EP0787777A1
Expired / Lapsed
EP
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Carbon black graft polymer, process for the production of the polymer and use thereof
Assignee: Nippon Shokubai Co Ltd
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Filing: 1996-06-14
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Granted: —
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Expires: 2016-06-14
Abstract
Abstract A carbon black graft polymer which excels in stability of dispersion in various media, coloring property, and imperviousness to light is obtained by mixing under heating a block- or graft-copolymer having a segment (A) containing a reactive group capable of reacting with a functional group on the surface of carbon black and a segment (B) different in skeletal structure from the segment (A) with carbon black. The carbon black graft polymer, by causing the graft chain thereof to incorporate therein an ethylenically unsaturated double bond and/or a carboxyl group, is enabled to manifest photosensitivity, developability with an alkali, and insulating property and acquire usefulness for a black photocurable resin composition such as, for example, the material for the formation of a black matrix particularly in a color filter.
Inventors
- 👤 Hayato Ikeda
- 👤 Nobuyuki Ando
- 👤 Yoshinobu Asako
- 👤 Kazuhiro Anan
- 👤 Tatsuhito Matsuda
- 👤 Motohiro Arakawa
- 👤 Nobuaki Ohtsuki
- 👤 Toshio Awaji
- 👤 Hironobu Toribuchi
- 👤 Mitsuo Kushino
- 👤 Keiichi Uehara
- 👤 Yoshikuni Mori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 17:47
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; C; C08; C08F; C08F292/00; C08K; C08K9/00; C08K9/08; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/324; G; G03; G03C; G03C7/00; G03C7/04; G03C7/06; G03C7/10; G03C7/12; G03F; G03F7/00; G03F7/0005; G03F7/0007; G03F7/004; G03F7/038; G03F7/0388; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08784; G03G9/08786; G03G9/09; G03G9/0902; G03G9/0904; G03G9/12; G03G9/122; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133512; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2989; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
63 words
A carbon black graft polymer, which is characterized by having an unsaturated double bond in a graft chain thereof, and which may be obtained by mixing under heating carbon black with a polymer, said polymer to be mixed having a reactive group capable of reacting with a functional group on the surface of said carbon black and has the ethylenically unsaturated double bond.
Claim 2
Dependent Claim
70 words
A carbon black graft polymer, which is characterized by having a carboxyl group in a graft chain thereof, and which may be obtained by mixing under heating carbon black with a polymer, said polymer to be mixed having a reactive group capable of reacting with a functional group on the surface of said carbon black and having a hydroxyl group, and treating the resultant reaction mixture with an acid anhydride.
Claim 3
Dependent Claim
66 words
A carbon black graft polymer, which is characterized by having a block- or graft-copolymer graft chain, and which may be obtained by mixing under heating carbon black with a block- or graft-copolymer comprising a segment (A) having a reactive group capable of reacting with a functional group on the surface of said carbon black and a segment (B) different in skeletal structure from said segment (A).
Claim 4
Dependent Claim
41 words
A carbon black graft polymer according to claim 3, wherein said block- or graft-copolymer has an ethylenically unsaturated double bond in said segment (B) thereof, and which is further characterized by said graft chain thereof having the ethylenically unsaturated double bond.
Claim 5
Dependent Claim
41 words
A carbon black graft polymer according to claim 4, wherein said unsaturated double bond had by said segment (B) is included in a side chain bound to the main chain of said segment (B) through the medium of a urethane bond.
Claim 6
Dependent Claim
79 words
A carbon black graft polymer according to claim 3 or claim 4, wherein said block- or graft-copolymer has a hydroxyl group resided in at least said segment (B) in the group consisting of said segment (A) and (B), and wherein a resultant reaction mixture from said mixing under heating of said carbon black with said block- or graft-copolymer is further treated with an acid anhydride, and which is further characterized by said graft chain thereof having a carboxyl group.
Claim 7
Dependent Claim
37 words
A carbon black graft polymer according to any of claims 1 - 6, wherein said reactive group is at least one member selected from the class consisting of epoxy group, thioepoxy group, aziridine group, and oxazoline group.
Claim 8
Dependent Claim
39 words
A carbon black graft polymer according to claim 3, wherein said segment (A) is obtained by polymerizing a vinyl type monomer composition comprising a vinyl type monomer having said reactive group, and the main chain thereof comprises carbon-carbon bonds.
Claim 9
Dependent Claim
43 words
A carbon black graft polymer according to claim 3, wherein said segment (A) is obtained by polymerizing a vinyl type monomer composition comprising a vinyl type monomer having said reactive group, and the polymer chain thereof has said reactive group and aromatic rings.
Claim 10
Dependent Claim
52 words
A carbon black graft polymer according to claim 3, wherein said segment (A) is obtained by polymerizing a vinyl type monomer composition comprising a vinyl type monomer having an aromatic ring, in an amount of not less than 50 mol% of said composition, and an vinyl type monomer having said reactive group.
