Invention Grant
- Patent Title: Two-component polyurethane topcoat
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Application No.: US16162830Application Date: 2017-04-17
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Publication No.: US10745584B2Publication Date: 2020-08-18
- Inventor: Fan Yang , Zhai Zhou , Wanjun Xu
- Applicant: VALSPAR SOURCING, INC.
- Applicant Address: US MN Minneapolis
- Assignee: Valspar Sourcing, Inc.
- Current Assignee: Valspar Sourcing, Inc.
- Current Assignee Address: US MN Minneapolis
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@7106cf5b
- International Application: PCT/US2017/027935 WO 20170417
- International Announcement: WO2017/184511 WO 20171026
- Main IPC: C09D175/04
- IPC: C09D175/04 ; C09D7/47 ; C08G18/42 ; C09D7/65 ; C09D7/41 ; C08L33/04 ; C08L67/00 ; C08L83/04 ; C08G18/62 ; C08G18/40 ; C08G18/76

Abstract:
The present disclosure is directed to a two-component polyurethane topcoat, comprising: a) a film-forming resin composition comprising i) an active hydrogen-containing polymer, having a hydroxyl value of 70 mg KOH/g polymer or more; ii) a polyester resin, having a hydroxyl value of less than 50 mg KOH/g resin and a viscosity of less than 6000 mPa·s at 25° C.; and iii) a package of flatting agents comprising a polysiloxane containing an effective silicon content of 30 wt % or more and an acrylics polymer having a weight average molecular weight in the range of 6,000 to 20,000 g/mol, wherein the weight ratio of the polysiloxane to the acrylics polymer is in the range of 1:5 to 1:15; and b) a polyisocyanate curing agent, wherein the ratio by weight of the component a) to the component b) is in the range of 100:10 to 100:25.
Public/Granted literature
- US20190161639A1 TWO-COMPONENT POLYURETHANE TOPCOAT Public/Granted day:2019-05-30
Information query
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