Instantaneously curable composition
AssigneeNippon Paint Co., Ltd.
InventorsKei Aoki, Noriyuki Tsuboniwa, Satoshi Urano, Ryuzo Mizuguchi
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Abstract
A curable composition which comprises as the essential components (A) a polymer having a main chain comprising carbon-carbon bonds and an isocyanatocarbonyl group as a pendant to the main chain, the content of the isocyanatocarbonyl groups present in the molecule of the polymer being from 0.1 to 72.2% by weight, and (B) an active hydrogen atom-containing compound which has one or more active hydrogen atoms in the molecule.
Claims37
A curable composition comprising (A) an isocyanatocarbonyl group-containing polymer having a carbon-carbon backbone and isocyanatocarbonyl groups pendent therefrom of the formula ##STR7## and a molecular weight between 1,000 and 100,000 and (B) an active hydrogen atom-containing compound.
A polymer comprising a carbon-carbon backbone and pendent groups therefrom, wherein the pendant groups are (a) isocyanatocarbonyl groups of the formula ##STR11## (b) blocked isocyanatocarbonyl groups of the formula ##STR12## wherein B is a blocking group, or (c) oxazolinedione hydrohalide groups of the formula ##STR13## said polymer having a molecular weight between 1,000 and 100,000.
A process for preparing an isocyanatocarbonyl group-containing polymer comprising polymerizing (a) an alkenoyl isocyanate of the formula ##STR17## wherein R is hydrogen or lower alkyl to obtain a polymer having an isocyanatocarbonyl content between 0.1 and 72.2% by weight, (b) a blocked alkenoyl isocyanate to obtain a polymer having a blocked isocyanatocarbonyl content of 0.1% to 99.9% by weight, and removing blocking groups from the resulting intermediate, or (c) an alkenoyloxazolinedione hydrohalide of the formula ##STR18## wherein R is hydrogen or lower alkyl to obtan a polymer having an oxazolinedione hydrohalide content of 0.1% to 83.3% by weight, and decomposing the resulting intermediate.
Dependencies are inferred from the claim text.