Title:
【発明の名称】ポリ酸を基材とする防食性接着膜を有する塗装金属薄板部材、特に自動車車体、およびこの種の接着膜の塗布方法
Document Type and Number:
Japanese Patent JP3128115
Kind Code:
B2
Abstract:
A painted sheet metal component, esp. car bodywork, has an adhesive anticorrosion layer (A) directly on the metal surface under the paint. Layer (A) is made up of polyacids (I) with at least 100 COOH gps. per polymer mol., comprising: (a) homo- or co-polymers of carboxylic acids contg. double bonds, and/or (b) copolymers of carboxylic acids with vinyl cpds., and/or (c) homo- or co-polymers of carboxylic acids with functional carboxylate esters. Polyacids (I) are also combined with (d) polymers with a Tg of more than 100 degrees C and/or (e) low- mol. wt. 2-30C carboxylic acids. Application of layer (A) comprises cleaning and degreasing the metal, applying the adhesive compsn. as above in the form of an aq. soln. contg. 0.1-5 (pref. 0.2-2) wt% polyacid(s), and stabilising the coating by heating. Layer (A) has a thickness of 10-500 (pref. 50-200) nm. The polyacids in (A) are combined with phenolic, urea or epoxy resins. The first layer of paint applied after layer (A) is a filler coat. The polyacids are crosslinked via functional gps. which are not adsorbed on the substrate, either by inter- or intra-mol. crosslinking or to the adjacent paint layer. Pref., layer (A) is applied by a dipping process, opt. with electrophoretic, pref. anodic, support.
Inventors:
Ute Flammel
Flitz Metzger
Anya Keller
Wuerner Funke
Flitz Metzger
Anya Keller
Wuerner Funke
Application Number:
JP19297596A
Publication Date:
January 29, 2001
Filing Date:
July 03, 1996
Export Citation:
Assignee:
DaimlerChrysler Actien Gezershaft
International Classes:
B05D1/36; B05D3/02; B05D3/10; B05D5/00; B05D7/14; B05D7/24; B32B15/08; C08L61/04; C08L61/08; C08L61/20; C08L61/24; C08L63/00; C09D5/00; C09D5/08; C09D161/04; C09D161/08; C09D161/20; C09D163/00; C09J161/24; (IPC1-7): B05D7/14; B05D1/36; B05D3/02; B05D3/10; B05D5/00; B05D7/24; B32B15/08; C08L61/08; C08L61/24; C08L63/00; C09D5/00; C09D161/08; C09D163/00; C09J161/24
Domestic Patent References:
| JP4322771A | ||||
| JP710960A | ||||
| JP7188608A | ||||
| JP5639393B2 | ||||
| JP69675B2 | ||||
| JP6261669B2 |
Attorney, Agent or Firm:
Keinosuke Ozawa (1 person outside)