Invention Grant
- Patent Title: One-component aqueous coating compositions containing polyurethane and phyllosilicates for oxygen barrier coatings
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Application No.: US16075088Application Date: 2017-01-25
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Publication No.: US11136463B2Publication Date: 2021-10-05
- Inventor: Ines Pietsch , Konrad Roschmann , Christine Tonhauser , Kristina Georgieva , Josef Breu , Patrick Feicht
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen am Rein
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen am Rein
- Agency: Faegre Drinker Biddle & Reath LLP
- Priority: EP16153999 20160203,EP16162613 20160329
- International Application: PCT/EP2017/051477 WO 20170125
- International Announcement: WO2017/133935 WO 20170810
- Main IPC: C09D5/00
- IPC: C09D5/00 ; C09D7/61 ; C09D7/40 ; C08G18/44 ; C08G18/48 ; C08G18/56 ; C08G18/72 ; C08G18/75 ; C08G18/76 ; C08K3/36 ; C08K5/17 ; C09D175/06 ; C09D175/08 ; C09D175/14 ; C08J7/043 ; C08J7/048 ; C08J7/056 ; C08L75/04 ; C09D175/04 ; C08K3/34

Abstract:
Described is an aqueous one-component coating composition comprising dispersed polyurethane and phyllosilicate. The polyurethane carries acid groups which are at least partially neutralized with a hydrophilic base selected from inorganic bases and organic mono-amines. The hydrophilic base has a water solubility at 20° C. of at least 150 g/l, preferably of at least 200 g/l. The composition can be used for providing oxygen barrier properties to a polymer film.
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