Pressure sensitive record material employing diaryl alkane solvents
AssigneeNippon Petrochemicals Company, Limited
InventorsAtsushi Sato, Yoshiaki Aida, Isoo Shimizu
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Abstract
A solvent for the pressure sensitive record material which consists of a normally liquid compound having 13 to 18 Carbon atoms and being represented by the following general formula: ##SPC1## In which each of R.sub.1 to R.sub.5 is hydrogen, methyl group or etyl group R.sub.6 is hydrogen, methyl, ethyl, iso-propyl, n-propyl, tert-buthyl or sec-buthyl group; and the preparation method of the above solvent from styrene and C.sub.7 - C.sub.10 aromatic hydrocarbons using sulfuric acid as the catalyst.
Claims1
A pressure sensitive record material which comprises a paper sheet coated with microcapsules holding internally a liquid containing a dye-precursor and at least one compound represented by the general formula:
- in which R.sub.1 and R.sub.2 are hydrogen;
- R.sub.3 is methyl;
- R.sub.4 and R.sub.5 are hydrogen, methyl or ethyl;
- R.sub.6 is an alkyl group selected from methyl, ethyl, n-propyl, isopropyl, sec-butyl and tert-butyl, and the total carbon atom number of R.sub.4, R.sub.5 and R.sub.6 is 1 - 4.
Dependencies are inferred from the claim text.