EP0384470A2
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EP
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Process for preparation of crystalline oxytitanium phthalocyanine
Assignee: Mitsubishi Chemical Corp
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Filing: 1990-02-22
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Granted: —
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Expires: 2010-02-22
Abstract
Abstract A process for the preparation of crystalline oxytitanium phthalocyanine showing a distinct diffraction peak at a Bragg angle (2ϑ± 0.2°) of 27.3° in the X-ray diffraction spectrum, which comprises mechanically pulverizing oxytitanium phthalocyanine, dispersing it in water to form a suspension, adding an organic solvent into the suspension and heating the suspension.
Inventors
- 👤 Hitoshi Ono
- 👤 Yoshiaki Kato
- 👤 Sumiko Watabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 07:40
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0014; C09B67/0016; C09B67/0025; C09B67/0026; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
53 words
A process for the preparation of crystalline oxytitanium phthalocyanine showing a distinct diffraction peak at a Bragg angle (2ϑ ± 0.2°) of 27.3° in the X-ray diffraction spectrum, which comprises mechanically pulverizing oxytitanium phthalocyanine, dispersing it in water to form a suspension, adding an organic solvent into the suspension and heating the suspension.
Claim 2
Dependent Claim
53 words
A process for the preparation of crystalline oxytitanium phthalocyanine showing a distinct diffraction peak at a Bragg angle (2ϑ ± 0.2°) of 27.3° in the X-ray diffraction spectrum, which comprises mechanically pulverizing oxytitanium phthalocyanine, dispersing it in water to form a suspension, adding an organic solvent into the suspension and heating the suspension.
Claim 3
Dependent Claim
30 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein the starting oxytitanium phthalocyanine is selected from the group of α-phase, β-phase and amorphous oxytitanium phthalocyanines.
Claim 4
Dependent Claim
48 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein the mechanical pulverization is carried out by means of a dispersing apparatus selected from the group consisting of a paint shaker, sand grind mill, ball mill, roll mill, attriter, vibration mill and colloid mill.
Claim 5
Dependent Claim
30 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein the mechanical pulverization is carried out by means of a paint shaker under a dry condition.
Claim 6
Dependent Claim
29 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein the suspension contains 2 to 50 % by weight of oxytitanium phthalocyanine dispersed in water.
Claim 7
Dependent Claim
25 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein the organic solvent is a water-insoluble aliphatic or aromatic organic solvent.
Claim 8
Dependent Claim
45 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein the organic solvent is selected from the group consisting of chloroform, dichloroethane, n-hexane, butyl acetate, monochlorobenzene, dichlorobenzene, toluene, xylene, nitrobenzene, α-chloronaphthalene and a mixture of at least two of those solvents.
Claim 9
Dependent Claim
28 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein the heat treatment is carried out at a temperature of from 30 to 100°C.
Claim 10
Dependent Claim
44 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein the crystalline oxytitanium phthalocyanine obtained after the heat treatment also show a diffraction peak(s) at a Bragg angle(s) (2ϑ ± 0.2°) of 9.7° and/or 24.1° in the X-ray diffraction spectrum.
Claim 11
Dependent Claim
43 words
A process for the preparation of crystalline oxytitanium phthalocyanine according to claim 1, wherein α-phase oxytitanium phthalocyanine is rendered to be amorphous or to show a diffraction peak or peaks at a Bragg angle (2ϑ ± 0.2°) of 27.3° by the mechanical pulverization.
References Cited (Backward Citations)
No citation records indexed.
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