The present invention relates to the field of polyol components suitable for forming polyurethane foam, in particular two component polyurethane foam the resulting foams and methods for their production. The present inventors found gaseous hydrohaloolefin containing polyol components possessing improved shelf-life properties, in particular polyol components comprising a gaseous hydrohaloolefin blowing agent, a nitrogen catalyst and a tin catalyst, wherein the tin catalyst comprises a sulfur atom. The present inventors also found that the shelf-life is further improved if the nitrogen catalyst is at least partially protonated by reaction with an acid, such as an organic acid.
本发明涉及适用于形成聚
氨酯泡沫塑料,特别是双组分聚
氨酯泡沫塑料的多元醇组分领域,由此产生的泡沫塑料及其生产方法。本发明者发现含有气态氢卤烯烃的多元醇组分具有更好的保质期特性,特别是多元醇组分包含气态氢卤烯烃发泡剂、氮催化剂和
锡催化剂,其中
锡催化剂包含一个
硫原子。本发明者还发现,如果氮催化剂通过与酸(如有机酸)反应至少部分质子化,则保质期会进一步提高。