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POLYETHER POLYURETHANE [9 records]

Record 1 2009-04-07

English

Subject field(s)
  • Chemistry
CONT

Elaspan [regiatered trademark] fiber is a segmented polyurethane spandex(elastane) using a polyether soft segment to provide maximum chemical resistance and high retractive power.

CONT

Segmented polymers are made from hexamethylene or trimethylhexamethylene bis-terephthalamate diesters and hydroxyl-ended poly(alkylene adipate)s.

CONT

The Leeds Polymer group has recently invested 225k towards the purchase of a majority of the TROS equipment needed for high pressure segmental polymer dynamics to be monitored.

OBS

Viscometric and Light Scattering Study in Dimethylacetamide of Linear Segment Polyurethane.

French

Domaine(s)
  • Chimie
CONT

Élastomère de synthèse, classé sous le nom d'élasthane; ce sont des élastofibres composés par au moins 85 % de polyuréthane segmentaire (séquences de segments durs, segments mous).

Spanish

Save record 1

Record 2 2007-11-19

English

Subject field(s)
  • Plastic Materials
  • Upholstery
CONT

Polyether foams of polyurethane can be manufactured in a wide variety of hardnesses and densities to satisfy the particular requirements.... The biggest advantages of polyether foam as far as mattress production is concerned are the material' s outstanding air permeability and the fact that the level of hardness can be set to the customer's requirements.

French

Domaine(s)
  • Matières plastiques
  • Rembourrage (Industrie du meuble)
DEF

Mousse ayant pour produit de base un polyol à chaîne polyéther mélangé avec d'autres produits de synthèse.

Spanish

Save record 2

Record 3 2007-01-31

English

Subject field(s)
  • Chemistry
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).

French

Domaine(s)
  • Chimie
CONT

Les adhésifs époxydes sont constitués de : [...] un (ou des) durcisseur(s) ou agent(s) de réticulation qui, par réaction chimique avec les groupements époxydes, permettent la formation du réseau tridimensionnel réticulé.

CONT

La structure des TD (résines thermodurcissables) a la forme d'un réseau tridimensionnel qui se ponte (double liaison de polymérisation) pour durcir en forme de façon définitive, lors d'un échauffement. La transformation est donc irréversible.

Spanish

Save record 3

Record 4 2006-05-12

English

Subject field(s)
  • Chemical Elements and Compounds
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).

French

Domaine(s)
  • Éléments et composés chimiques

Spanish

Save record 4

Record 5 2005-06-20

English

Subject field(s)
  • Chemical Engineering
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).

French

Domaine(s)
  • Génie chimique
CONT

nous [...] sommes restés dans l'idée d'utiliser un diluant réactif difonctionnel qui jouera le rôle de plastifiant interne. Ce diluant, par sa présence, diminuera la viscosité du mélange fondu et augmentera son temps de gel.

Spanish

Save record 5

Record 6 2005-06-20

English

Subject field(s)
  • Chemistry
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).

French

Domaine(s)
  • Chimie
CONT

Les adhésifs époxydes sont constitués de : [...] un (ou des) durcisseur(s) ou agent(s) de réticulation qui, par réaction chimique avec les groupements époxydes, permettent la formation du réseau tridimensionnel réticulé.

OBS

La structure des TD (résines thermodurcissables) a la forme d'un réseau tridimensionnel qui se ponte (double liaison de polymérisation) pour durcir en forme de façon définitive, lors d'un échauffement. La transformation est donc irréversible.

Spanish

Save record 6

Record 7 2005-06-20

English

Subject field(s)
  • Plastic Materials
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).

CONT

It has been reported that the glassy and rubbery modulus of a curing resin is relatively insensitive to the degree of cure of the material.

French

Domaine(s)
  • Matières plastiques

Spanish

Save record 7

Record 8 2004-02-04

English

Subject field(s)
  • Plastics Industry
CONT

The midsole [of the wet weather boot] is oil-resistent neoprene and works in conjunction with the cushion midsole of polyether polyurethane.

French

Domaine(s)
  • Industrie des plastiques
CONT

La semelle intercalaire [de la botte pour climat humide] est en néoprène résistant à l'huile et elle est combinée à la semelle intercalaire matelassée en polyétherpolyuréthane.

Spanish

Save record 8

Record 9 1999-02-09

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
DEF

A reactive liquid epoxide used as an organic solvent and surfactant intermediate; its polymers can be used for polyester, polyurethane and polyacrylic resins, polyether polyols, flame retardants, etc.

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)

Spanish

Save record 9

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