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FLEXIBLE POLYUREA OR POLYUREA-POLYURETHANE FOAMS PREPARED FROM HIGH EQUIVALENT WEIGHT AMINE-TERMINATED COMPOUNDS AND PROCESS FOR PREPARING THE SAME
FLEXIBLE POLYUREA OR POLYUREA-POLYURETHANE FOAMS PREPARED FROM HIGH EQUIVALENT WEIGHT AMINE-TERMINATED COMPOUNDS AND PROCESS FOR PREPARING THE SAME
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机译:由高当量胺基封端化合物制得的柔性聚脲或聚脲-聚氨酯泡沫及其制备方法
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摘要
Flexible polyurethane foams are prepared by reacting a polyisocyanate with certain amine-terminated compounds. The amine-terminated compounds are characterized in having at least 30 percent of their active hydrogen-containing groups in the form of primary aromatic, Lewis acid-blocked primary aliphatic and/or secondary aromatic or aliphatic amine groups. The resulting foams exhibit excellent physical properties, even in the absence of a cross-linker compound.
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