1,2-Diethenylbenzene → Norborna-diene

HRID 322600

Reaktionsgleichung

Reaktionsgleichung von HRID 322600
[CH:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[CH:9]=[CH2:10])=[CH2:2]>B(F)(F)F>[C:4]12[CH2:9][C:7]([CH2:8][CH2:3]1)=[CH:6][CH:5]=2.[CH:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[CH:9]=[CH2:10])=[CH2:2]

Komponenten

4

Edukt 1

HCID 666661,2-Diethenylbenzene

Produkt 2

HCID 666661,2-DiethenylbenzeneHCID 18006658Norborna-dieneAusbeute 10 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6356Boron trifluorideKatalysator

Versuchsvorschrift

Norbornadiene and divinylbenzene were thermoset in the presence of conjugated soybean oil to give glossy, rubbery, brown solids (Table 7). These thermosets had excellent properties, i.e., no oily phases in the thermoset, little blooming of oils, and no significant decomposition over time in air when the boron catalyst ratio was at least 2% by weight. The higher the ratio of divinylbenzene, the harder the thermoset was (Table 7, entry 5). The lower concentrations of divinylbenzene gave a more rubbery material (entry 3). These thermosets have a tendency to continue the curing process at room temperature over time. Most samples studied with higher concentrations of divinylbenzene became more rigid over a period of months. The use of 1% boron trifluoride catalyst still gave materials with very desirable properties. Conjugated soybean oil with 1% catalyst and 10% each of norbornadiene and divinylbenzene by weight gave a solid that was brown in color, glossy, and slightly rubbery in nature (entry 16). The thermosets with divinylbenzene used alone (Table 8) gave hard, glossy, brown solids when the divinylbenzene content was 15% or higher (entries 3-6).

Aufarbeitung

  1. customat room temperature
  2. waitbecame more rigid over a period of months

Quellen und Nachweise

ORD-Eintrag
ord-6120b730836a42baaf645cddaf716c7b
Quelldatensatz
uspto-grants-2001_04
Patentnummer
US06211315B1

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