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KOMPOSISI POLIISOSIANAT TERBLOKIR DAN KOMPOSISI RESIN PENGAWET TERMAL KEMASAN SATU PAK YANG MENGANDUNG POLIISOSIANAT BLOK
KOMPOSISI POLIISOSIANAT TERBLOKIR DAN KOMPOSISI RESIN PENGAWET TERMAL KEMASAN SATU PAK YANG MENGANDUNG POLIISOSIANAT BLOK
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机译:嵌段聚异烟酸酯的封端多异辛酸酯的组成和热敏性树脂的组成
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摘要
PROBLEM TO BE SOLVED: To provide a curing agent composition containing an active methylene type blocked polyisocyanate having a high heat stability and an excellent hue, a process for producing the same and a one-package thermosetting composition excellent in low-temperature curability and storage stability. ;SOLUTION: This invention provides an active methylene type blocked polyisocyanate composition having a pH of 8.5 or below and obtained by reacting an active methylene compound such as diethyl malonate with a polyisocyanate in the presence of a catalyst being a basic compound (e.g. sodium methylate) and neutralizing at least part of the catalyst with an acidic compound (e.g. dibutyl phosphate) and a one-package thermosetting composition containing the above composition and a polyhydroxy compound.;COPYRIGHT: (C)1997,JPO
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