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公开(公告)号:US20200031983A1
公开(公告)日:2020-01-30
申请号:US16484684
申请日:2017-02-09
发明人: Jian Zou , Shaoguang Feng , Degang Zhang , Jiguang Zhang , Ping Zhang , Wenbin Yao , Yang Zhou , Zhengming Tang
摘要: Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant and at least one catalyst, at least one cyclic 1,3-diketone compound and optionally least one antioxidant. Foams so produced emit low levels of both formaldehyde and acetaldehyde.