Invention Grant
US4595744A Low melting point diphenylethane diisocyanate mixtures, method of making
the same, and polyurethanes made therefrom
失效
低熔点二苯基乙烷二异氰酸酯混合物，其制备方法和由其制成的聚氨酯
- Patent Title: Low melting point diphenylethane diisocyanate mixtures, method of making the same, and polyurethanes made therefrom
- Patent Title (中): 低熔点二苯基乙烷二异氰酸酯混合物，其制备方法和由其制成的聚氨酯
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Application No.: US679571Application Date: 1984-12-07
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Publication No.: US4595744APublication Date: 1986-06-17
- Inventor: Jacques Kervennal , Henri Mathais
- Applicant: Jacques Kervennal , Henri Mathais
- Applicant Address: FRX
- Assignee: Atochem
- Current Assignee: Atochem
- Current Assignee Address: FRX
- Priority: FRX8320458 19831221
- Main IPC: C08G18/00
- IPC: C08G18/00 ; C07C67/00 ; C07C241/00 ; C07C263/10 ; C07C265/12 ; C07C265/14 ; C08G18/76 ; C08L75/04
Abstract:
Low melting point compositions, comprising a mixture of diisocyanate isomers having the diphenylethane structure, and containing by weight about:35 to 55% of 2,4' isomer,15 to 40% of 4,4' isomer,10 to 25% of 2,2' isomer,3 to 10% of 3,4' isomer, and3 to 8% of 2,3' isomer;to the method of making such compositions by the nitration of aromatic diphenylethane rings, followed by a hydrogenation and phosgenation; and polyurethanes formed utilizing such compositions.
Public/Granted literature
- US5758968A Optically based method and apparatus for detecting a phase transition temperature of a material of interest Public/Granted day:1998-06-02
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