Invention Grant
- Patent Title: Carboxy-functional, polyether-based reaction products and aqueous basecoat materials comprising the reaction products
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Application No.: US16060482Application Date: 2016-11-30
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Publication No.: US10889090B2Publication Date: 2021-01-12
- Inventor: Bernhard Steinmetz , Peter Hoffmann , Hardy Reuter
- Applicant: BASF Coatings GmbH
- Applicant Address: DE Muenster
- Assignee: BASF Coatings GmbH
- Current Assignee: BASF Coatings GmbH
- Current Assignee Address: DE Muenster
- Agency: Obion, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP15198679 20151209
- International Application: PCT/EP2016/079192 WO 20161130
- International Announcement: WO2017/097642 WO 20170615
- Main IPC: C08G63/668
- IPC: C08G63/668 ; C09D167/00 ; B32B27/00 ; C09D151/08
Abstract:
The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group
with
(b) at least one polyether of the general structural formula (I) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.
with
(b) at least one polyether of the general structural formula (I) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.
Public/Granted literature
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