Adducts containing epoxide groups, from hydantoin polyepoxide an

Details Adducts containing epoxide groups, from hydantoin polyepoxide an Adducts containing epoxide groups, from hydantoin polyepoxide an

1978-12-11

1980-06-24

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, 528310, C08G 5902, C08G 5926

Patent

active

042096081

ABSTRACT:
An advanced addition product containing 1,2-epoxide groups is prepared from the reaction of a hydantoin diglycidyl 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 equivalent of NH groups per epoxide group of the diglycidyl compound of a binuclear bishydrantoin compound 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.1 and R.sub.2 form tetramethylene or pentamethylene, and A is a member selected from the group consisting of alkylene, alkylidene or alkylidene substituted by one or more halogen atoms.
Such adducts exhibit superior melt-flow characteristics and, when formulated into a thermosettable coating composition, exhibit excellent weathering and over-cure properties.

REFERENCES:
patent: 3779949 (1973-12-01), Porret et al.
patent: 3799894 (1974-03-01), Porret et al.
patent: 4071477 (1978-01-01), Seltzer et al.

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