Title:
【発明の名称】自動車用耐チッピング性水性塗料組成物及びそれからなる耐チッピング性塗膜並びにその形成方法
Document Type and Number:
Japanese Patent JP2920026
Kind Code:
B2
Abstract:
A method for forming a chipping-resistant film, a chipping resistant composition and coated articles containing the chipping-resistant film are disclosed. The method includes applying a water-based chipping-resistant composition in either (1) a coating process including electrodeposition, intermediate coating, and topcoating to form (a) a film disposed between an electrodeposited film and an intermediate-coated film, or (b) a film disposed between an intermediate-coated film and a topcoated film; or (2) a coating process including electrodeposition coating and topcoating to form (c) a film disposed between an electrodeposited film and a topcoated film. The water-based, chipping-resistant composition includes: (A) a modified ethylenical polymer which is obtained from an ethylene monomer and an ethylenically unsaturated monomer containing a carboxyl group and which has been made water-dispersible by the addition of a base, and in which at least the backbone of the ethylenical polymer molecule has carboxyl groups bonded thereto and derived from the ethylenically unsaturated monomer, the total amount of the carboxyl groups being not less than 10% by weight based on the amount of the ethylenical polymer; and (B) a water-based polyurethane resin, where the proportion of component (A) to component (B) is from 10/90 to 50/50 by weight.
Inventors:
TANIGAMI HAJIME
MAJIMA HIROSHI
MAJIMA HIROSHI
Application Number:
JP19004492A
Publication Date:
July 19, 1999
Filing Date:
June 24, 1992
Export Citation:
Assignee:
NIPPON PEINTO KK
International Classes:
B05D5/00; B05D7/14; C09D5/00; C09D5/08; C09D175/04; (IPC1-7): C09D175/04; B05D5/00; B05D7/14; C09D5/00
Domestic Patent References:
| JP2110149A | ||||
| JP6390575A | ||||
| JP352973A |
Attorney, Agent or Firm:
Takaishi Tachibana