公开(公告)号：US10745584B2

公开(公告)日：2020-08-18

申请号：US16162830

申请日：2017-04-17

Applicant: VALSPAR SOURCING, INC.

Inventor： Fan Yang ,  Zhai Zhou ,  Wanjun Xu

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.

公开(公告)号：US20190161639A1

公开(公告)日：2019-05-30

申请号：US16162830

申请日：2017-04-17

Applicant: VALSPAR SOURCING, INC.

Inventor： Fan Yang ,  Zhai Zhou ,  Wanjun Xu

IPC: C09D175/04 ,  C09D7/47 ,  C09D7/41 ,  C09D7/65

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.