发明授权
US5017641A Preparation of aqueous nonwoven binders of low formaldehyde emission on
curing based on urea, formaldehyde and glyoxal
失效
基于尿素，甲醛和乙二醛的固化制备低甲醛释放的水性非织造粘合剂
- 专利标题： Preparation of aqueous nonwoven binders of low formaldehyde emission on curing based on urea, formaldehyde and glyoxal
- 专利标题（中）： 基于尿素，甲醛和乙二醛的固化制备低甲醛释放的水性非织造粘合剂
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申请号： US347437申请日： 1989-05-02
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公开(公告)号： US5017641A公开(公告)日： 1991-05-21
- 发明人: Fritz E. Kempter , Franz Matejcek , Werner Neubach , Klaus Flory
- 申请人： Fritz E. Kempter , Franz Matejcek , Werner Neubach , Klaus Flory
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX3815724 19880507
- 主分类号： C08G12/12
- IPC分类号： C08G12/12
摘要：
Aqueous nonwoven binders that give reduced formaldehyde emission on curing are based on condensation products of urea or derivatives thereof, formaldehyde and glyoxal in a molar ratio, based on the solid binder, of from 1.5 to 2.5 moles of formaldehyde and from 0.1 to 0.5 mole of glyoxal per mole of the total urea used.
公开/授权文献
- US5485864A Pressure compensation valve 公开/授权日：1996-01-23
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