Claim 11
Dependent Claim
45 words
A carbon black graft polymer according to claim 3, wherein said segment (B) has at least one member selected from the group consisting of polysiloxane type structure, poly(meth)acryl type structure, polyether structure, poly(meth)acrylonitrile structure, polyester structure, polyalkylene structure, polyamide structure, polyimide structure, and polyurethane structure.
Claim 12
Dependent Claim
31 words
A carbon black graft polymer according to any of claims 1 - 6, wherein the average particle diameter of said carbon black is in the range of 0.0005 - 0.4 µm.
Claim 13
Dependent Claim
34 words
A carbon black graft polymer according to any of claims 1 - 6, wherein 1 - 1000 parts by weight of said polymer is grafted to 100 parts by weight of said carbon black.
Claim 14
Dependent Claim
21 words
A carbon black graft polymer according to any of claims 1 - 6, wherein said carbon black has a carboxyl group.
Claim 15
Dependent Claim
30 words
A carbon black graft polymer according to any of claims 1 - 6, wherein said carbon black is an acidic carbon black having a pH value of less than 7.
Claim 16
Dependent Claim
120 words
A method for the production of the carbon black graft polymer set forth in claim 3 and improved in dispersibility in a medium aimed at dispersion, which method is characterized by mixing under heating with said carbon black, in the presence of a liquid dispersion medium formed of one of said aimed medium and a medium having a characteristic resembling to that of said aimed medium, said block- or graft-copolymer having said segment (A) containing the reactive group capable of reacting with the functional group on the surface of said carbon black and said segment (B), wherein said segment (B) contains substantially none of said reactive group and exhibits higher affinity for said liquid dispersion medium than said segment (A).
Claim 17
Dependent Claim
89 words
A method for the production of the carbon black graft polymer set forth in claim 3 and improved in dispersibility in a medium aimed at dispersion, which method is characterized by mixing under heating said block- or graft-copolymer having a segment (A) containing the reactive group capable of reacting with the functional group on the surface of carbon black and said segment (B), wherein said segment (B) contains substantially none of said reactive group and exhibits lower affinity for said carbon black than said segment (A) with carbon black.
Claim 18
Dependent Claim
117 words
A method for the production of the carbon black graft polymer set forth in claim 4 and improved in dispersibility in a medium aimed at dispersion, which method is characterized by mixing under heating with the carbon black, in the presence of a liquid dispersion medium formed of one of said aimed medium and a medium having a characteristic resembling to that of said aimed medium, said block- or graft-copolymer having the segment (A) containing the reactive group capable of reacting with the functional group on the surface of said carbon black and said segment (B) containing the unsaturated double bond, wherein said segment (B) exhibits higher affinity for said liquid dispersion medium than said segment (A).
Claim 19
Dependent Claim
178 words
A method for the production of the carbon black graft polymer set forth in claim 4 and improved in dispersibility in a medium aimed at dispersion, the method is characterized by (1) mixing under heating with said carbon black, in the presence of a liquid dispersion medium formed of said aimed medium or a medium having a characteristic resembling to said aimed medium, a block- or graft-type precursory polymer having said segment (A) containing the reactive group capable of reacting with the functional group on the surface of said carbon black and a segment (B) exhibiting higher affinity for said liquid dispersion medium than said segment (A), and then (2) causing a compound (d) to react with the carbon black having grafted thereto said precursory polymer obtained in (1) above, said compound (d) having a reactive group capable of reacting with a functional group had by said segment (B) of said block- or graft-type precursory polymer and further having the unsaturated double bond, thereby introducing the unsaturated double bond into said segment (B) of said precursory polymer .
Claim 20
Dependent Claim
33 words
A method according to claim 19, wherein said functional group had by said segment (B) is an alcoholic or phenolic hydroxyl group and said reactive group of said compound (d) is isocyanate group.
Claim 21
Dependent Claim
87 words
A method for the production of the carbon black graft polymer set forth in claim 4 and improved in dispersibility in a medium aimed at dispersion, which method is characterized by mixing under heating the block- or graft-copolymer having said segment (A) containing the reactive group capable of reacting with the functional group on the surface of said carbon black and said segment (B) containing the unsaturated double bond, wherein said segment (B) exhibits higher affinity for said carbon black than said segment (A) with carbon black.
Claim 22
Dependent Claim
151 words
A method for the production of the carbon black graft polymer set forth in claim 4 and improved in dispersibility in a medium aimed at dispersion, which method is characterized by (1) mixing under heating with the carbon black a block- or graft-type precursory polymer having the segment (A) containing the reactive group capable of reacting with the functional group on the surface of said carbon black and a segment (B) exhibiting lower affinity for said carbon black than said segment (A), and then (2) causing a compound (d) to react with the carbon black having grafted thereto said precursory polymer obtained in (1) above, said compound (d) having a reactive group capable of reacting with a functional group had by said segment (B) of said block- or graft-type precursory polymer and having the unsaturated double bond, thereby introducing the unsaturated double bond into said segment (B) of said precursory polymer.
