Invention Grant
- Patent Title: Process for the production of stable polymers
- Patent Title (中): 生产稳定聚合物的方法
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Application No.: US11591779Application Date: 2006-11-02
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Publication No.: US08110704B2Publication Date: 2012-02-07
- Inventor: James Michael Barnes , Hartmut Nefzger , Erika Bauer , Stefan Penninger , Thomas Schultz , Heinrich Lutz , Horst Di Mews , Charles S. Gracik
- Applicant: James Michael Barnes , Hartmut Nefzger , Erika Bauer , Stefan Penninger , Thomas Schultz , Heinrich Lutz , Horst Di Mews , Charles S. Gracik
- Applicant Address: US PA Pittsburgh DE Leverkusen
- Assignee: Bayer MaterialScience LLC,Bayer MaterialScince AG
- Current Assignee: Bayer MaterialScience LLC,Bayer MaterialScince AG
- Current Assignee Address: US PA Pittsburgh DE Leverkusen
- Agent Lyndanne M. Whalen; Nolasn J. Cheung
- Main IPC: C07C265/00
- IPC: C07C265/00 ; C07C291/00 ; C08F6/00 ; C08J3/00
Abstract:
Stable NCO prepolymers are produced from polyisocyanates having a melting point greater than 70° C., preferably, naphthalene diisocyanate, having advantageous physical properties. An important feature of the process of the present invention is the rapid cooling of the prepolymer. The process of the present invention may be carried out on a continuous or batch basis. The prepolymers of the present invention are particularly suitable for the production of cast polyurethane elastomers.
Public/Granted literature
- US20080108776A1 Process for the production of stable polymers Public/Granted day:2008-05-08
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