公开(公告)号：US09777188B2

公开(公告)日：2017-10-03

申请号：US14766553

申请日：2014-02-07

申请人： BASF Coatings GmbH

发明人： Audrée Andersen ,  Markus Saedler ,  Fatmir Raka ,  Nicole Freitag ,  Britta Schnieders ,  Alexandra Steffens ,  Cathrin Corten ,  Frederik Fölling

IPC分类号： B32B27/06 ,  C09D167/02 ,  C09D5/02 ,  C09D7/12 ,  B05D7/00 ,  B05D3/02 ,  C08L75/04

CPC分类号： C09D167/02 ,  B05D3/0272 ,  B05D7/532 ,  B05D7/534 ,  C08L75/04 ,  C09D5/02 ,  C09D7/63

摘要： Pigmented aqueous basecoat material comprises at least one alpha, omega-hydroxy-functionalized oligoester having an OH number of 25 to 95 mg KOH/g, a theoretical carbon-carbon double bond content of 0.5 to 2.5 mmol/g, a number-average molecular weight of 2500 to 6000 g/mol and a weight-average molecular weight of 15 000 to 30 000 g/mol, the alpha, omega-hydroxy-functionalized oligoester further comprising at least one partially or completely salified acid group, and the sum of the weight percentage fractions of all the alpha, omega-hydroxy-functionalized oligoesters being 0.5 to 10 wt %, based on the total solids fraction of the pigmented aqueous basecoat material. Also provided are a multicoat paint system, a method of producing a multicoat paint system, and use of the above-identified alpha, omega-hydroxy-functionalized oligoester in pigmented aqueous basecoat materials for the purpose of improving adhesion.

公开(公告)号：US09777169B2

公开(公告)日：2017-10-03

申请号：US14766554

申请日：2014-02-07

申请人： BASF Coatings GmbH

发明人： Audrée Andersen ,  Cathrin Corten ,  Markus Saedler ,  Fatmir Raka ,  Frederik Fölling ,  Nicole Freitag ,  Stefanie Boshe-Plois ,  Alexandra Steffens

IPC分类号： B32B27/06 ,  C09D7/12 ,  C09D5/00 ,  B05D7/00 ,  C08K5/11

CPC分类号： C09D7/63 ,  B05D7/534 ,  C08K5/11 ,  C09D5/00 ,  Y10T428/31786

摘要： Solventborne filler comprises at least one alpha,omega-hydroxy-functionalized oligoester which possesses an OH number of 30 to 160 mg KOH/g, a theoretical carbon-carbon double bond content of 1 to 3 mmol/g, a number-average molecular weight of 1000 to 3000 g/mol and a weight-average molecular weight of 2800 to 10 000 g/mol, moreover, the sum of the weight percentage fractions of all the alpha,omega-hydroxy-functionalized oligoesters being 0.5 to 10 wt. %, based on the total amount of the solventborne filler. Also provided are a multicoat paint system, a process for producing a multicoat paint system, and use of the above-designated alpha,omega-hydroxy-functionalized oligoester in solventborne fillers for improving adhesion.