发明授权
- 专利标题: Process for the preparation of polyurethane resins using low molecular weight polyhydroxyl compounds prepared by the condensation of formaldehyde
- 专利标题(中): 使用由甲醛缩合制备的低分子量多羟基化合物制备聚氨酯树脂的方法
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申请号: US282219申请日: 1981-07-10
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公开(公告)号: US4379862A公开(公告)日: 1983-04-12
- 发明人: Kuno Wagner
- 申请人: Kuno Wagner
- 申请人地址: DEX Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX2721186 19770511
- 主分类号: C07C27/00
- IPC分类号: C07C27/00 ; A61K8/00 ; A61K8/34 ; A61K8/35 ; A61K8/37 ; A61K8/40 ; A61K8/87 ; A61Q19/00 ; B01J19/24 ; B01J23/00 ; B01J31/00 ; C07B61/00 ; C07C29/141 ; C07C29/143 ; C07C29/145 ; C07C29/38 ; C07C31/18 ; C07C45/00 ; C07C45/72 ; C07C45/75 ; C07C47/19 ; C07C49/17 ; C07C67/00 ; C07F9/40 ; C07H3/02 ; C08G6/02 ; C08G18/00 ; C08G18/32 ; C08G18/54 ; C08G65/10 ; C08G18/14
摘要:
This invention relates to a process for the preparation of polyurethane resins by the reaction of polyisocyanates with a mixture of various low molecular weight hydroxyaldehydes, hydroxyketones and polyhydric alcohols obtained by an improved process for the condensation of formaldehyde with itself.
公开/授权文献
- US5648031A Method of forming antislip surfaces on thermoformed products 公开/授权日:1997-07-15