O-Cresol → HCID 131712249, compound
Reaction equation
[CH3:1][C:2]1[N:7]=[C:6]([NH2:8])[N:5]=[C:4]([NH2:9])[N:3]=1.[C:10]1([CH3:17])[C:15]([OH:16])=[CH:14][CH:13]=[CH:12][CH:11]=1.C=O>CO.[OH-].[Na+]>[CH3:1][C:2]1[N:7]=[C:6]([NH2:8])[N:5]=[C:4]([NH2:9])[N:3]=1.[C:10]1([CH3:17])[C:15]([OH:16])=[CH:14][CH:13]=[CH:12][CH:11]=1Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 2
Procedure
A mixture of 40 parts by weight of acetoguanamine, 60 parts by weight of cresol (60% by weight of m-cresol and 40% by weight of p-cresol) and 50 parts by weight of paraformaldehyde was allowed to react in methanol in the presence of sodium hydroxide catalyst to obtain a methanol solution of acetoguanamine-cresol co-condensation resin. A coil was wound using an insulating paper and immersed in said methanol solution under a vacuum of 40 mmHg for one hour. The coil was then dried at 60° C. for 3 hours, then at 100° C. for 2 hours, and immersed in the same epoxy resin composition as used above except for the powdered silica. After immersion under a vacuum of 0.1 mmHg for 30 minutes and subsequent application of an air pressure of 4 kg/cm2, the coil was removed from the resin composition bath and heated at 100° C. for 5 hours, then at 130° C. for 10 hours to harden the resin. The coil thus treated was disposed in a synthetic resin casing and covered at 80° C. with a resin composition containing 100 parts by weight of the above-said epoxy resin composition and 150 parts by weight of powdered silica. After having been defoamed under a vacuum of 5 mmHg for 3 hours, the coil potted with the resin was heated to harden the resin at 130° C. under atmospheric pressure for 15 hours to obtain an integrated resin-molded coil.
Sources & evidence
- ORD record
- ord-32a324e44c7e4b819c670a322dbb1e3d
- Source dataset
- uspto-grants-1981_05
- Patent number
- US04268810
Reaction notes
Loading…