propylene$64620$ - traduction vers néerlandais
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propylene$64620$ - traduction vers néerlandais

TYPE OF SYNTHETIC RUBBER
Epdm rubber; EPDM; Ethylene propylene diene monomer; Ethylene propylene diene; Ethylene-propylene-diene rubber; Ethylene-propylene-diene rubers; Ethylene Propylene Diene Monomer; Ethylene propylene diene monomer rubber
  • fleece]] on the back, used for [[waterproofing]] [[roof]]s
  • Idealized EPDM polymer, red = ethylene-derived; blue = propylene-derived; black = ethylidene norbornene-derived
  • An EPDM rubber roof

propylene      
n. propyleen (gas)
crotonic acid         
  • Chlorination of butenoic acid
  • Crotamiton synthesis
  • Reaction of crotonic acid into 2-chloro-3-hydroxybutanoic acid and subsequent reactions
  • Hydrogenation of crotonic acid
  • Reaction of crotonic acid with hydrogen bromide.
  • Alkaline hydrolysis of allyl cyanide
  • Reaction of crotonic acid with alkaline potassium permanganate solution.
  • Synthesis of crotonic acid by the Knoevenagel condensation of acetaldehyde and malonic acid
  • Synthesis of crotonic acid from 3-hydroxybutyric acid
  • Preparation of crotonate esters.
CHEMICAL COMPOUND
Quartenylic acid; Crotonic acids; Crotonate; Crotonyl; Crotonic Acid; 3-methylacrylic acid; Beta-methylacrylic acid; Trans-2-butenoic acid; Crotonates; (E)-2-butenoic acid; Butenic acid; Α-Butenic acid; 1-carboxy-propylene; 1-Carboxy-propylene
C3H5COOH, in water oplosbaar zuur gebruikt in organische synthesis (Chemie)

Définition

propylene
['pr??p?li:n]
¦ noun Chemistry a gaseous hydrocarbon of the alkene series, made by cracking alkanes. [C3H6.]

Wikipédia

EPDM rubber

EPDM rubber (ethylene propylene diene monomer rubber) is a type of synthetic rubber that is used in many applications. Dienes used in the manufacture of EPDM rubbers are ethylidene norbornene (ENB), dicyclopentadiene (DCPD), and vinyl norbornene (VNB). 4-8% of these monomers are typically used.

EPDM is an M-Class rubber under ASTM standard D-1418; the M class comprises elastomers with a saturated polyethylene chain (the M deriving from the more correct term polymethylene). EPDM is made from ethylene, propylene, and a diene comonomer that enables crosslinking via sulfur vulcanization. The earlier relative of EPDM is EPR, ethylene propylene rubber (useful for high-voltage electrical cables), which is not derived from any diene precursors and can only be crosslinked using radical methods such as peroxides.

As with most rubbers, EPDM is always used compounded with fillers such as carbon black and calcium carbonate, with plasticisers such as paraffinic oils, and has functional rubbery properties only when crosslinked. Crosslinking mainly occurs via vulcanisation with sulfur but is also accomplished with peroxides (for better heat resistance) or phenolic resins. High-energy radiation, such as from electron beams, is sometimes used to produce foams, wire, and cable.