Invention Grant
US08022200B2 Process for the preparation of liquid, storage-stable organic isocyanates of low color number containing carbodiimide and/or uretonimine groups
失效
制备含有碳二亚胺和/或脲酮亚胺基团的低色数液体，储存稳定有机异氰酸酯的方法
- Patent Title: Process for the preparation of liquid, storage-stable organic isocyanates of low color number containing carbodiimide and/or uretonimine groups
- Patent Title (中): 制备含有碳二亚胺和/或脲酮亚胺基团的低色数液体，储存稳定有机异氰酸酯的方法
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Application No.: US11173482Application Date: 2005-07-01
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Publication No.: US08022200B2Publication Date: 2011-09-20
- Inventor: Stefan Wershofen , Manfred Schmidt , Hans-Georg Pirkl , Nobuhiro Kamiyama , Shinichi Murakami , Tetsuo Harada
- Applicant: Stefan Wershofen , Manfred Schmidt , Hans-Georg Pirkl , Nobuhiro Kamiyama , Shinichi Murakami , Tetsuo Harada
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agent N. Denise Brown; Noland J. Cheung
- Priority: DE102004033849 20040713
- Main IPC: C07C267/00
- IPC: C07C267/00 ; C07D229/00
Abstract:
The invention relates to a process for the preparation of liquid, storage-stable isocyanate mixtures which are characterized by a low color number and which contain carbodiimide (CD) and/or uretonimine (UI) groups. This invention also relates to the isocyanate mixtures obtained by this process, to their use for the preparation of blends with further isocyanates, and to the preparation of prepolymers containing isocyanate groups and of polyurethane plastics, preferably polyurethane foams from these isocyanate mixtures.
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