摘要:
A mechanochromic coating composition is disclosed comprising a polymeric network incorporating a plurality of ring-opening mechanophores each bound at two positions thereof within said polymeric network.
摘要:
Disclosed are novel crystal of the fluoran compound represented by the formula (I) ##STR1## , characterized by a specific X-ray diffraction diagram; preparation process thereof; and recording materials comprising the crystal.
摘要:
WHEREIN N IS AN INTEGER OF 1 TO 4; R1 and R2 represent an alkyl group having 1 to 4 carbon atoms or a phenyl group; R3 represents a hydrogen atom, an alkoxyl group wherein the alkyl group is an alkyl group having 1 to 4 carbon atoms, an alkoxycarbonyl group wherein the alkyl group is an alkyl group having 1 to 4 carbon atoms or a halogen atom. A novel color forming material used in a pressure sensitive copying paper comprises
摘要:
A record material utilizing the color forming reaction between a substantially colorless chromogenic material and an electron accepting reactant material is disclosed. The colorless chromogenic material used comprises a mixture of the first component consisting of at least one specified phthalide compound having two vinyl linkages and the second component of another kind of chromogenic material which is different from said first component. The first component of the chromogenic material is used in an amount of 5 to 80%, preferably 7 to 50%, by weight with respect to the amount of the second component and in such an amount that the reflectance at any wavelength within the range of 580 nm to 880 nm, preferably within the range of 500 to 880 nm of color images developed by said color forming reaction is less by at least 55% than that of said record material before color developing.
摘要:
A benzopyranothiazole of the formula ##STR1## wherein each of R.sub.1 and R.sub.2 independently represents hydrogen, alkyl of not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or represents cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl or lower alkoxy, or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic radical or a N-carbazolyl radical, Q represents hydrogen, lower alkyl, benzyl or groups of the formulae (1a) or (1b) ##STR2## each of X, X.sub.1 and X.sub.2 represents hydrogen, halogen, lower alkyl or lower alkoxy, each of Y.sub.1, Y.sub.2, Y'.sub.1 and Y'.sub.2 represents hydrogen, alkyl of not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or represents cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl or lower alkoxy, or each of the pair of substituents Y.sub.1 and Y.sub.2 and Y'.sub.1 and Y'.sub.2, together with the nitrogen atom to said pair is attached, independently represents a 5- or 6-membered heterocyclic radical or a N-carbazolyl radical and the ring A is unsubstituted or substituted by halogen, nitro, lower alkyl, lower alkoxy, phenoxy or an amino group which is unsubstituted or substituted by lower alkyl, phenyl or benzyl; these compounds are particularly useful as color formers which give intense red to blue color shades of excellent light fastness when they are brought into contact with an electron-accepting co-reactant.
摘要:
Spiropyrans based on 1,2,3,4-tetrahydroquinoline compounds, a process for their manufacture and their use as dye-forming components in copying processes.
摘要:
Novel imidomethyl or amidomethyl derivatives of 1,3,3trimethylindolino-spiropyran are produced by reacting a 1,3,3trimethylindolino-spiropyran derivative with an imidomethylating or amidomethylating agent in the presence of a condensing agent and optionally in a solvent. These novel compounds are adapted to be used as a coloring matter for pressure sensitive copy papers and particularly as one component of a coloring matter for black pressure sensitive copy papers.
摘要:
An indolinospiropyrane compound of the formula ##STR1## wherein R.sub.1 represents alkyl which has at most 12 carbon atoms and is unsubstituted or substituted by halogen, hydroxyl, cyano, lower alkoxy or lower alkyl-carbonyloxy, or cycloalkyl, phenyl or benzyl or phenyl or benzyl which are substituted by halogen, nitro, lower alkyl or lower alkoxy,R.sub.2 represents hydrogen, alkyl which has at most 12 carbon atoms and is unsubstituted or substituted by halogen, hydroxyl, cyano, lower alkoxy or lower alkyl-carbonyloxy, or cycloalkyl or benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, orR.sub.1 and R.sub.2, together with the nitrogen atom which links them, represent a 5-membered or 6-membered heterocyclic radical,X represents alkyl which has at most 12 carbon atom and is unsubstituted or substituted by halogen, unsubstituted or substituted benzyl or phenyl or an unsubstituted or substituted heterocyclic radical,Y represents alkyl which has at most 12 carbon atoms and is unsubstituted or substituted by halogen, cyano or lower alkoxy, or benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy,Z represents hydrogen, halogen or lower alkyl andV.sub.1 and V.sub.2 each represent lower alkyl, cycloalkyl or benzyl, or conjointly represent alkylene, andthe ring A is unsubstituted or substituted by halogen, nitro, cyano, trifluoromethyl, lower alkyl, lower alkoxy, lower alkoxy-carbonyl, phenoxy, amino, lower alkylamino or N-lower alkyl-carbonylamino; these compounds are distinguished by an outstanding storage stability and are particularly useful as color formers which give intense orange, red or violet color shades of excellent light fastness when they are brought into contact with an electron-accepting coreactant.
摘要:
A pressure-sensitive recording material which comprises a substrate bearing a dye-forming component and a binder. The dye-forming component is a spirodipyran of the formula ##STR1## where A is the radical of a fused benzene or naphthalene ring (which rings may or may not be substituted), R.sup.1 is alkyl of 1 to 16 carbon atoms, substituted or unsubstituted phenyl or phenalkyl of 7 to 10 carbon atoms, R.sup.2 is H or together with R.sup.1 is a trimethylene or tetramethylene bridge which is unsubstituted or substituted by from 1 to 3 alkyl, R.sup.3 is benzyl or .beta.-phenylethyl and R.sup.4 is benzyl, .beta.-phenylethyl or substituted or unsubstituted phenyl, or R.sup.3 is alkyl of 1 to 4 carbon atoms and R.sup.4 is substituted or unsubstituted phenyl or R.sup.3 is benzyl and R.sup.4 is .beta.-cyanoethyl. The recording materials give violet to bluish green colorations (copies) only on paper coated with an electron acceptor.
摘要:
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.