Invention Grant
- Patent Title: Powder coating compositions capable of having a substantially non-zinc containing primer
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Application No.: US13387431Application Date: 2010-07-27
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Publication No.: US10011736B2Publication Date: 2018-07-03
- Inventor: Chad Lucas
- Applicant: Chad Lucas
- Applicant Address: NL Arnhem
- Assignee: Akzo Nobel Coatings International B.V.
- Current Assignee: Akzo Nobel Coatings International B.V.
- Current Assignee Address: NL Arnhem
- Agency: McDonnell Boehnen Hulbert & Berghoff LLP
- Agent Nirav P. Patel
- Priority: EP09169332 20090903
- International Application: PCT/EP2010/060907 WO 20100727
- International Announcement: WO2011/012627 WO 20110203
- Main IPC: C09D5/03
- IPC: C09D5/03 ; C09D163/00 ; C09D163/02 ; C09D5/10 ; C09D161/10 ; C09D167/00 ; C09D5/00 ; C08K3/34 ; C08K3/40 ; C08K3/04 ; B32B15/092 ; C08L63/00 ; C08L67/00 ; C23C26/00 ; C08G59/62 ; C09D7/62 ; C09D7/40
Abstract:
Corrosion and chip-resistant coatings for high tensile steel components, such as automotive coil springs, can be formed from a coating composition comprising a primer having an epoxy resin with the proviso that the epoxy resin does not have an EEW of about 860 to about 930, a polyhydroxyl functional phenolic curing agent having a HEW of about 200 to about 500, and a platy filler. The primer contains less than 20 wt % zinc. The topcoat includes an epoxy resin having an epoxy equivalent weight of about 450 to about 1400, an elastomer-modified epoxy resin having an epoxy equivalent weight of about 1000 to about 1600, a foaming agent and a reinforcing fiber.
Public/Granted literature
- US20120258316A1 POWDER COATING COMPOSITIONS CAPABLE OF HAVING A SUBSTANTIALLY NON-ZINC CONTAINING PRIMER Public/Granted day:2012-10-11
Information query
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