Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1984-09-25
1985-09-10
Nielsen, Earl
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528 92, 528 99, 528223, 528224, 528225, 528229, 528365, 528373, 528391, 528405, 528407, 549514, 549552, C08G 5910, C08G 5928, C07D30100, C07D30336
Patent
active
045407690
ABSTRACT:
Aromatic N-glycidylamines are prepared by treatment of an amine having at least one, and preferably two or more aromatic amino hydrogen atoms, with epichlorohydrin in the presence, as catalyst, of a di- or higher-valent metal salt of nitric or perchloric acid, or of a carboxylic or sulphonic acid substituted by fluorine, chlorine or bromine on the carbon atom alpha to the carboxylic or sulphonic acid group, and dehydrochlorinating the product. The presence of the metal salt gives a product having a higher glycidyl content and a lower viscosity than does the same reaction in the absence of such a salt.
Suitable aromatic amines include aniline, phenylene diamines, phenylene diamines substituted on the aromatic ring and bis(4-aminophenyl)methane. The metal salt may be of, for example, magnesium, calcium, zinc, manganese, nickel, iron, lanthanum, vanadium, ytterbium or uranium.
REFERENCES:
patent: 2951825 (1960-09-01), Reinking et al.
patent: 4026858 (1977-05-01), Andrews et al.
patent: 4101459 (1978-07-01), Andrews
patent: 4115296 (1978-09-01), Andrews
patent: 4130511 (1978-12-01), Andrews
Encyclopedia Chemical Technology, 3rd Ed., vol. 9, p. 277.
Dobinson Bryan
Thoseby Michael R.
Ciba-Geigy Corporation
Hall Luther A. R.
Nielsen Earl
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