公开(公告)号：US20180030311A1

公开(公告)日：2018-02-01

申请号：US15220081

申请日：2016-07-26

申请人： BASF Coatings GmbH

发明人： Timothy S. DECEMBER ,  Timothy CLARK ,  Adam M. OZVALD

IPC分类号： C09D187/00 ,  C09D133/08

CPC分类号： C09D187/005 ,  B05D1/36 ,  B05D3/0254 ,  B05D7/14 ,  B05D7/534 ,  B05D2202/25 ,  B05D2400/00 ,  B05D2425/01 ,  B05D2425/02 ,  B05D2451/00 ,  B05D2503/00 ,  B05D2508/00 ,  C08K3/04 ,  C08K5/34922 ,  C08K7/18 ,  C09D5/00 ,  C09D133/08 ,  B05D2401/20 ,  B05D2401/10

摘要： Shelf-stable low temperature cure coating compositions that include a hydroxy-functional resin, a crosslinking agent, and a catalyst that does not catalyze the crosslinking reaction between hydroxy-functional resin and the crosslinking agent contained therein, but instead between a hydroxy-functional resin and a crosslinking agent contained in a different low temperature cure coating composition. In addition, low temperature cure composite coatings that include: a waterborne basecoat containing a first hydroxy-functional resin, a first crosslinking agent, a first catalyst, and an organic solvent; and a solventborne topcoat containing a second hydroxy-functional resin, a second crosslinking agent, a second catalyst, and water, where the first catalyst migrates into the topcoat from the basecoat and catalyzes the reaction between the second hydroxy-functional resin and crosslinking agent, and the second catalyst migrates into the basecoat from the topcoat and catalyzes the reaction between the first hydroxy-functional resin and crosslinking agent.

公开(公告)号：US20190031910A1

公开(公告)日：2019-01-31

申请号：US15660454

申请日：2017-07-26

申请人： BASF COATINGS GmbH

发明人： Timothy S. DECEMBER ,  Timothy CLARK ,  Adam M. OZVALD ,  Donald H. CAMPBELL

IPC分类号： C09D175/06 ,  C09D7/12 ,  C09D183/16 ,  B05D7/00

摘要： A double coating, curing method, cured coating, and kit are provided. A first layer of the double coating can be a first cure coating composition, which has a first hydroxy-functional resin, a first crosslinking agent, and a first catalyst. A second layer of a second cure coating composition can have a low hydrophilicity acrylic resin as a second hydroxy-functional resin, a second crosslinking agent, and a second catalyst. The first catalyst catalyzes crosslinking between the second hydroxy-functional resin and crosslinking agent, and not between the first hydroxy-functional resin and crosslinking agent. The second catalyst catalyzes crosslinking between the first hydroxy-functional resin and crosslinking agent, and not between the second hydroxy-functional resin and crosslinking agent. The first and/or second hydroxy functional resins can facilitate catalyst migration from one layer to the other. The separate compositions can be shelf-stable and/or the curing can occur at low temperature.