TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A polyester based on ethylene glycol and 2,6-naphthalenedicarboxylic acid (or one of its esters).  1, fiche 1, Anglais, - poly%28ethylene%20naphthalate%29

Record number: 1, Textual support number: 1 OBS

poly(ethylene naphthalate); PEN: term, abbreviation and definition standardized by ISO.  3, fiche 1, Anglais, - poly%28ethylene%20naphthalate%29

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Polyester à base d’éthylène glycol et d’acide 2, 6-naphthalènedicarboxylique(ou l'un de ses esters).  2, fiche 1, Français, - naphtalate%20de%20poly%C3%A9thyl%C3%A8ne

Record number: 1, Textual support number: 1 OBS

poly(éthylène naphtalate); PEN : terme, abréviation et définition normalisés par l’ISO.  3, fiche 1, Français, - naphtalate%20de%20poly%C3%A9thyl%C3%A8ne

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

A urethane is formed from the reaction of an isocyanate with an alcohol. In general, polyurethanes are made using a diisocyanate, a low molecular weight diol (thermoplastic) and/or triol (cross-linked), and a polyether glycol or a polyester glycol. If the reagents are difunctional, a non cross-linked thermoplastic polyurethane will be formed; if the functionality of at least one of the reagents is greater than two, a cross-linked or three dimensional network will form. Cross-linked polyurethanes exhibit less mechanical creep than non cross-linked polyurethanes. The rubbery modulus of polyurethanes increases as the level of cross-linking is increased. Polyurethanes are diblock copolymers. They consist of hard segments (isocyanate and the chain extender rich areas) that act as physical crosslinks, and soft segments (polyether or polyester glycol rich areas).  2, fiche 2, Anglais, - polyester%20glycol

Fiche 2,  Justifications,  Français

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

PETG, glycol-modified polyethylene terephthalate, is a copolyester that is a clear amorphous thermoplastic. PETG sheet has high stiffness, hardness, and toughness as well as good impact strength. Unstressed PETG exhibits good resistance to dilute aqueous solutions of mineral acids, bases, salts, and soaps. PETG also has good resistance to aliphatic hydrocarbons, alcohols, and a variety of oils. Halogenated hydrocarbons, low molecular weight ketones, and aromatic hydrocarbons dissolve or swell this plastic. PETG does not contain a UV inhibitor and it is not suggested for use in applications involving continuous long-term outdoor exposure.  6, fiche 3, Anglais, - poly%28ethylene%20terephthalate%29%20glycol

Record number: 3, Textual support number: 2 CONT

For basic extrusion blow-molding applications, a noncrystalline glycol modified polyester called PETG has been formulated; however, its noncrystalline molecular structure does not permit biaxial orientation.  7, fiche 3, Anglais, - poly%28ethylene%20terephthalate%29%20glycol

Record number: 3, Textual support number: 3 CONT

Amorphous PETG copolyester must be dried below its glass-transition temperature of 176°F (80°C). It can be injection molded at 420-435°F (216-224°C).  1, fiche 3, Anglais, - poly%28ethylene%20terephthalate%29%20glycol

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 OBS

Polyester non cristallin modifié par du glycol.  1, fiche 3, Français, - poly%28%C3%A9thyl%C3%A8ne%20t%C3%A9r%C3%A9phtalate%29%20glycol

Record number: 3, Textual support number: 1 CONT

Le PETG ou polyéthylène téréphtalate glycol [...] est un polyester thermoplastique amorphe non cristallin [dont la] mise au point a été motivée par le besoin de disposer d’un polyester transparent extrudable dans les applications de l'emballage. Il a d’excellentes propriétés de brillance, de transparence et d’éclat. Ce matériau ne s’applique pas aux boissons gazeuses.  3, fiche 3, Français, - poly%28%C3%A9thyl%C3%A8ne%20t%C3%A9r%C3%A9phtalate%29%20glycol

Record number: 3, Textual support number: 2 CONT

Les méthodes d’essais de contenants USP (United States Pharmacopeia) que nous effectuons sur une base régulière [peuvent] être effectués sur les matériaux suivants : PEBD (polyéthylène basse densité/LDPE), PEHD (polyéthylène haute densité/HDPE), PET (polyéthylène téréphtalate), PETG (polyéthylène téréphtalate glycol) et verre.  4, fiche 3, Français, - poly%28%C3%A9thyl%C3%A8ne%20t%C3%A9r%C3%A9phtalate%29%20glycol

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 DEF

Method of production of microencapsulated enzymes based on a chemical reaction to synthesize a water-insoluble polymer at the interface of a microdroplet. The two monomers must have differing solubilities such that one is partially soluble in both the aqueous and organic phases (that is, a hydrophilic monomer) whilst the other must be soluble only in the organic phase (that is, a hydrophobic monomer. A solution of the hydrophilic monomer and enzyme is emulsified in an organic solvent, and to this emulsion is added a solution of hydrophobic monomer in the same organic solvent. By polymerization reactions of the condensation or addition type, a membrane is formed at the interface between the organic and aqueous phases.  2, fiche 4, Anglais, - interfacial%20polymerization%20method

Record number: 4, Textual support number: 1 OBS

The major disadvantage of this procedure is that the hydrophilic monomer can cause deactivation of the enzyme before polymerization occurs.  2, fiche 4, Anglais, - interfacial%20polymerization%20method

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 CONT

Plusieurs procédés de microencapsulation des enzymes ont été décrits. Dans la méthode par polymérisation interfaciale, une solution aqueuse renfermant l'enzyme et un monomère hydrophile(polyamine ou glycol) est émulsionnée dans un solvant organique non miscible à l'eau. Par addition d’un second monomère hydrophobe(chlorure d’acide polybasique) on provoque une réaction de polymérisation entraînant la formation d’une membrane(polyamide ou polyester) autour des microgouttelettes aqueuses. Il est souvent nécessaire d’ajouter un agent tensioactif qui stabilise l'émulsion et permet d’ajuster la taille des capsules aux dimensions désirées, celles-ci pouvant varier de 1 à 100 microns.  1, fiche 4, Français, - m%C3%A9thode%20par%20polym%C3%A9risation%20interfaciale

Fiche 4,  Justifications,  Espagnol