Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1978-12-11
1980-07-01
Nielsen, Earl A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
260 18PN, 528117, 528367, 548310, C08G 5902, C08G 5926
Patent
active
042107440
ABSTRACT:
An advanced addition product containing 1,2-epoxide groups is prepared from the reaction of a hydantoin compound of the formula ##STR1## wherein R.sub.1 is hydrogen, alkyl containing 1 to 8 carbon atoms or cycloalkyl containing 5 to 6 carbon atoms; and R.sub.2 is alkyl containing 5 to 8 carbon atoms or cycloalkyl containing 5 to 6 carbon atoms; with less than 1.0 equivalents of NH groups per epoxide group the hydantoin compound, of a binuclear bis-hydantoin of the formula ##STR2## wherein R.sub.3 and R.sub.4 are selected from the group consisting of hydrogen or alkyl of 1 to 4 carbon atoms; or together R.sub.3 and R.sub.4 form tetramethylene or pentamethylene; and A is selected from the group consisting of alkylene, alkylidine or alkylidene substituted by one or more halogen atoms.
REFERENCES:
patent: 3779949 (1973-12-01), Porret et al.
patent: 3799894 (1974-03-01), Porret et al.
patent: 3907719 (1975-09-01), Habermeier et al.
patent: 3963667 (1976-06-01), Schreiber et al.
patent: 4071477 (1978-01-01), Seltzer et al.
Ciba-Geigy Corporation
DiPrima Joseph F.
Nielsen Earl A.
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