Invention Grant
- Patent Title: 7,7'-Diamino derivatives of 2,2'-spirodibenzopyranes
- Patent Title (中): 7,7 {40-二氨基衍生物2,2(40-螺二苯并吡喃)
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Application No.: US773337Application Date: 1977-03-01
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Publication No.: US4110348APublication Date: 1978-08-29
- Inventor: Hans Baumann , Andreas Oberlinner
- Applicant: Hans Baumann , Andreas Oberlinner
- Applicant Address: DE Ludwigshafen
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DE Ludwigshafen
- Priority: DE2611600 19760319
- Main IPC: B41M5/15
- IPC: B41M5/15 ; C07D493/10 ; C07D311/02
Abstract:
Dye intermediates of the formula ##STR1## where R.sup.1 is hydrogen, alkyl of 1 to 12 carbon atoms, phenyl which is unsubstituted or substituted by alkyl of 1 to 4 carbon atoms, methoxy, ethoxy, chlorine or bromine, or phenylalkyl of 7 to 10 carbon atoms, R.sup.2 is hydrogen or R.sup.1 and R.sup.2 together are dimethylene, trimethylene or tetramethylene, which are unsubstituted or substituted by alkyl of 1 to 12 carbon atoms, R.sup.3 and R.sup.5 are hydrogen, alkyl of 1 to 12 carbon atoms, cyano-, chlorine-, methoxy- or ethoxy-substituted alkyl of 2 to 4 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, phenylalkyl of 7 to 10 carbon atoms or trimethylene which is unsubstituted or substituted by 1 to 3 methyl and is bonded to the carbon atom in the 6-position or 6'-position of the benzene ring, R.sup.4 and R.sup.6 are alkyl of 1 to 12 carbon atoms, cyano-, chlorine-, methoxy- or ethoxy-substituted alkyl of 2 to 4 carbon atoms, phenylalkyl of 7 to 10 carbon atoms, phenyl which is unsubstituted or substituted by alkyl of 1 to 4 carbon atoms, chlorine or bromine, or trimethylene bonded to the carbon atom in the 8-position or 8'-position of the benzene ring, or one or both of the groups ##STR2## are a pyrrolidine, piperidine, morpholine, thiomorpholine, N'-alkylpiperazine (alkyl being of 1 to 4 carbon atoms) or iso-indoline radical, and the substituents R.sup.3, R.sup.4, R.sup.5 and R.sup.6 may be identical or different and the rings A and A' may be substituted by alkyl of 1 to 3 carbon atoms.The dye intermediates give deep bluish-green to green colorations with electron-attracting substances and may be used for the manufacture of pressure-sensitive recording materials.
Public/Granted literature
- US5833760A Apparatus and method for cleaning semiconductor devices without leaving water droplets Public/Granted day:1998-11-10
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