US4031109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of X-form metal phthalocyanine and X-form metal free compounds
Assignee: Xerox Corp
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Filing: 1972-11-22
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Granted: 1977-06-21
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Expires: 1992-11-22
Abstract
Abstract A method for the preparation of X-form metal phthalocyanine and X-form metal-free compounds which comprises heating any suitable metal phthalocyanine polymorph or compound to from about 600° to about 650° and cooling the resulting product formed thereby is herein disclosed.
Inventors
- 👤 Clifford H. Griffiths
- 👤 Richard C. Keezer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:09
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0025; C09B67/0026; C09B67/0032; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
28 words
A method of preparing X-form metal phthalocyanine which comprises heating a metal phthalocyanine polymorph to from about 600° to about 650° C and allowing said polymorph to cool.
Claim 2
Independent Claim
28 words
A method of preparing X-form metal phthalocyanine which comprises heating a metal phthalocyanine polymorph to from about 600° to about 650° C and allowing said polymorph to cool.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein the X-form product formed as a result of said heating is rapidly cooled to from about 10° to about 40° C.
Claim 4
Dependent Claim
16 words
The method of claim 1 wherein said metal phthalocyanine polymorph is heated to about 625° C.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein said metal phthalocyanine polymorph is cooled to about 25° C after heating.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein said metal phthalocyanine polymorph is heated uniformly at a rate of about 50° C/minute to about 160° C/minute.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein said metal phthalocyanine polymorph is heated at a rate of about 100° C/minute.
Claim 8
Dependent Claim
29 words
The method of claim 1 wherein the X-form product formed as a result of said heating is cooled at a rate of about 20° C/minute to about 200° C/minute.
Claim 9
Dependent Claim
25 words
The method of claim 1 wherein the X-form product formed as a result of said heating is cooled at a rate of about 100° C/minute.
Claim 10
Dependent Claim
28 words
The process as defined in claim 1 wherein said metal phthalocyanine polymorph is selected from the group consisting of alpha metal phthalocyanine polymorphs and beta metal phthalocyanine polymorphs.
Claim 11
Independent Claim
60 words
A method of preparing X-form metal phthalocyanine which comprises heating a metal phthalocyanine polymorph selected from the group consisting of alpha copper phthalocyanine, beta copper phthalocyanine, alpha cobalt phthalocyanine, beta cobalt phthalocyanine, alpha lead phthalocyanine, beta lead phthalocyanine, alpha zinc phthalocyanine, beta zinc phthalocyanine, and mixtures thereof from about 600° to about 650° C and allowing said polymorph to cool.
Claim 12
Independent Claim
60 words
A method of preparing X-form metal phthalocyanine which comprises heating a metal phthalocyanine polymorph selected from the group consisting of alpha copper phthalocyanine, beta copper phthalocyanine, alpha cobalt phthalocyanine, beta cobalt phthalocyanine, alpha lead phthalocyanine, beta lead phthalocyanine, alpha zinc phthalocyanine, beta zinc phthalocyanine, and mixtures thereof from about 600° to about 650° C and allowing said polymorph to cool.
Claim 13
Independent Claim
43 words
A method of preparing X-form metal phthalocyanine which comprises heating a metal phthalocyanine polymorph selected from the group consisting of alpha copper phthalocyanine, beta copper phthalocyanine and mixtures thereof to from about 600° to about 650° C and allowing said polymorph to cool.
Claim 14
Independent Claim
43 words
A method of preparing X-form metal phthalocyanine which comprises heating a metal phthalocyanine polymorph selected from the group consisting of alpha copper phthalocyanine, beta copper phthalocyanine and mixtures thereof to from about 600° to about 650° C and allowing said polymorph to cool.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |