Patent US4208318A successfully refreshed from Google Patents.
US4208318A
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Method for coloring thermoplastic resins
Assignee: DIC Corp
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Filing: 1978-06-13
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Granted: 1980-06-17
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Expires: 1998-06-13
Abstract
Abstract A thermoplastic resin is colored with a carbon black pigment in the presence of a sulfonamide-substituted metal phthalocyanine dyestuff of the general formula <IMAGE> wherein MePc is a metal phthalocyanine residue, R1 is a hydrogen atom or an alkyl group, R2 is an alkyl group, R3 is a hydrogen atom or an alkoxyalkyl group, R4 is an alkoxyalkyl group, m is an integer of 0 to 4, n is an integer of 0 to 4, and m+n is an integer of 1 to 4. The use of the specified metal phthalocyanine dyestuff affords a completely black or bluish black thermoplastic resin free from a reddish hue which is inherent to coloration with carbon black.
Inventors
- 👤 Seibei Ono
- 👤 Koichi Shibuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:15
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08K3/00; C08K3/02; C08K3/04; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/24; C09B47/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A method for mass coloring a thermoplastic resin with a carbon black pigment, which comprises conjointly using a sulfonamide-substituted metal phthalocyanine dyestuff expressed by the general formula ##STR17## wherein MePc is a metal phthalocyanine residue, R 1 is a hydrogen atom or an alkyl group, R 2 is an alkyl group, R 3 is a hydrogen atom or an alkoxyalkyl group, R 4 is an alkoxyalkyl group, m is an integer of 0 to 4, n is an integer of 0 to 4, and m+n is an integer of 1 to 4, thereby to remove a reddish hue peculiar to coloration by carbon black.
Claim 2
Independent Claim
104 words
A method for mass coloring a thermoplastic resin with a carbon black pigment, which comprises conjointly using a sulfonamide-substituted metal phthalocyanine dyestuff expressed by the general formula ##STR17## wherein MePc is a metal phthalocyanine residue, R 1 is a hydrogen atom or an alkyl group, R 2 is an alkyl group, R 3 is a hydrogen atom or an alkoxyalkyl group, R 4 is an alkoxyalkyl group, m is an integer of 0 to 4, n is an integer of 0 to 4, and m+n is an integer of 1 to 4, thereby to remove a reddish hue peculiar to coloration by carbon black.
Claim 3
Dependent Claim
96 words
The method of claim 1 wherein in the formula expressing the sulfonamide-substituted metal phthalocyanine dyestuff, R 1 is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, R 2 is an alkyl group having 1 to 30 carbon atoms, R 3 is a hydrogen atom or an alkoxyalkyl group having 3 to 34 carbon atoms in total with the alkoxy moiety having at most 30 carbon atoms, and R 4 is an alkoxyalkyl group having 3 to 34 carbon atoms in total with the alkoxy moiety having at most 30 carbon atoms.
Claim 4
Dependent Claim
96 words
The method of claim 1 wherein in the formula expressing the sulfonamide-substituted metal phthalocyanine dyestuff, R 1 is a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, R 2 is an alkyl group having 1 to 18 carbon atoms, R 3 is a hydrogen atom or an alkoxyalkyl group having 3 to 22 carbon atoms in total with the alkoxy moiety having 1 to 18 carbon atoms, and R 4 is an alkoxyalkyl group having 3 to 22 carbon atoms in total with the alkoxy moiety having 1 to 18 carbon atoms.
Claim 5
Independent Claim
31 words
The method of any one of claims 1 to 3 wherein the amount of the sulfonamide-substituted phthalocyanine dyestuff is 2 to 50% based on the weight of the carbon black pigment.
Claim 6
Dependent Claim
21 words
The method of claim 4 wherein in the formula expressing the sulfonamide-substituted metal phthalocyanine dyestuff, MePc is a copper phthalocyanine residue.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein the thermoplastic resin is a polyamide, an aromatic linear polyester or a styrene polymer.
Claim 8
Dependent Claim
37 words
The method of claim 1 for mass coloring a thermoplastic resin in a black color wherein the amount of the sulfonamide-substituted metal phthalocyanine dyestuff is about 5 to 8% by weight based on the carbon black pigment.
Claim 9
Dependent Claim
44 words
The method of claim 1 for mass coloring a thermoplastic resin with a black color with a strong tint of blue wherein the amount of the sulfonamide-substituted phthalocyanine dyestuff is 10 to 20% by weight based on the weight of the carbon black pigment.
Claim 10
Dependent Claim
41 words
The method of claim 1 for mass coloring a thermoplastic resin in a deep bluish black color wherein the amount of the sulfonamide-substituted phthalocyanine dyestuff is about 20 to 50% by weight, based on the weight of the carbon black pigment.
Claim 11
Dependent Claim
20 words
The method of claim 1 wherein the sulfonamide-substituted phthalocyanine dyestuff is a member selected from the group consisting of ##STR18##
References Cited (Backward Citations)
US2875171A
Cited
GB823966A
Cited
US3558551A
Cited
US3532687A
Cited
US3708457A
Cited
US3909442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |