Invention Grant
- Patent Title: Reversibly thermochromic compositions
- Patent Title (中): 可逆热变色组合物
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Application No.: US12308517Application Date: 2007-06-20
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Publication No.: US08277695B2Publication Date: 2012-10-02
- Inventor: Walter Fischer , Abdel-Ilah Basbas , Martin Brunner , Rolf Benz
- Applicant: Walter Fischer , Abdel-Ilah Basbas , Martin Brunner , Rolf Benz
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agent Tyler A. Stevenson
- Priority: EP06115941 20060623
- International Application: PCT/EP2007/056132 WO 20070620
- International Announcement: WO2007/147847 WO 20071227
- Main IPC: C09K9/00
- IPC: C09K9/00 ; G02F1/00 ; C07C315/00 ; C07C317/00
Abstract:
A reversible thermochromic system comprising a) a compound of the formula (IA) or a tautomer thereof or a compound of the formula (IB) or a tautomer thereof (IA) (IB) wherein R1 is C1-C18alkyl, C2-C18alkenyl, C3-C12cycloalkyl, C3-C12cycloalkyl substituted by 1, 2 or 3 C1-C4alkyl; phenyl, phenyl substituted by 1, 2 or 3 C1-C4alkyl; or C7-C12phenylalkyl; R2 is hydrogen or a group —SO2—R; R3 and R4 independently of one another are hydrogen, C1-C18alkyl, C2-C18alkenyl, C3-C12cycloalkyl, C3-C12cycloalkyl substituted by 1, 2 or 3 C1-C4alkyl; phenyl, phenyl substituted by 1, 2 or 3 C1-C4alkyl; or C7-C12phenylalkyl; and R is C1-C18alkyl, C2-C18alkenyl, C3-C12cycloalkyl, C3-C12cycloalkyl substituted by 1, 2 or 3 C1-C4alkyl; phenyl, phenyl substituted by 1, 2 or 3 C1-C4alkyl; or C7-C12phenylalkyl; and b) a compound containing a group of the formula (III).
Public/Granted literature
- US20110180767A1 Reversibly thermochromic compositions Public/Granted day:2011-07-28
Information query
