TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

POLYISOPRENE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-01-06

English

Subject field(s)
  • Chemical Elements and Compounds
  • Rubber
Universal entry(ies)
9003-31-0
CAS number
CONT

Polyisoprene is produced by solution polymerization using Ziegler-Natta catalysts. The cis-1,4-polyisoprene is a synthetic equivalent of natural rubber. However, the synthetic polyisoprenes have cis contents of only about 92 to 96%; consequently, these rubber differ from natural rubber in several ways.

OBS

The prefixes "cis-" and "trans-" must be italicized.

OBS

Also known under the following trade names: Betaprene H; Isoprene D.

OBS

Chemical formula: (C5H8)x

OBS

In the chemical formula, the "x" in subscript (or the "n" in subscript in French) replaces a number and is written in italic.

French

Domaine(s)
  • Éléments et composés chimiques
  • Caoutchouc
Entrée(s) universelle(s)
9003-31-0
CAS number
DEF

Nom générique de polymères de l'isoprène ayant pour formule brute (C5H8)n.

OBS

Dans la formule chimique le «x» en indice (en anglais) ou le «n» en indice (en français), qui joue un rôle de caractère de substitution pour un nombre quelconque, s'écrit en italique.

OBS

Les préfixes «cis-» et «trans-» s'écrivent en italique.

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Caucho
Entrada(s) universal(es)
9003-31-0
CAS number
Save record 1

Record 2 2004-01-20

English

Subject field(s)
  • Chemistry
  • Rubber
  • Prosthetic Dentistry
DEF

The purified, coagulated, milky exudate of various trees of the genus Palaquium, Sapotaceae ... Defined as a trans isomer of rubber ... Becomes pliable at 25-30°, plastic at 60°, and melts at 100° with partial decompn. On exposure to air and sunlight, it absorbs oxygen and becomes brittle. Insol in water; partially sol in hot alcohol; 90% or more dissolves in chloroform, carbon disulfide, petr ether, oil of turpentine. ... Use: insulator in electrotechnics, as dental cement; in orthopedics for fracture splints; manuf surgical instruments.

French

Domaine(s)
  • Chimie
  • Caoutchouc
  • Dentisterie prothétique
DEF

Substance extraite du latex d'arbres de la famille des sapotacées (diverses espèces de palaquium et payena), croissant dans l'archipel malais, et qui présente des analogies importantes avec le caoutchouc en ce qui concerne la structure macromoléculaire.

CONT

Dure à la température ordinaire, la gutta-percha devient plastique par chauffage. On l'utilise comme isolant dans l'industrie et en prothèse dentaire, où elle est utilisée pour l'obturation provisoire des cavités des dents dépulpées ou pour l'obturation définitive des canaux radiculaires [...].

Key term(s)
  • polyisoprène trans-1, 4

Spanish

Campo(s) temático(s)
  • Química
  • Caucho
  • Prótesis dental
DEF

Sustancia gomosa que se extrae de árboles de la familia de las sapotáceas y que se emplea para la fabricación de aislantes, tubos, cables y masillas.

Save record 2

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