratios Z/(X+Y+Z) and Z/(6+Y2+Z) being between 0 and 15 %; 0 to 40 % of a plasticizer; 0 to 50 % of an impact modifier; and 0 to 50 % of a polyamide A2. The invention also relates to structures comprising a layer consisting of the above composition. This structure is useful for making devices for storing or transferring fluids, in particular in motor vehicles and heavy goods vehicles. The fluids may for example be petrol, diesel, hydraulic brake fluid, compressed air for the brake circuits of heavy goods vehicles, and hydraulic clutch fluid. The invention also relates to these devices. Such devices may be tanks, hoses, pipes or containers. These structures may include other layers consisting of other materials.
摘要:
Composition comprising, by weight, the total being 100 %: 50 to 100 % of at least one polyamide A1 of formula X.Y/Z or 6.Y2/Z in which: X denotes the residues of an aliphatic diamine having from 6 to 10 carbon atoms, Y denotes the residues of an aliphatic dicarboxylic acid having from 10 to 14 carbon atoms, Y2 denotes the residues of an aliphatic dicarboxylic acid having from 15 to 20 carbon atoms and Z denotes at least one unit chosen from the residues of a lactam, the residues of an α,ω-aminocarboxylic acid, the unit X1, Y1 in which X1 denotes the residues of an aliphatic diamine and Y1 denotes the residues of an aliphatic dicarboxylic acid, the weight ratios Z/(X+Y+Z) and Z/(6+Y2+Z) being between 0 and 15 %; 0 to 40 % of a plasticizer; 0 to 50 % of an impact modifier; and 0 to 50 % of a polyamide A2. The invention also relates to structures comprising a layer consisting of the above composition. This structure is useful for making devices for storing or transferring fluids, in particular in motor vehicles and heavy goods vehicles. The fluids may for example be petrol, diesel, hydraulic brake fluid, compressed air for the brake circuits of heavy goods vehicles, and hydraulic clutch fluid. The invention also relates to these devices. Such devices may be tanks, hoses, pipes or containers. These structures may include other layers consisting of other materials.
摘要:
The present invention relates to a structure made of at least one layer containing a polyamide MXD.10 / Z in which: MXD. 10 is the product of condensation of a blend of xylylenediamines containing 70 to 100% of meta-xylylenediamine and of sebacic acid, Z is a repeating unit chosen at least among the repeating units resulting from the polycondensation of a lactam monomer, from an alpha-omega carboxylic aminoacid, the repeating unit Xl . Yl where Xl designates the repeating unit resulting from the polycondensation an aliphatic, arylaliphatic, cycloapiphatic, or aromatic diamine and Yl designates the repeating unit resulting from the polycondensation of a aliphatic carboxylic, cycloaliphatic or aromatic diacid, and the weight ratio Z/(MXD+10+Z) is between 0 and 15%. The structure of the invention can either be made of one layer of this polyamide or either can contain a layer containing the polyamide MXD.10 and at least one layer of another material. The invention also relates to bottles, tanks, containers, pipes, tubes and many types of containment devices made using the previous structure. This structure can also be used into films to produce goods packaging. All these objects have good barrier properties. The invention also relates to these objects as well as the use of these structures and objects.
摘要:
The invention relates to a method for gluing two materials using a cross-linking adhesive. More precisely according to the method, a composition (A) is arranged on the side of the material (A), for gluing to the other material (B), a composition (B) is arranged on the side of the material (B), for gluing to the other material (A), the compositions (A) and (B) and the materials (A) and (B) are brought into contact in the presence of heat and, optionally, pressure is exerted on the materials to give a cross-linked adhesive which connects the two materials. According to an advantageous embodiment, the compositions are used in the form of a film, mesh, or non-woven material. In an other embodiment, the composition (A) is fixed to that part of the material (A), for gluing to the other material (B) and the composition (B) is fixed to that part of the material (B), for gluing to the other material (A). In other words, the invention comprises a method for gluing two materials, by means of a cross-linking adhesive in which that part of the material (A) for gluing to the other material (B) is covered with a composition (A), that part of the material (B) for gluing to the material (A) is covered in a composition (B), the two compositions (A) and (B) are brought into contact in the presence of heat and, optionally, a pressure is exerted on the materials to give a cross-linked adhesive connecting the two materials.