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1. WO2000022031 - EASILY HEAT SEALABLE NYLON FILM

Publication Number WO/2000/022031
Publication Date 20.04.2000
International Application No. PCT/CA1999/000738
International Filing Date 10.08.1999
Chapter 2 Demand Filed 03.05.2000
IPC
C08J 5/18 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
C08L 77/00 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
77Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
CPC
C08J 2377/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2377Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain
C08J 5/18
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
C08L 77/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
77Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain
Applicants
  • DUPONT CANADA, INC. [CA]/[CA] (AllExceptUS)
  • VOGT, Oliver, Harold [CA]/[CA] (UsOnly)
  • LUTTEROTTI, Mario [CA]/[CA] (UsOnly)
  • NORONHA, Natasha [CA]/[CA] (UsOnly)
Inventors
  • VOGT, Oliver, Harold
  • LUTTEROTTI, Mario
  • NORONHA, Natasha
Agents
  • VAN, Zant, Joan, M.
Priority Data
60/103,83509.10.1998US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) EASILY HEAT SEALABLE NYLON FILM
(FR) FILM DE NYLON FACILEMENT THERMOSCELLABLE
Abstract
(EN) A film for manufacturing heat sealable packages for single or multiple use applications in a high temperature environment, wherein the sealant layer or film comprises the following components: i) at least one polyamide resin selected from aliphatic and semi-aromatic polyamides that can be either semi-crystalline or amorphous in structure having a number average molecular weight of at least about 5000, having graft sites and forming the continuous phase of the composition, wherein the semi-crystalline polyamides have a melting point greater than 200 °C; ii) at least one ethylene copolymer, E/X/Y, where E is ethylene and is at least 50 % by weight of E/X/Y, X is from 1-35 % by weight of an acid containing unsaturated mono-carboxylic acid, and Y is 0-49 % by weight of a moiety derived from at least one alkyl acrylate, alkyl methacrylate, alkyl vinyl ether, carbon monoxide, sulfur dioxide, or mixtures thereof where the alkyl groups contain 1-12 carbon atoms, and further wherein the acid groups in the acid-containing moiety are neutralized by from 0-100 % by weight of a metal ion; iii) at least one polymeric grafting agent which contains reactive groups selected from at least one of epoxides, isocyanates, aziridines, silanes, alkyl halides, alpha-halo ketones and aldehydes, or oxazoline, which reacts with the acid-containing moieties in component ii) and additionally react with the graft sites of component i), and iv) at least one C2-C20 polyolefin selected from polyethylene, polypropylene, ethylene propylene diene terpolymer, copolymers of ethylene with vinyl acetate, carbon monoxide, or ethylenically unsaturated carboxylic acids or esters thereof upon which are grafted from about 0.05 to about 5 % by weight of monomers or mixtures of monomers selected from ethylenically unsaturated acidic monomers or their derivatives thereof, with the proviso that a flame retardant is always present.
(FR) L'invention concerne un film destiné à la fabrication d'emballages thermoscellables à applications uni ou pluriservice dans un environnement haute température. La couche ou le film de scellement comprend les composants ci-après : i) au moins une résine polyamide choisie parmi des polyamides aliphatiques et semi-aromatiques, ayant une structure semi-cristalline ou amorphe, un poids moléculaire moyen d'au moins 5000 environ, et des sites de greffage, et formant la phase continue de la composition, lesdits polyamides semi-cristallins ayant un point de fusion supérieur à 200 °C; ii) au moins un copolymère d'éthylène, E/X/Y, où E représente éthylène et au moins 50 % en poids de E/X/Y, X représente de 1 à 35 % en poids d'un acide renfermant un acide mono-carboxylique insaturé, et Y représente de 0 à 49 % en poids d'une fraction provenant d'au moins un alkyl-acrylate, un alkyl-méthacrylate, un alkyl-vinyl-éther, un monoxyde de carbone, du dioxyde de soufre, ou de mélanges de ces produits, le groupe alkyle contenant de 1 à 12 atomes de carbone, et les groupes acides de la fraction contenant l'acide étant neutralisés par 0-100 % en poids d'un ion métal; iii) au moins un agent polymère de greffage renfermant des groupes réactifs choisis parmi l'un au moins des groupes ci-après, à savoir epoxides, isocyanates, aziridines, silanes, halogénures d'alkyle, alpha-halo cétones et aldéhydes, ou oxazoline, lequel réagit avec les fractions contenant l'acide du composant ii) et réagit, en outre, avec les sites de greffage du composant i), et iv) au moins une polyoléfine en C2-C20 sélectionnée dans le groupe constitué de polyéthylène, de polypropylène, d'un terpolymère diénique d'éthylène propylène, des copolymères d'éthylène à acétate de vinyle, de monoxyde de carbone, ou d'acides ou d'esters carboxyliques éthyléniquement insaturés de ces composés, sur lesquels sont greffés de 0,05 à 5 % en poids environ de monomères ou de mélanges de monomères sélectionnés dans le groupe constitué de monomères acides éthyléniquement insaturés ou leurs dérivés, à condition qu'un retardateur de flamme soit toujours présent.
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