US4940749A
Expired / Lapsed
US
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Carbon black-graft polymer, method for production thereof, and use thereof
Assignee: Nippon Shokubai Co Ltd
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Filing: 1989-06-29
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Granted: 1990-07-10
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Expires: 2009-06-29
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 balck. The polymer can be used as a toner for electrostatically charged image, resin composition, coating composition, ink for thermographic transer, coating gent for magnetic recording medium, rubber composition, and carbon black dispersion and the like.
Inventors
- 👤 Yoshikuni Mori
- 👤 Mitsuo Kushino
- 👤 Hayato Ikeda
- 👤 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 11:13
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: 30
Claim 1
Independent Claim
54 words
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, 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
54 words
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, 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
29 words
A carbon black-graft polymer according to claim 1, wherein said polymer possessing a reactive group is a polymer selected from the group consisting of vinyl polymers, polyesters, and polyethers.
Claim 4
Dependent Claim
39 words
A carbon black-graft polymer 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 5
Dependent Claim
39 words
A carbon black-graft polymer according to claim 1, wherein the proportion of said polymer possessing a reactive group falls in the range of 5 to 1,000 parts by weight relative to 100 parts by weight of said carbon black.
Claim 6
Dependent Claim
38 words
A carbon black-graft polymer according to claim 1, wherein said polymer possessing a reactive group possesses within the molecular unit thereof at least one group selected from the class consisting of aziridine group, oxazoline group, and N-hydroxyalkylamide group.
Claim 7
Dependent Claim
18 words
A carbon black-graft polymer according to claim 5, wherein said polymer possesses one reactive group on the average.
Claim 8
Dependent Claim
18 words
A carbon black-graft polymer according to claim 6, wherein said reactive group is aziridine group or oxazoline group.
Claim 9
Dependent Claim
19 words
A carbon black-graft polymer according to claim 1, wherein said polymer possessing a reactive group possesses a thioepoxy group.
Claim 10
Dependent Claim
18 words
A carbon black-graft polymer according to claim 8, wherein said polymer possesses one reactive group on the average.
Claim 11
Dependent Claim
21 words
A carbon black-graft polymer according to claim 8, wherein the pH value of said carbon black is not more than 8.
Claim 12
Dependent Claim
21 words
A carbon black-graft polymer according to claim 8, wherein the pH value of said carbon black is not more than 6.
Claim 13
Dependent Claim
23 words
A carbon black-graft polymer according to claim 1, wherein said polymer possesses within the molecular unit thereof one reactive group on the average.
Claim 14
Dependent Claim
19 words
A carbon black dispersion, having dispersed in a dispersion medium a carbon black-graft polymer set forth in claim 1.
Claim 15
Dependent Claim
37 words
A carbon black dispersion according to claim 13, 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 16
Dependent Claim
27 words
A carbon black dispersion according to claim 13, wherein said dispersion medium is at least one member selected from the group consisting of water and organic dispersions.
Claim 17
Independent Claim
73 words
A method for the production of a carbon black-graft polymer, which comprises 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 at a temperature in the range of 20° to 350° C. wherein said polymer possess a number average molecular weight in the range of 2000 to 10000.
Claim 18
Independent Claim
73 words
A method for the production of a carbon black-graft polymer, which comprises 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 at a temperature in the range of 20° to 350° C. wherein said polymer possess a number average molecular weight in the range of 2000 to 10000.
Claim 19
Dependent Claim
36 words
A method according to claim 16, wherein said carbon black and said polymer possessing reactive group are kneaded at a torque value in the range of 0.01 to 50 Kg.m per 50 cc of total amount.
Claim 20
Dependent Claim
26 words
A method according to claim 16, wherein said polymer possessing a reactive group has a number average molecular weight in the range of 500 to 1,000,000.
Claim 21
Dependent Claim
27 words
A method according to claim 18, wherein said polymer possessing a reactive group is a polymer selected from the group consisting of vinyl polymers, polyesters, and polyethers.
Claim 22
Dependent Claim
37 words
A method according to claim 16, 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 23
Dependent Claim
37 words
A method according to claim 16, wherein the proportion of said polymer possessing a reactive group falls in the range of 5 to 1,000 parts by weight relative to 100 parts by weight of said carbon, black.
Claim 24
Dependent Claim
19 words
A method according to claim 18, wherein the reaction temperature is in the range of 50° to 250° C.
Claim 25
Dependent Claim
27 words
A method according to claim 18, wherein said copolymer possessing a reactive group possesses selected from the class consisting of aziridine group, oxazoline group, and N-hydroxyalkylamide group.
Claim 26
Dependent Claim
16 words
A method according to claim 23, wherein said reactive group is aziridine group or oxazoline gorup.
Claim 27
Dependent Claim
21 words
A method according to claim 18, wherein said polymer possessing a reactive group possesses an epoxy group or a thioepoxy group.
Claim 28
Dependent Claim
14 words
A method according to claim 25, wherein said reactive group is an epoxy group.
Claim 29
Dependent Claim
19 words
A method according to claim 25, wherein the pH value of said carbon black is not more than 8.
Claim 30
Dependent Claim
19 words
A method according to claim 25, wherein the pH value of said carbon black is not more than 6.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
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