- 专利标题: POLYURETHANE-BASED COATINGS WITH HIGH SOLAR REFLECTANCE INDEX
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申请号: EP22305580.7申请日: 2022-04-20
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公开(公告)号: EP4265662A1公开(公告)日: 2023-10-25
- 发明人: CEDANO SERRANO, Francisco Javier , VARELAS, Konstantinos , HESSELBARTH, Frank Gerhart
- 申请人: Saint-Gobain Weber France
- 申请人地址: FR 94370 Sucy en Brie 2-4 Rue Marco Polo
- 代理机构: Saint-Gobain Recherche
- 主分类号: C08G18/08
- IPC分类号: C08G18/08 ; C08G18/10 ; C08G18/48 ; C08G18/76 ; C09D5/33 ; C09D175/08 ; E04D7/00 ; C08G18/83
摘要:
The present disclosure relates generally to polyurethane-based coatings with high solar reflectivity, for example, for use as a coating on a building surfaces. In one aspect the disclosure provides a solar reflective coating that comprises a functionalized anionic polyurethane present in an amount in the range of 20-80 wt% of the composition on a dry solids basis; a water-insoluble transition metal crosslinking agent present in an amount in the range of 0.5-30 wt% of the composition on a dry solids basis; and at least one of: a hydrophobic acrylic polymer present in an amount in the range of 20 wt% to 80 wt% on a dry solids basis, and a near-infrared reflective colored pigment present in an amount of at least 0.1 wt%, e.g., in the range of 0.2 wt% to 10 wt% on a dry solids basis.
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