Title:
水性2成分PU系
Document Type and Number:
Japanese Patent JP2004527588
Kind Code:
A
Abstract:
The invention relates to an aqueous 2-component polyurethane (PU) coating composition comprising a vinyl polymer polyol dispersion, having a hydroxyl number between 10 and 264 mg KOH/g solid resin, an acid value (calculated from the sum of neutralized and non-neutralized acid groups) between 0 and 55 mg KOH/g solid resin, a number-average molecular weight Mn of at least 5000 g/mol and a weight average molecular weight Mw of at least 30,000 g/mol, a glass transition temperature of at least 20° C. and an average particle diameter of no greater than 300 nm, which is prepared in the presence of 0.1 to 10.0 wt. %, relative to the sum of the solids contents of polymer polyol and polyisocyanate, of a non-ionic polyether surfactant and a polyisocyanate having a viscosity at 23° C. of no more than 12,000 mPa*s and either a non-hydrophilic or a non-ionically or anionically hydrophilic character, whereby the equivalent ratio of isocyanate groups of component b) to hydroxyl groups of component a) is 0.2:1 to 5:1; a process for the preparation of such aqueous 2-component coating compositions, and their use as 2-component PU paints for painting any type of substrate.
Inventors:
Joachim Probst
Erhard Ruhmann
Horst Clemens
Wolfgang Kremer
Jürgen Mikesner
Hans-Joseph Lars
Erhard Ruhmann
Horst Clemens
Wolfgang Kremer
Jürgen Mikesner
Hans-Joseph Lars
Application Number:
JP2002525255A
Publication Date:
September 09, 2004
Filing Date:
August 22, 2001
Export Citation:
Assignee:
Bayer Aktiengesellschaft
International Classes:
B01D47/00; B08B3/02; B44D3/16; C08G18/40; C08G18/62; C08G18/70; C09D5/00; C09D153/00; C09D171/00; C09D175/04; C09D175/14; E04G23/00; (IPC1-7): C09D175/14; C08G18/62; C09D5/00; C09D153/00; C09D171/00
Domestic Patent References:
| JP2000191979A | 2000-07-11 | |||
| JPH09316392A | 1997-12-09 |
Attorney, Agent or Firm:
Aoyama Aoi
Osamu Kawamiya
Yasuo Shibata
Osamu Kawamiya
Yasuo Shibata