发明公开
EP3046958A1 VACUUM ASSISTED PROCESS TO MAKE CLOSED CELL RIGID POLYURETHANE FOAMS USING MIXED BLOWING AGENTS 审中-公开
用于生产硬质聚氨酯泡沫塑料真空辅助过程中应关闭混合驱动装置

VACUUM ASSISTED PROCESS TO MAKE CLOSED CELL RIGID POLYURETHANE FOAMS USING MIXED BLOWING AGENTS
摘要:
Rigid polyurethane foam is made in a vacuum assisted process using a blowing agent mixture that includes water and a hydrofluoroolefin and/or hydrofluorochloroolefin. In preferred embodiments, the blowing agent mixture further includes a hydrocarbon such as cyclopentane.
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