COATING AGENT FOR INK JET RECORDING PAPER AND INK JET RECORDING PAPER COATED THEREWITH

Japanese Patent JP3718150

B2

PROBLEM TO BE SOLVED: To provide a coating agent for an ink jet recording paper made of a cationic polyurethane resin equally excellent in abrasion resistance, dimensional stability at printing, heat resistance, resistance to solvents and a binder capacity to inorganic fillers or the like to say nothing of ink fixing properties and water resistance.
SOLUTION: This coating agent for an ink jet recording paper consists of (A) a constitutional unit derived from an organic polyisocyanate, (B) a constitutional unit derived from a hydroxy compound having at least two active hydrogen atoms reactive with a NCO group and (C) a constitutional unit derived from a polyhydroxy compound, the molecule of which has a tertiary amino group, which is neutralized by an acid or turned into a quaternary one by a quaternarily turning agent and, at the same time, has at least two active hydrogen atoms reactive with a NCO group and includes a cationic water-based polyurethane resin obtained by extending the chain of a cationic urethane prepolymer, the branching density of which is 0.08 to 0.25 per 1,000 atomic weight, with a polyamine compound.

JPS5579176	INK JET AT COINCIDENT GATE
JP2012116077	IMAGE FORMING DEVICE
JP6640951	Ink composition for aqueous inkjet

Naoki Yamaji
Kazuo Sato
Shuichi Wada

JP2001273675A

November 16, 2005

September 10, 2001

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Daiichi Kogyo Pharmaceutical Co., Ltd.

B41J2/01; B41M5/00; B41M5/50; B41M5/52; C08G18/12; C08G18/32; C08G18/83; D21H27/00; (IPC1-7): B41M5/00; B41J2/01; C08G18/12; C08G18/32; C08G18/83; D21H27/00

JP5320331A
JP10086505A
JP10291363A
JP11240247A
JP11268406A
JP11269243A

Sota Asahina
Kei Saki

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