| 摘要 |
A polyurethane one-component heat-curing coating which is stable in storage and is hardened above a temperature of about 120 DEG C., comprising a polyol compound having a low glass transition temperature, and a blocked polyisocyanate compound, wherein the blocked polyisocyanate compound is the reaction product of a polyisocyanate compound and a secondary amine compound having the formula: <IMAGE> wherein R is selected from the group consisting of hydrogen atom, C3-C9 alkyl radical, unsubstituted cycloalkyl radical, cycloalkyl radical substituted by C1-C4 alkyl radicals, or heteroatom-containing cycloalkyl radical, wherein each R is identical to or different from each other; R1 is selected from the group consisting of alkyl radical, or cycloalkyl radical, wherein each R1 is identical to or different from each other; or R and R1 are chemically bonded therebetween, thereby forming a ring structure.
|
