(12) International Application Status Report

Received at International Bureau: 11 July 2018 (11.07.2018)

Information valid as of: 03 September 2018 (03.09.2018)

Report generated on: 25 March 2019 (25.03.2019)

(10) Publication number: (43) Publication date: (26) Publication language:
WO 2019/00921010 January 2019 (10.01.2019) Japanese (JA)

(21) Application number: (22) Filing date: (25) Filing language:
PCT/JP2018/02487729 June 2018 (29.06.2018) Japanese (JA)

(31) Priority number(s): (32) Priority date(s): (33) Priority status:
2017-130672 (JP)03 July 2017 (03.07.2017) Priority document received (in compliance with PCT Rule 17.1)

(51) International Patent Classification:
C09D 11/322 (2014.01); B41J 2/01 (2006.01); B41M 5/00 (2006.01)

(71) Applicant(s):
KAO CORPORATION [JP/JP]; 14-10, Nihonbashi Kayabacho 1-chome, Chuo-ku, Tokyo 1038210 (JP) (for all designated states)

(72) Inventor(s):
INOUE, Masashi; c/o Kao Corporation Research Laboratories, 1334, Minato, Wakayama-shi, Wakayama 6408580 (JP)
KAWATA, Daiki; c/o Kao Corporation Research Laboratories, 1334, Minato, Wakayama-shi, Wakayama 6408580 (JP)

(74) Agent(s):
KATAOKA, Makoto; OHTANI PATENT OFFICE, Toranomon ES Bldg. 7F., 25-2, Toranomon 3-chome, Minato-ku, Tokyo 1050001 (JP)

(54) Title (EN): AQUEOUS INK
(54) Title (FR): ENCRE AQUEUSE
(54) Title (JA): 水系インク

(57) Abstract:
(EN): The present invention relates to an aqueous ink which contains water-insoluble crosslinked polymer particles (A) containing at least a pigment, a polymer emulsion (B) and water, and wherein: a water-insoluble crosslinked polymer that constitutes the crosslinked polymer particles (A) is obtained by crosslinking a polymer which has a constituent unit derived from a carboxylic acid monomer having an acid value of 200 mgKOH/g or more and a constituent unit derived from a hydrophobic monomer by means of an epoxy compound; and a polymer that constitutes the polymer emulsion (B) contains a constituent unit derived from a carboxylic acid monomer and a constituent unit derived from a hydrophobic monomer. This aqueous ink exhibits excellent ejection stability and image fastness, while maintaining print density.
(FR): La présente invention concerne une encre aqueuse qui contient des particules de polymère réticulé insoluble dans l'eau (A) contenant au moins un pigment, une émulsion de polymère (B) et de l'eau. Le polymère réticulé insoluble dans l'eau qui constitue les particules de polymère réticulé (A) est obtenu par réticulation d'un polymère qui a un motif constitutif dérivé d'un monomère acide carboxylique ayant un indice d'acide supérieur ou égal à 200 mg KOH/g et un motif constitutif dérivé d'un monomère hydrophobe au moyen d'un composé époxy ; et le polymère qui constitue l'émulsion de polymère (B) contient un motif constitutif dérivé d'un monomère acide carboxylique et un motif constitutif dérivé d'un monomère hydrophobe. Cette encre aqueuse présente une excellente stabilité à l'éjection et une excellente solidité d'image, tout en conservant la densité d'impression.
(JA): 少なくとも顔料を含有する水不溶性架橋ポリマー粒子(A)と、ポリマーエマルジョン(B)と、水とを含有する水系インクであって、架橋ポリマー粒子(A)を構成する水不溶性架橋ポリマーが、酸価が200mgKOH/g以上であるカルボン酸モノマー由来の構成単位と疎水性モノマー由来の構成単位とを有するポリマーをエポキシ化合物で架橋してなるものであり、ポリマーエマルジョン(B)を構成するポリマーが、カルボン酸モノマー由来の構成単位と疎水性モノマー由来の構成単位とを含有する、印字濃度を維持しつつ、吐出安定性、画像堅牢性に優れた水系インクに関する。

International search report:
Received at International Bureau: 03 September 2018 (03.09.2018) [JP]

International Report on Patentability (IPRP) Chapter II of the PCT:
Not available

(81) Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
European Patent Office (EPO) : AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
African Intellectual Property Organization (OAPI) : BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG
African Regional Intellectual Property Organization (ARIPO) : BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW
Eurasian Patent Organization (EAPO) : AM, AZ, BY, KG, KZ, RU, TJ, TM