发明授权
- 专利标题: Process to improve polyurethane foam performance
- 专利标题(中): 提高聚氨酯泡沫性能的工艺
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申请号: US09709966申请日: 2000-11-10
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公开(公告)号: US06423756B1公开(公告)日: 2002-07-23
- 发明人: Hassan El Ghobary , Louis Muller
- 申请人: Hassan El Ghobary , Louis Muller
- 主分类号: C08G1814
- IPC分类号: C08G1814
摘要:
An improved process to enhance polyurethane foam performance is described. Polyurethane foam is prepared by reactions between a polyisocyanate and an active hydrogen-containing component wherein said reactions are conducted in the presence of catalysts composed of (a) at least one specific tertiary amine carbamate (formed by the reaction of reactive tertiary amine and polyisocyanate) and, optionally, (b) salts formed by the reaction between the specific tertiary amine carbamate(s) and hydroxy- and/or halo-carboxylic acids. The specific tertiary amine carbamates in the subject invention are dimethylaminoethoxyethyl carbamate, bis(dimethylaminopropyl)amino-2-propyl carbamate, dimethylaminoethyl carbamate, and mixtures thereof.