Phosphoric Acid → Dodecanedioic acid, compd. with 1,6-hexanediamine (1:1)
Reaction equation
[C:1]1(=[O:8])[NH:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[NH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][C:21]([OH:23])=[O:22].P(=O)(O)(O)[OH:25]>O>[CH2:16]([CH2:17][CH2:18][CH2:19][CH2:20][C:21]([OH:23])=[O:22])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2][C:1]([OH:8])=[O:25].[CH2:12]([CH2:11][CH2:10][NH2:9])[CH2:13][CH2:14][CH2:15][NH2:7]Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 260 °C
Procedure
1.0 kg of ε-caprolactam, 1.0 kg of 12-aminododecanoic acid and 200 g of fluoromica (average particle size 8 μm, CEC corresponding to 0.14 mole) was added to 1 kg of water. Into a 30 L volume reactor which was in advance charged with 8 kg of ε-caprolactam were introduced the above-described mixture and 16.1 g (0.14 mole) of 85 wt % phosphoric acid aqueous solution. The temperature and the pressure were then elevated to 260° C. and 5 kg/cm2, respectively. The reaction system was maintained at a temperature of 260° C. and a pressure of 5 kg/cm2 for 2 hours to conduct polymerization while gradually releasing steam, followed by pressure release to atmospheric pressure over a 1 hour period. After standing under conditions of atmospheric pressure and 260° C. for 40 minutes, the reaction mixture was withdrawn in strands, cooled to solidify, and cut to obtain pellets of nylon 6/12 resin composition.
Workup
- customInto a 30 L volume reactor which was in advance
- customwere then elevated to 260° C.
- custompolymerization
- waitfollowed by pressure release to atmospheric pressure over a 1 hour period
- waitAfter standing under conditions of atmospheric pressure and 260° C. for 40 minutes
- customthe reaction mixture was withdrawn in strands
- temperaturecooled
Sources & evidence
- ORD record
- ord-32ba86b039634e228dce0da78c4a9c3b
- Source dataset
- uspto-grants-2000_12
- Patent number
- US06156838
Reaction notes
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