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1. 发明申请

WO2023079078A1 WATER BASED COATING COMPOSITION FOR WIND BLADES 审中-公开
公开(公告)号：WO2023079078A1
公开(公告)日：2023-05-11
申请号：PCT/EP2022/080822
申请日：2022-11-04
申请人： HEMPEL A/S
发明人： BERNAD, Pablo Luis , JUNG, Christina , WOOD, Craig E.
IPC分类号： C08G18/08 , C08G18/44 , C08G18/73
摘要： The present invention relates to a water based coating composition for wind blades, in particular for erosion protection of wind blades. The invention also relates to the use of a water based coating composition for coating a wind blade, preferably for providing an erosion protection topcoat on said wind blade. The invention also relates to a wind blade coated with a coating composition according to the invention and to a method for protecting a wind blade against erosion by application of a coating composition according to the invention on said wind blade and to a method for repairing and/or replacing the existing coating layer on a wind blade by application of a coating composition according to the invention. The coating composition comprises a) a primary composition comprising one or more aqueous dispersion of an aliphatic polyurethane, such as one or more aqueous dispersion of an aliphatic polyurethane based on polyester diols; and/or one or more aqueous dispersion of an aliphatic polyurethane based on polycarbonate diols; and optionally b) a secondary composition comprising one or more polyisocyanates; wherein, when the coating composition comprises b) then said one or more aqueous dispersion in a) is present in an amount of at least times the amount of said one or more polyisocyanate in b) based on weight; when b) is absent then the coating composition is a one-component composition. Preferably, said aqueous dispersion has a particle size characterized by a D50 (median) value below 1000 nm.

2. 发明公开

EP4242247A3 USE OF COATING COMPOSITIONS FOR WIND TURBINE BLADES 审中-实审
公开(公告)号：EP4242247A3
公开(公告)日：2023-11-22
申请号：EP23176949.8
申请日：2020-06-26
申请人： Hempel A/S
发明人： BERNAD, Pablo Luis , KALLESØE, Erik , MEHROTRA, Kushagra
IPC分类号： C09D5/00 , C08G18/72 , C09D175/12 , C08G18/10 , C08G18/38 , C08G18/79
摘要： The present invention relates to coating compositions for wind turbine blades. The compositions are particularly useful as topcoats for wind blades and for Leading Edge Protection (LEP). The invention also relates to a wind blade coated with a coating composition of the invention and to a method for application of the coating composition and to a method for repairing and/or replacing the existing coating layer on a wind blade by application of a coating composition of the invention. The invention also relates to a kit of parts comprising the base composition and the curing agent used in the coating composition.
The coating composition used for coating a wind blade comprises a base composition comprising a polyetheraspartic ester having the formula (I) below

wherein each R represents a linear or branched C 1 -C 10 alkyl residue, such as a linear or branched C 1 -C 6 alkyl residue, such as for example a methyl, ethyl, propyl or butyl residue; and wherein X is a polyether. The coating composition further comprises a curing agent.

3. 发明公开

EP4242247A2 USE OF COATING COMPOSITIONS FOR WIND TURBINE BLADES 审中-实审
公开(公告)号：EP4242247A2
公开(公告)日：2023-09-13
申请号：EP23176949.8
申请日：2020-06-26
申请人： Hempel A/S
发明人： BERNAD, Pablo Luis , KALLESØE, Erik , MEHROTRA, Kushagra
IPC分类号： C08G18/79
摘要： The present invention relates to coating compositions for wind turbine blades. The compositions are particularly useful as topcoats for wind blades and for Leading Edge Protection (LEP). The invention also relates to a wind blade coated with a coating composition of the invention and to a method for application of the coating composition and to a method for repairing and/or replacing the existing coating layer on a wind blade by application of a coating composition of the invention. The invention also relates to a kit of parts comprising the base composition and the curing agent used in the coating composition.
The coating composition used for coating a wind blade comprises a base composition comprising a polyetheraspartic ester having the formula (I) below

wherein each R represents a linear or branched C 1 -C 10 alkyl residue, such as a linear or branched C 1 -C 6 alkyl residue, such as for example a methyl, ethyl, propyl or butyl residue; and wherein X is a polyether. The coating composition further comprises a curing agent.

4. 发明公开

EP3990553A1 USE OF COATING COMPOSITIONS FOR WIND TURBINE BLADES 有权
公开(公告)号：EP3990553A1
公开(公告)日：2022-05-04
申请号：EP20734547.1
申请日：2020-06-26
申请人： Hempel A/S
发明人： BERNAD, Pablo Luis , KALLESØE, Erik , MEHROTRA, Kushagra
IPC分类号： C09D5/00 , C08G18/48 , C08G18/72 , C09D175/12

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