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US 5,179,184 AGranted
Polymerizable cyclic urea derivatives and polymers having a pendant urea
AssigneeNippon Paint Co., Ltd.
InventorsNoriyuki Tsuboniwa, Satoshi Urano, Hirotoshi Umemoto, Noriyuki Sakamoto, Kenshiro Tobinaga, Yasuyuki Tsuchiya
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Abstract
The present invention relates to polymerizable cyclic urea derivatives which can be thermally split to give rise to an isocyanate group; and to a polymer having cyclic urea pendant groups, which can be cured by heating without any additional curing agent such as an isocyanate blocked with a volatile lower molecular weight material, so that volatile material is not released in a thermal curing process.
Claims7
A polymer having cyclic urea pendant groups represented by the formula (IV):
- ##STR18## wherein X is an oxygen atom, a sulfur atom or --NR.sub.6 -- wherein R.sub.6 is a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group and n is 0 or an integer of 1 to 4.
Dependencies are inferred from the claim text.