Patent US4994520A successfully refreshed from Google Patents.
US4994520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black-graft polymer, method for production thereof, and use thereof
Assignee: Nippon Shokubai Co Ltd
•
Filing: 1990-06-06
•
Granted: 1991-02-19
•
Expires: 2010-06-06
Abstract
Abstract A carbon black-graft polymer, produced by causing a polymer possessing within the molecular unit thereof at least one reactive group selected from the class consisting of aziridine group, oxazoline group. N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black. The polymer can be used as a toner for electrostatically charged image, resin composition, coating composition, ink for thermographic transfer, coating agent for magnetic recording medium, rubber composition, and carbon black dispersion and the like.
Inventors
- 👤 Yoshikuni Mori
- 👤 Mitsuo Kushino
- 👤 Hayato Ideda
- 👤 Nobuaki Urashima
- 👤 Masuji Izubayashi
- 👤 Shigeru Tanimori
- 👤 Yoshihiro Arita
- 👤 Kiyoshi Kawamura
- 👤 Kenji Minami
- 👤 Yoshinori Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:11
CPC Classifications
C; C08; C08F; C08F255/00; B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/392; B41M5/395; C08F292/00; C08G; C08G83/00; C08G83/001; G; G03; G03G; G03G9/00; G03G9/08; G03G9/09; G03G9/0902; G03G9/0904; G11; G11B; G11B5/00; G11B5/62; G11B5/73; G11B5/735
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
69 words
A toner for the development of images of electrostatic charge, which toner comprises a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 2
Dependent Claim
69 words
A toner for the development of images of electrostatic charge, which toner comprises a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 3
Dependent Claim
26 words
A toner according to claim 1, wherein said polymer possessing a reactive group has a number average molecular weight in the range of 500 to 1,000,000.
Claim 4
Dependent Claim
27 words
A toner according to claim 2, wherein said polymer possessing a reactive group is a polymer selected from the group consisting of vinyl polymers, polyesters, and polyethers.
Claim 5
Dependent Claim
37 words
A toner according to claim 1, wherein the proportion of said polymer possessing a reactive group falls in the range of 1 to 3,000 parts by weight relative to 100 parts by weight of said carbon black.
Claim 6
Dependent Claim
25 words
A toner according to claim 1, wherein a content of carbon black in the tonner is in the range of 1 to 20% by weight.
Claim 7
Dependent Claim
69 words
A thermosetting resin composition which comprises incorporating carbon black graft polymer in a thermosetting resin, said polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 8
Dependent Claim
69 words
A thermosetting resin composition which comprises incorporating carbon black graft polymer in a thermosetting resin, said polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 9
Dependent Claim
41 words
A thermosetting resin composition according to claim 6, wherein said carbon black-graft polymer is incorporated in an amount in the range of 0.05 to 50% by weight, based on the total amount of said thermosetting resin and said carbon black-graft polymer.
Claim 10
Dependent Claim
45 words
A thermosetting resin composition according to claim 7, wherein said thermosetting resin is one member selected from the group consisting of an unsaturated polyester resin, an epoxy resin, a diallyl phthalate resin, a phenol resin, an amino resin, a polyimide resin and a polyurethane resin.
Claim 11
Dependent Claim
70 words
A thermoplastic resin composition which comprises carbon black-graft polymer incorporated in a thermoplastic resin, said carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 12
Dependent Claim
70 words
A thermoplastic resin composition which comprises carbon black-graft polymer incorporated in a thermoplastic resin, said carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 13
Dependent Claim
31 words
A thermoplastic resin composition accoring to claim 9, wherein said carbon black-graft polymer is contained in a concentration in the range of 0.001 to 50% by weight in said thermoplastic resin.
Claim 14
Dependent Claim
35 words
A thermoplastic resin composition according to claim 9, wherein said thermoplastic resin is selected from the group consisting of polyesters, styrene polymers, polyolefins, vinyl chloride polymers, polyurethanes, acrylic polymers, polycarbonates, butyral resins, polyimides, and polyamides.
Claim 15
Dependent Claim
15 words
A thermoplastic resin composition according to claim 9, wherein said thermoplastic resin is a polyester.
Claim 16
Dependent Claim
64 words
A coating composition, having incorporated in a binder a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 17
Dependent Claim
64 words
A coating composition, having incorporated in a binder a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 18
Dependent Claim
37 words
A coating composition according to claim 13, wherein the carbon black contained in said carbon black-graft polymer is in the range of 1 to 300 parts by weight, based on 100 parts by weight of said binder.
Claim 19
Dependent Claim
28 words
A coating composition according to claim 13, wherein said binder is at least one resin selected from the group consisting of thermoplastic resins, thermosetting resins, and reactive resins.
Claim 20
Dependent Claim
66 words
A carbon black dispersion, having dispersed in a dispersion medium a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 21
Dependent Claim
66 words
A carbon black dispersion, having dispersed in a dispersion medium a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 22
Dependent Claim
37 words
A carbon black dispersion according to claim 16, wherein the amount of the carbon black in said carbon black-graft polymer is in the range of 1 to 80% by weight, based on the amount of said dispersion.
Claim 23
Dependent Claim
27 words
A carbon black dispersion according to claim 16, wherein said dispersion medium is at least one member selected from the group consisting of water and organic dispersions.
Claim 24
Dependent Claim
63 words
A rubber composition, having incorporated in rubber a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 25
Dependent Claim
63 words
A rubber composition, having incorporated in rubber a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 26
Dependent Claim
34 words
A rubber composition according to claim 19, wherein the amount of said carbon black-graft polymer incorporated therein falls in the range of 1 to 90% by weight, based on the amount of said composition.
Claim 27
Dependent Claim
65 words
A thermographic transfer ink, which comprises in a binder a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 28
Dependent Claim
65 words
A thermographic transfer ink, which comprises in a binder a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 29
Dependent Claim
39 words
A thermographic transfer ink according to claim 21, wherein the amount of the carbon black in said carbon black-graft polymer incorporated therein falls in the range of 1 to 40% by weight, based on the amount of said ink.
Claim 30
Dependent Claim
69 words
A thermographic transfer ink ribbon coating agent, which comprises in a liquid medium a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 31
Dependent Claim
69 words
A thermographic transfer ink ribbon coating agent, which comprises in a liquid medium a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 32
Dependent Claim
39 words
A thermographic transfer ink ribbon coating agent accoring to claim 23, wherein the amount of said carbon black-graft polymer incorporated therein falls in the range of 1 to 60% by weight, based on the amount of said coating agent.
Claim 33
Dependent Claim
66 words
A back-coating agent for a magnetic recording medium, which comprises a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 34
Dependent Claim
66 words
A back-coating agent for a magnetic recording medium, which comprises a carbon black-graft polymer produced by causing a polymer possessing one to two reactive groups on the average selected from the class consisting of aziridine group, oxazoline group, N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black, wherein said polymer possesses a number average molecular weight in the range of 2,000 to 100,000.
Claim 35
Dependent Claim
35 words
A back-coating agent according to claim 25, wherein the amount of said carbon black-graft polymer incorporated therein falls in the range of 1 to 60% by weight, based on the amount of said coating agent.
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) | 1994-02-18 | 1994-08-20 | 1995-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-18 | 1998-08-20 | 1999-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-18 | 2002-08-20 | 2003-02-19 | $7700.00 | Window Closed / Lapsed |