Title:
METHOD FOR PREPARING CATIONIC ELECTRODEPOSITION COATING COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2016/143706
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a method for preparing a cationic electrodeposition coating composition that contains a bismuth compound and exhibits excellent coating material stability, curability, coating film appearance and the like.
The present invention provides a method for preparing a cationic electrodeposition coating composition, which comprises a step for mixing a resin emulsion (i) and a pigment-dispersed paste, and wherein: the resin emulsion (i) contains an aminated resin (A) and a blocked isocyanate curing agent (B); the pigment-dispersed paste contains a bismuth mixture (C) that is obtained by mixing a bismuth compound (c1) and an organic acid (c2) in advance, a pigment-dispersed resin (D), an amine-modified epoxy resin emulsion (ii) that contains an amine-modified epoxy resin (E), and a pigment (F); the pigment-dispersed resin (D) has a hydroxyl number of 20-120 mgKOH/g; and the amine-modified epoxy resin (E) has a hydroxyl number of 150-650 mgKOH/g.
Inventors:
MIYAMAE NOBUHIRO (JP)
KOTANI MASAYUKI (JP)
OHARA TETSUYA (JP)
KOTANI MASAYUKI (JP)
OHARA TETSUYA (JP)
Application Number:
PCT/JP2016/056850
Publication Date:
September 15, 2016
Filing Date:
March 04, 2016
Export Citation:
Assignee:
NIPPON PAINT AUTOMOTIVE COATINGS CO LTD (JP)
International Classes:
C09D163/00; C09D5/44; C09D7/12; C09D175/04; C25D13/06
Foreign References:
| JP2013056961A | 2013-03-28 | |||
| JP2004339524A | 2004-12-02 | |||
| JP2015187199A | 2015-10-29 |
Other References:
See also references of EP 3266842A4
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
Mutsumi Sameshima (JP)
Mutsumi Sameshima (JP)
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