公开(公告)号：US20220282119A1

公开(公告)日：2022-09-08

申请号：US17637495

申请日：2020-08-24

Applicant: BASF Coatings GmbH

Inventor： Friederike MITTAG ,  Dominik VOLLMANN ,  Peter HOFFMANN ,  Emre LEVENT ,  Katharina FECHTNER ,  Manuela NIEMEIER

IPC: C09D181/02 ,  C08G75/045 ,  C09D5/00 ,  C09D5/36 ,  B05D7/00 ,  B05D5/06

Abstract: Described herein are a curable coating composition including at least one Michael donor (A) having at least one thiol group, at least one Michael acceptor (B) and at least one specific catalyst (C), a method of using the curable coating composition as a clear coating in a process to prepare a multilayer coating and a multilayer coating obtained from said process. Also described herein is a kit-of-parts including at least two separate containers C1 and C2, where the specific catalyst (C) is contained in container C1 and/or C2. Finally, described herein is a method of using specific salts of carboxylic acids as catalyst in a reaction between a Michael donor (A) having at least one thiol group and a Michael acceptor (B).

公开(公告)号：US20220290002A1

公开(公告)日：2022-09-15

申请号：US17637548

申请日：2020-08-24

Applicant: BASF Coatings GmbH

Inventor： Friederike MITTAG ,  Dominik VOLLMANN ,  Katharina FECHTNER ,  Claas Henrik HOEVELMANN ,  Manuela NIEMEIER ,  Stefanie BOSHE-PLOIS ,  Peter HOFFMANN

IPC: C09D165/00 ,  C08G61/12 ,  C08F222/10 ,  C08K5/098 ,  B05D5/06 ,  B05D7/14 ,  B05D7/00

Abstract: Described herein is a curable coating composition including at least one Michael donor (A) having at least one acetoacetate group, at least one Michael acceptor (B) and at least one specific catalyst (C). Also described herein are a method of using the curable coating composition as a clear coating in a method to prepare a multilayer coating and a multilayer coating obtained from said process. Further described herein is a kit-of-parts including at least two separate containers C1 and C2, where the specific catalyst (C) and/or the at least one Michael acceptor (B) is contained in container C2. Additionally described herein is a method of using specific salts of carboxylic acids as catalyst in a reaction between a Michael donor (A) having at least one acetoacetate group and a Michael acceptor (B).

公开(公告)号：US20240294769A1

公开(公告)日：2024-09-05

申请号：US18560308

申请日：2022-06-02

Applicant: BASF COATINGS GMBH

Inventor： Andreas DOPP ,  Nicole Kathleen SWART ,  Katharina FECHTNER

IPC: C09D4/06 ,  C08F265/06 ,  C08F290/06 ,  C08G18/67 ,  C08G18/81 ,  C09D5/00 ,  C09D151/00 ,  C09D151/08

CPC classification number: C09D4/06 ,  C08F265/06 ,  C08F290/067 ,  C08G18/672 ,  C08G18/8175 ,  C09D5/002 ,  C09D151/003 ,  C09D151/08

Abstract: Disclosed herein are radiation curable coating compositions including a mixture of crosslinkable polymers or oligomers in combination with at least one hydrophobic unsaturated monomer and at least 20 wt. % of hydrophilic unsaturated monomers. The coating of various substrates, in particular plastic substrates, with these coating compositions results in significantly improved surface roughness without the formation of undesired film defects. The coating compositions can be overcoated with commonly known coating compositions to produce multilayer coatings having an improved adhesion, especially wet adhesion, and a high optical quality. Further disclosed herein are a method for forming a coating onto an object and a coated object prepared according to the method. Additionally disclosed herein is a method of using the radiation curable coating composition to improve the surface roughness of plastic substrates, in particular plastic substrates produced by additive manufacturing.