Claim 23
Dependent Claim
143 words
A method for the production of a carbon black graft polymer set forth in claim 6 and improved in dispersibility in a medium aimed at dispersion, which method is characterized by mixing under heating with said carbon black, in the presence of a liquid dispersion medium formed of one of said aimed medium and a medium having a characteristic resembling to that of said aimed medium, said block- or graft-copolymer which has said segment (A) containing the reactive group capable of reacting with the functional group on the surface of said carbon black and said segment (B) and contains a hydroxyl group in at least said segment (B) in the group of said segment (A) and (B), wherein said segment (B) exhibits higher affinity for said liquid dispersion medium than said segment (A), and then treating the resultant reaction mixture with said anhydride,.
Claim 24
Independent Claim
71 words
A method according to any of claims 16 - 23, wherein said mixing under heating treatment is carried out in an apparatus for wet dispersion treatment comprising a vessel for holding therein a fluid under treatment, a stirrer adapted to be rotated in said vessel, a heating device accommodated in said vessel and adapted to heat said fluid under treatment, and a plurality of granular dispersion media accommodated in said vessel.
Claim 25
Dependent Claim
20 words
A photocurable resin composition, characterized by containing the carbon black polymer set forth in any of claims 1 - 6.
Claim 26
Dependent Claim
18 words
A photocurable resin composition according to claim 25, wherein said photocurable resin composition incorporates therein an alkali-soluble resin.
Claim 27
Dependent Claim
24 words
A black matrix for a color filter, characterized by being formed of a photocurable resin composition set forth in claim 25 or claim 26.
Claim 28
Dependent Claim
23 words
An ink jet grade liquid recording medium, characterized by containing the carbon black polymer set forth in any of claims 1 - 6.
Claim 29
Dependent Claim
30 words
A liquid developing agent for use in the development of an electrostatic latent image, characterized by containing the carbon black polymer set forth in any of claims 1 - 6.
Claim 30
Dependent Claim
20 words
Fibers impervious to light, characterized by containing the carbon black polymer set forth in any of claims 1 - 6.
Claim 31
Independent Claim
87 words
A method for the production of a resin composition containing carbon black, which method is characterized by melting and mixing a resin component destined to serve as a dispersion medium and carbon black in combination with a block- or graft-copolymer, said copolymer having a segment (A) containing a reactive group capable of reacting with a functional group on the surface of said carbon black and a segment (B) containing substantially none of said reactive group and exhibiting higher affinity for said resin component than said segment (A).
Claim 32
Independent Claim
65 words
A method for the treatment of minute solid particles for surfacial modification, which method is characterized by incorporating minute solid particles and a reactive polymer containing a reactive group capable of reacting with a functional group on the surface of said minute solid particles in a liquid dispersion medium, and subjecting the resultant mixture as kept in a heated state to a treatment for dispersion.
Claim 33
Dependent Claim
66 words
A method according to claim 29, wherein said treatment for dispersion is carried out in an apparatus for wet dispersion treatment comprising a vessel for holding therein a fluid under treatment, a stirrer adapted to be rotated in said vessel, a heating device accommodated in said vessel and adapted to heat said fluid under treatment, and a plurality of granular dispersing media accommodated in said vessel.
Claim 34
Dependent Claim
35 words
A method set forth in claim 32 or claim 33, wherein said treatment comprises adding 5 - 500 parts by weight of said reactive polymer to 100 parts by weight of said minute solid particles.
Claim 35
Independent Claim
31 words
A method according to any of claims 32 - 34, wherein the heating during the course of mixing is carried out at a temperature in the range of 50 - 250°C.
Claim 36
Independent Claim
21 words
A method according to any of claims 32 - 35, wherein said minute solid particles are minute particles of inorganic pigment.
Claim 37
Independent Claim
18 words
A method according to any of claims 32 - 36, wherein said minute solid particles are carbon black.
Claim 38
Independent Claim
39 words
A method according to any of claims 32 - 37, wherein the reactive group had by said reactive polymer is at least one member selected from the class consisting of epoxy group, thioepoxy group, aziridine group, and oxazoline group.
Claim 39
Independent Claim
51 words
A method according to any of claims 32 - 38, wherein the reactive polymer is a block- or graft-copolymer had of at least a segment (A) containing said reactive group in the molecular unit thereof and a segment (B) exhibiting higher affinity for said liquid dispersion medium than said segment (A).
Claim 40
Dependent Claim
46 words
A pigment-complexed polymer, obtained by using a pigment in the place of the carbon black in the carbon black graft polymer set forth in any of claims 1 - 6 and subjecting the pigment to the treatment set forth in any of claims 1 - 6.
References Cited (Backward Citations)
No citation records indexed.
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